2011 Mercedes-benz CL Class Owners Manual

sure that the display messages do not appear in the multifunction display.

If these conditions are met, the front-passenger seat can be occupied again. Whether the 42 indicator lamp remains lit or goes out depends on how OCS classifies the occupant. If the conditions are not met, the system is not operating correctly. X Visit a qualified specialist workshop immediately.

G Warning If the 42 indicator lamp remains lit with an adult occupant on the front-passenger seat even after performing the above corrective steps, do not have any passenger use the front- passenger seat until the system has been repaired.

350 Display messages

Brakes Display messages !÷ Currently Unavailable See Operator's Manual

Possible causes/consequences and M Solutions G Risk of accident ABS (Anti-lock Braking System), ESP® (Electronic Stability Program), BAS (Brake Assist), PRE-SAFE®, HOLD and hill start assist are temporarily unavailable. The self-diagnosis function might not be complete, for example. BAS PLUS (Brake Assist PLUS) and PRE-SAFE® Brake may be inoperative as well. In addition, the ÷, å and ! warning lamps light up in the instrument cluster. ATTENTION ASSIST is deactivated. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X On a suitable road, carefully drive the vehicle making slight

steering movements at a speed above 20 km/h. If the display message disappears, the functions mentioned above are available again.

If the display message continues to be displayed: X Drive on carefully. X Visit a qualified specialist workshop. G Risk of accident ABS, ESP®, BAS, PRE-SAFE®, HOLD and hill start assist are temporarily unavailable. The on-board voltage may be insufficient, for example. BAS PLUS and PRE-SAFE® Brake may also have failed. In addition, the ÷, å and ! warning lamps light up in the instrument cluster. ATTENTION ASSIST is deactivated. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Drive on carefully.

If the display message disappears, the functions mentioned above are available again.

If the display message continues to be displayed: X Drive on carefully. X Visit a qualified specialist workshop.

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Display messages !÷ Inoperative See Oper. Manual

T! ÷ Inoperative See Oper. Manual

Brake wear (USA only) (Canada only) Release parking brake

Possible causes/consequences and M Solutions G Risk of accident ABS, ESP®, BAS, PRE-SAFE®, HOLD and hill start assist are unavailable due to a malfunction. BAS PLUS and PRE-SAFE® Brake may also have failed. In addition, the ÷, å and ! warning lamps light up in the instrument cluster. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. ATTENTION ASSIST is deactivated. X Drive on carefully. X Visit a qualified specialist workshop immediately. G Risk of accident EBD (Electronic Brake force Distribution), ABS, ESP®, BAS, PRE- SAFE®, HOLD and hill start assist are unavailable due to a malfunction. BAS PLUS and PRE-SAFE® Brake may also have failed. In addition, the ÷, å and ! warning lamps in the instrument cluster light up and a warning tone sounds. ATTENTION ASSIST is deactivated. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Drive on carefully. X Visit a qualified specialist workshop immediately. The brake pads/linings have reached their wear limit. X Visit a qualified specialist workshop.

The red F (USA only)/ ! (Canada only) indicator lamp flashes and a warning tone sounds. You are driving with the electric parking brake applied. X Release the electric parking brake. or X Pull away carefully (Y page 285). The red F (USA only)/ ! (Canada only) indicator lamp flashes and a warning tone sounds. You are performing an emergency stop using the electric parking brake (Y page 285). X After the emergency stop: release the electric parking brake

lever.

352 Display messages

Display messages

(USA only) (Canada only) Parking brake See Operator's Manual

Possible causes/consequences and M Solutions The red F (USA only)/ ! (Canada only) indicator lamp flashes, the yellow F (USA only)/ ! (Canada only) warning lamp illuminates and a warning tone sounds. The electric parking brake is malfunctioning and the braking effect is restricted. While the vehicle is in motion: X Release the electric parking brake lever. While the vehicle is stationary: X Switch off the ignition and turn it back on. X Release the electric parking brake manually. If the display message continues to be displayed: X Shift the transmission to P. X Use the folding wheel chock (Y page 422) from the vehicle tool

kit to secure the vehicle against rolling away.

X Consult a qualified specialist workshop. The yellow F (USA only)/ ! (Canada only) warning lamp lights up. Additionally, the red F (USA only)/ ! (Canada only) indicator lamp may light up. The electric parking brake is malfunctioning. To release: X Pull the electric parking brake lever. or X Pull away carefully. X Visit a qualified specialist workshop. To apply: X Switch off the ignition. X Pull the electric parking brake lever for at least ten seconds,

until the display message disappears.

If the display message continues to be displayed: X Shift the transmission to P. X Use the folding wheel chock (Y page 422) from the vehicle tool

kit to secure the vehicle against rolling away.

X Consult a qualified specialist workshop.

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Display messages

Possible causes/consequences and M Solutions The yellow F (USA only)/ ! (Canada only) warning lamp flashes. The power supply for the electric parking brake was interrupted. X Pull the electric parking brake lever. or X Pull away carefully. or X Pull the electric parking brake lever until the display message

disappears.

The red F (USA only)/ ! (Canada only) indicator lamp flashes and the yellow F (USA only)/ ! (Canada only) warning lamp lights up. The electric parking brake is malfunctioning. X Switch off the ignition and turn it back on. X Apply or release the electric parking brake. or X Pull away carefully. X Visit a qualified specialist workshop. The yellow F (USA only)/ ! (Canada only) warning lamp lights up. The red F (USA only)/ ! (Canada only) indicator lamp flashes for approximately 10 seconds after the electric parking brake has been applied or released. It then goes out or remains lit. The electric parking brake is malfunctioning, e.g. because of over or undervoltage. X Pull away carefully. X Visit a qualified specialist workshop. In the event of over or undervoltage: X Remove the cause for the over or undervoltage, e.g. by charging

the battery or restarting the engine.

X Switch the ignition off and on, and then apply or release the

electric parking brake.

If this does not release the electric parking brake: X Do not drive on. X Consult a qualified specialist workshop.

354 Display messages

Display messages

(USA only) (Canada only) Pkg Brake Inoperative

(USA only) (Canada only) Turn On the Ignition to Release the Parking Brake

Possible causes/consequences and M Solutions The yellow F (USA only)/ ! (Canada only) warning lamp lights up. The red F (USA only)/ ! (Canada only) indicator lamp flashes for approximately 10 seconds after the electric parking brake has been applied or released. It then goes out or remains lit. The electric parking brake has overheated. X Allow the vehicle to cool down. Do not apply or release the

electric parking brake during this time.

X Use the folding wheel chock (Y page 422) from the vehicle tool

kit to secure the vehicle against rolling away.

X When the vehicle has cooled down: switch the ignition off and

on again, then apply or release the electric parking brake.

The yellow F (USA only)/ ! (Canada only) warning lamp lights up. The red F (USA only)/ ! (Canada only) indicator lamp flashes for approximately 10 seconds after application or release F (USA only)/ ! (Canada only). It then goes out or remains lit. The electric parking brake is malfunctioning. X Switch the ignition off and on, and then apply the electric

parking brake.

If it is not possible to apply the electric parking brake: X Shift the transmission to P. X Use the folding wheel chock (Y page 422) from the vehicle tool

kit to secure the vehicle against rolling away.

X Consult a qualified specialist workshop. The red F (USA only)/ ! (Canada only) indicator lamp lights up. You have attempted to release the electric parking brake with the ignition switched off. X Key: turn the key to position 1 in the ignition lock. X KEYLESS-GO: switch on the ignition.

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Display messages (USA only) (Canada only) Service See Oper. Manual (USA only) (Canada only) Check Brake Fluid Level

Possible causes/consequences and M Solutions There is a malfunction in the system. The brake system continues to operate normally. X Drive on carefully. X Visit a qualified specialist workshop.

G Risk of accident There is insufficient brake fluid in the brake fluid reservoir. Additionally, the red $ (USA only)/ J (Canada only) warning lamp lights up in the instrument cluster and a warning tone sounds. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances. X Apply the parking brake. X Consult a qualified specialist workshop. X Do not add brake fluid. This will not rectify the malfunction.

G Warning Driving with the message Check Brake Fluid Level displayed can result in an accident. Have your brake system checked immediately. Do not add brake fluid before checking the brake system. Overfilling the brake fluid reservoir can result in spilling brake fluid on hot engine parts and the brake fluid catching fire. You can be seriously burned.

Lights i Display messages about LEDs:

This display message will only appear if all LEDs have failed.

356 Display messages

Display messages Check Left Cornering Light orCheck Left Cornering Light Check Left Low Beam orCheck Right Low Beam Check Rear Left Turn Signal orCheck Rear Right Turn Signal Check Front Left Turn Signal orCheck Front Right Turn Signal Check Left Mirror Turn Signal orCheck Right Mirror Turn Signal Check Center Brake Lamp

Possible causes/consequences and M Solutions The left or right-hand cornering light is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

The left or right-hand low-beam headlamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop. The rear left-hand or rear right-hand turn signal is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

The front left-hand or front right-hand turn signal is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

The turn signal in the left-hand and/or right-hand exterior mirror is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop. The high-mounted brake lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

Display messages Check Left Tail and Brake Lamp orCheck Right Tail and Brake Lamp Check Left High Beam orCheck Right High Beam Check Left License Plate Lamp orCheck Right License Plate Lamp Check Left Fog Lamp orCheck Right Fog Lamp Check Rear Left Fog Lamp orCheck Rear Right Fog Lamp Check Front Left Parking Lamp orCheck Front Right Parking Lamp

Display messages

357

Possible causes/consequences and M Solutions The left or right-hand tail lamp/brake lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

The left or right-hand high beam is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

The left or right-hand license plate lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

The left-hand or right-hand front fog lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop. The left-hand or right-hand rear fog lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

The front left or front right standing lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

358 Display messages

Display messages Check Left Reverse Lamp orCheck Right Reverse Lamp Check Front Left Sidemarker Lamp orCheck Front Right Sidemarker Lamp Check Rear Left Sidemarker Lamp orCheck Rear Right Sidemarker Lamp Check Left Daytime Running Light orCheck Right Daytime Running Light Active Headlamps Inoperative Malfunction See Oper. Manual

Possible causes/consequences and M Solutions The left or right-hand backup lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

The left or right front side marker lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

The rear left or right side marker lamp is faulty. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

The left or right-hand daytime running lamp is defective. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

The active light function is faulty. X Visit a qualified specialist workshop.

The exterior lighting is faulty. X Visit a qualified specialist workshop.

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359

Display messages AUTO Lamp Function Inoperative

Please Switch Off Lights

Adaptive High-beam Assist Inoperative

Engine Display messages Check Coolant Level See Oper. Manual

Possible causes/consequences and M Solutions The light sensor is faulty. X Visit a qualified specialist workshop. USA only: X Switch off the daytime running lamps in the on-board computer

(Y page 341).

X Switch the lights on and off using the light switch. The lights are still switched on when you leave the vehicle. A warning tone also sounds. X Turn the light switch to $ or c. or X If the rear fog lamp is switched on: press the light switch in to

the stop.

Adaptive Highbeam Assist is faulty. X Visit a qualified specialist workshop.

Possible causes/consequences and M Solutions The coolant level is too low. X Add coolant, observing the warning notes when doing so

(Y page 407).

X If coolant needs adding more often than usual, have the engine

coolant system checked at a qualified specialist workshop.

G Warning Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn if it comes into contact with hot engine parts. You could be seriously burned.

! The coolant level is too low. Avoid making long journeys with too little coolant in the cooling

system. The engine will otherwise be damaged. The display messages and the corresponding symbol that indicate that the coolant level is too low must not be ignored.

360 Display messages

Display messages Coolant Low Stop Vehicle Turn Engine Off

Possible causes/consequences and M Solutions The coolant is too hot. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Make sure that the air supply to the radiator is not blocked, e.g.

by snow, slush or ice.

X Wait until the display message disappears before restarting the

engine. There is otherwise a risk of engine damage.

X Pay attention to the coolant temperature display. X If the temperature increases again, visit a qualified specialist

workshop immediately.

The poly-V-belt may have torn. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Open the hood. X Check whether the poly-V-belt is torn. If the poly-V-belt is torn: ! Do not continue driving. The engine could otherwise overheat. X Consult a qualified specialist workshop. If the poly-V-belt is OK: X Wait until the display message disappears before restarting the

engine. There is otherwise a risk of engine damage.

X Pay attention to the coolant temperature display. X Visit a qualified specialist workshop.

G Warning Driving when your engine is overheated can cause some fluids which may have leaked into the engine compartment to catch fire. You could be seriously burned. Steam from an overheated engine can cause serious burns which can occur just by opening the engine hood. Stay away from the engine if you see or hear steam coming from it. Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the vehicle and do not stand near the vehicle until the engine has cooled down.

! If the coolant temperature exceeds 248 ‡(120 †) do not continue driving. The engine will

otherwise be damaged.

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361

Display messages ? The engine fan is faulty.

Possible causes/consequences and M Solutions

X At coolant temperatures below 248 ‡ (120 †), continue driving

to the next qualified specialist workshop.

X Avoid subjecting the engine to heavy loads, e.g. driving in

mountainous terrain, and stop-start driving.

# The battery is not being charged.

Possible causes are: Ra faulty alternator Ra torn poly-V-belt Ra malfunction in the electronics X Pull over and stop the vehicle safely and switch off the engine,

paying attention to road and traffic conditions.

X Open the hood. X Check whether the poly-V-belt is torn. If the poly-V-belt is torn: ! Do not continue driving. The engine could otherwise overheat. X Consult a qualified specialist workshop. If the poly-V-belt is OK: X Visit a qualified specialist workshop. Vehicles with oil dipstick: the oil level has dropped to a critical level. X Check the oil level (Y page 405). X If necessary, add the engine oil (Y page 406). X Have the engine checked for leaks if engine oil has to be added

more often than usual.

Vehicles without an oil dipstick: the engine oil level is too low. X Check the oil level (Y page 405). X If necessary, add the engine oil (Y page 405). X Have the engine checked for leaks if engine oil has to be added

more often than usual.

Check Engine Oil at Next Refueling

Check Engine Oil Level(Add 1 quart) (USA only) Check Engine Oil Level(Add 1 Liter) (Canada only)

Information on approved engine oils can be obtained from any qualified specialist workshop or on the Internet at http://www.mbusa.com (USA only). ! The oil level is too low. Avoid long journeys with too little engine oil. There is a risk of

engine damage.

362 Display messages

The display messages and the corresponding symbol that indicate that the oil level is too low must not be ignored. Display messages Engine Oil Level Low Stop Vehicle Turn Engine Off

Possible causes/consequences and M Solutions Vehicles without an oil dipstick: the engine oil level is too low. There is a risk of engine damage. X Pull over and stop the vehicle safely and switch off the engine,

paying attention to road and traffic conditions.

X Apply the parking brake. X Add the engine oil (Y page 406) and check the oil level

(Y page 405).

Engine Oil Level Too High

Vehicles without an oil dipstick: you have added too much engine oil. There is a risk of damage to the engine or to the catalytic converter. X Have the excess oil siphoned off at a qualified specialist

workshop. Observe the legal requirements.

Vehicles without an oil dipstick: the measuring system is faulty. X Visit a qualified specialist workshop.

Engine Oil Level Cannot Be Measured C There is only a small amount of fuel in the fuel tank.

Reserve Fuel Gas Cap Loose

X Refuel at the nearest gas station. The fuel level has dropped into the reserve range. X Refuel at the nearest gas station.

The fuel system pressure is too low. The fuel filler cap is not closed correctly or the fuel system is leaking. X Check that the fuel filler cap is correctly closed. X If the fuel filler cap is not correctly closed: close the fuel filler

X If the fuel filler cap is closed: visit a qualified specialist

cap.

workshop.

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363

Driving systems Display messages À Attention Assist: Drowsiness detected

À Attention Assist Inoperative Á Night View Assist Inoperative Á Night View Assist Currently Unavailable

Á Night View Assist Lights Must Be Set to AUTO or ON Á Night View Assist Not in Reverse Gear Á Night View Assist Lights ON or AUTO, Not in R Gear

Possible causes/consequences and M Solutions Based on certain criteria, ATTENTION ASSIST has detected fatigue or a lack of concentration on the part of the driver. A warning tone also sounds. X If necessary, take a break. During long journeys, take regular breaks in good time so you get enough rest. ATTENTION ASSIST is inoperative. X Visit a qualified specialist workshop.

Night View Assist Plus is faulty. X Visit a qualified specialist workshop.

The temperature of the camera is too high. X Wait until you see the Night View Assist Available Again display message. You can also: X Fold the camera cover down (Y page 415). X Adjust the air distribution of the automatic air conditioning

upwards.

A condition for activating Night View Assist Plus has not been met. X Turn the light switch to c or L.

A condition for activating Night View Assist Plus has not been met. X Shift the transmission to P, N or D.

A condition for activating Night View Assist Plus has not been met. X Turn the light switch to c or L. X Shift the transmission to P, N or D.

364 Display messages

Display messages Á Night View Assist Only When It Is Dark ¨ Vehicle Rising ¨ Vehicle Rising Please Wait Briefly

¨ STOP Car Too Low

¨ Malfunction

Possible causes/consequences and M Solutions You have attempted to activate Night View Assist Plus in the daytime. Night View Assist Plus can only be activated when it is dark.

Your vehicle is adjusting to the level you have selected.

The vehicle level is too low when the vehicle is stationary. A warning tone also sounds. X Do not pull away.

The vehicle level is set when the display message disappears.

You have pulled away while the vehicle level is still too low. AIRMATIC sets the vehicle to the selected level after a short period. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Engage the parking brake. X Wait until the display message disappears before pulling away. G Risk of accident AIRMATIC is faulty. A warning tone also sounds. X Do not drive faster than 50 mph (80 km/h). X Make only slight steering movements. The front fender or the tires could be damaged if the steering movement is too large.

X Listen for scraping sounds. X Pull over and stop the vehicle safely, paying attention to road

and traffic conditions, and select a higher vehicle level. The vehicle may be raised, depending on the type of malfunction.

X Visit a qualified specialist workshop. G Risk of accident The AIRMATIC function is restricted. The vehicle's handling characteristics may be affected. X Do not drive faster than 50 mph (80 km/h). X Visit a qualified specialist workshop.

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365

Display messages ABC Malfunction Stop Vehicle

Possible causes/consequences and M Solutions X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions. After a few seconds, the vehicle level is adjusted and the display message disappears.

The vehicle is leaking oil. The display message is shown continuously. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances.

X Consult a qualified specialist workshop or breakdown service. The display message is shown continuously. ABC is malfunctioning. X Do not drive faster than 50 mph (80 km/h). X Make only slight steering movements. The front fender or the tires could be damaged if the steering movement is too large.

X Listen for scraping sounds. X Visit a qualified specialist workshop. The ABC vehicle level is too low when the vehicle is stationary. X Do not pull away.

The vehicle level is set when the display message disappears.

The ABC function is restricted. The vehicle's handling characteristics may be affected. X Do not drive faster than 50 mph (80 km/h). X Visit a qualified specialist workshop. The HOLD function is deactivated. The vehicle is skidding or a condition for activation is no longer met when the brake pedal is firmly depressed. A warning tone also sounds. X Reactivate the HOLD function later. The radar sensor system is deactivated. X Check whether or not the radar sensor system may be activated

(Y page 342).

X Switch on the radar sensor system (Y page 342).

ABC Vehicle Rising Please Wait Briefly ABC Malfunction

HOLD Off

Radar Sensors Deactivated See Oper. Manual

366 Display messages

Display messages Active Lane Keeping Assist Currently Unavailable See Oper. Manual

Active Lane Keeping Assist Inoperative Active Blind Spot Assist Currently Unavailable See Oper. Manual

Possible causes/consequences and M Solutions Active Lane Keeping Assist is deactivated and temporarily inoperative if: Rthe windshield is dirty in the camera’s field of vision. Rvisibility is impaired due to heavy rain, snow or fog. Rthere are no lane markings for a longer period. Rthe lane markings are worn, dark or covered, for example by dirt

or snow.

Active Lane Keeping Assist is operational again and the display message disappears if: Rthe dirt (e.g. slush) drops away while the vehicle is in motion. Rthe system detects that the camera is fully operational again. If the display message continues to be displayed: X Clean the windshield. Active Lane Keeping Assist is faulty. X Visit a qualified specialist workshop.

Active Blind Spot Assist is temporarily inoperative if: Rthe sensors are dirty. Rits function is impaired due to heavy rain or snow. Rthe radar sensor system is outside the operating temperature

range.

Rthe radar sensor system is temporarily inoperative, e.g. due to

electromagnetic radiation emitted by nearby TV or radio stations or other sources of electromagnetic radiation.

The yellow 9 indicator lamps also light up in the exterior mirrors. Active Blind Spot Assist is operational again and the display message disappears if: Rthe dirt (e.g. slush) drops away while the vehicle is in motion. Rthe system detects that the sensors are fully available again. Rthe radar sensor system is back within the operating

temperature range.

If the display message continues to be displayed: X Clean the sensors (Y page 414). X Restart the engine.

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367

Display messages Active Blind Spot Assist Inoperative Inoperative

Parking Guidance Inoperative

Parking Guidance Canceled

Parking Guidance Finished DISTRONIC PLUS Off DISTRONIC PLUS Available Again

Possible causes/consequences and M Solutions Active Blind Spot Assist is faulty. The yellow 9 indicator lamps also light up in the exterior mirrors. X Visit a qualified specialist workshop. Parking Guidance is faulty. X Restart the engine. If the display message continues to be displayed: X Visit a qualified specialist workshop. Parking Guidance is deactivated because: Rthe vehicle is skidding. Rthe sensors are dirty. Ra malfunction has occurred. X Reactivate Parking Guidance later. If the parking space symbol is not displayed in the multifunction display when you are driving at a speed of less than 19 mph (30 km/h): X Clean the sensors (Y page 414). X Restart the engine. If the parking space symbol is still not displayed in the multifunction display when you are driving at a speed of less than 19 mph (30 km/h): X Visit a qualified specialist workshop. Parking Guidance is deactivated because you have left the lane. X Park again and, while doing so, observe the display messages

in the multifunction display.

The vehicle is parked. A warning tone also sounds. The display message disappears automatically. DISTRONIC PLUS has been deactivated. If it was deactivated automatically, a warning tone also sounds (Y page 300). DISTRONIC PLUS is operational again after having been temporarily unavailable. You can now reactivate DISTRONIC PLUS (Y page 293).

368 Display messages

Display messages DISTRONIC PLUS Currently Unavailable See Oper. Manual

Possible causes/consequences and M Solutions DISTRONIC PLUS is deactivated and is temporarily inoperative if: Rthe DISTRONIC PLUS cover in the radiator grill is dirty. Rthe sensors in the bumpers are dirty. Rthe radar sensor system is temporarily inoperative, e.g. due to

electromagnetic radiation emitted by nearby TV or radio stations or other sources of electromagnetic radiation.

Rits function is impaired due to heavy rain or snow. Rthe system is outside the operating temperature range. Rthe on-board voltage is too low. A warning tone also sounds. DISTRONIC PLUS is operational again and the display message disappears if: Rthe dirt (e.g. slush) drops away while the vehicle is in motion. Rthe system detects that the sensors are fully available again. Rthe system is within the operating temperature range. If the display message continues to be displayed: X Clean the DISTRONIC PLUS cover in the radiator grill

(Y page 414).

X Clean the bumpers (Y page 414). X Restart the engine.

DISTRONIC PLUS is faulty. BAS PLUS and PRE-SAFE® Brake may also have failed. A warning tone also sounds. X Visit a qualified specialist workshop. You have depressed the accelerator pedal. DISTRONIC PLUS is no longer controlling the speed of the vehicle. X Take your foot off the accelerator pedal. An activation condition for DISTRONIC PLUS is not fulfilled. X Check activation conditions for DISTRONIC PLUS

(Y page 293).

DISTRONIC PLUS Inoperative

DISTRONIC PLUS Override

DISTRONIC PLUS --- mph

Display messages

369

Display messages Cruise Control ohne FunktionInoperative Cruise Control --- mph

Possible causes/consequences and M Solutions Cruise control is faulty. X Visit a qualified specialist workshop.

A condition for activating cruise control has not been met. You wanted to save a speed of less than 20 mph (30 km/h). X If the situation allows, drive faster than 20 mph (30 km/h) and

save the speed.

X Check the activation conditions for cruise control

(Y page 291).

Tires G Warning Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You may lose control of the vehicle. Continued driving with a flat tire will cause excessive heat build-up and possibly a fire. G Warning Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated. Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc.

Display messages Tire Pressures Displayed After Driving A Few Minutes Tire Pressure Monitor Inoperative Tire Pressure Monitor Inoperative No Wheel Sensors

Possible causes/consequences and M Solutions The tire pressure monitor is measuring the tire pressure. X Drive on.

The tire pressures appear in the multifunction display after you have been driving for a few minutes.

The TPMS is faulty. X Visit a qualified specialist workshop.

The wheels mounted do not have a suitable tire pressure sensor. The tire pressure monitor is deactivated. X Mount wheels with suitable tire pressure sensors.

The TPMS is activated automatically after driving for a few minutes.

370 Display messages

Display messages Check Tires

Caution Tire Defect

Tire Pressure Please Rectify

Wheel Sensor(s) Missing

Tire Pressure Monitor Currently Unavailable

Tire Press. Warning Caution Tire Malfunction

Possible causes/consequences and M Solutions G Risk of accident The tire pressure in one or more tires has dropped significantly. The wheel position is displayed in the multifunction display. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.

X Correct the tire pressure (Y page 445). X If necessary, change a wheel (Y page 460). G Risk of accident The tire pressure in one or more tires has dropped suddenly. The wheel position is displayed in the multifunction display. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.

X If necessary, change a wheel (Y page 460). The tire pressure is insufficient in at least one of the tires or the tire pressure difference between the wheels is too great. X Check the tire pressures at the next opportunity. If necessary,

correct the tire pressure (Y page 445).

X Restart the tire pressure monitor (Y page 447). There is no signal from the tire pressure sensor of one or several wheels. The pressure of the affected tire is not displayed in the multifunction display. X Have the faulty tire pressure sensor replaced at a qualified

specialist workshop.

No signals are being received from the tire pressure sensors due to radio interference. The tire pressure monitor is temporarily malfunctioning. X Drive on.

The TPMS restarts automatically as soon as the problem has been solved. G Risk of accident The tire pressure in one or more tires has dropped suddenly. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.

X If necessary, change a wheel (Y page 460).

Display messages Check Tire Pressure

Correct Tire Pressure

Vehicle Display messages Shift to P or N to startto Start Engineto Start Engine Auxiliary Battery Malfunction (white display message) Auxiliary Battery Malfunction (red display message)

Apply brake to Shift from 'P'

Display messages

371

Possible causes/consequences and M Solutions G Risk of accident The tire pressure in one or more tires has dropped significantly. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so.

X If necessary, change a wheel (Y page 460). X Check the tire pressure. If necessary, correct the tire pressure

(Y page 445).

The tire pressure is insufficient in at least one of the tires or the tire pressure difference between the wheels is too great. X Check the tire pressures at the next opportunity. If necessary,

correct the tire pressure (Y page 445).

Possible causes/consequences and M Solutions You have attempted to start the engine with the transmission in position R or D. X Shift the transmission to position P or N.

The auxiliary battery for the automatic transmission is no longer being charged. X Visit a qualified specialist workshop.

The auxiliary battery for the automatic transmission is discharged. If there is a malfunction in the vehicle's electrical system, you may not be able to change the transmission position. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances.

X Consult a qualified specialist workshop. You have attempted to move the transmission selector lever to position D, R or N without depressing the brake pedal. X Depress the brake pedal.

Door Open Vehicle Not in Park The driver's door is open and the transmission is in position R, N

or D. X Shift the transmission to position P. X Engage the parking brake.

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Display messages Service Required Do Not Shift Gears

Possible causes/consequences and M Solutions You cannot change the transmission position due to a malfunction. A warning tone also sounds. If transmission position D is selected: X Drive to a qualified specialist workshop without shifting the

transmission from position D.

Only Shift to 'P' when Vehicle is Stationary

If transmission position R, N or P is selected: X Consult a qualified specialist workshop or breakdown service. The vehicle is moving. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Shift the transmission to position P.

N The trunk lid is open. X Close the trunk lid. G Risk of accident The hood is open. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Engage the parking brake. X Close the hood.

C At least one door is open.

X Close all doors. The seat backrest is not engaged. The seat belt will have no effect. X Push the backrest back until it engages.

Lock Seat Backrest Front Left or

Display messages

373

Display messages Power Steering Malfunction See Oper. Manual

Possible causes/consequences and M Solutions G Risk of accident The power steering assistance is faulty. You will need to use more force to steer. X Check whether you are able to apply the extra force required. X If you are able to steer safely: carefully drive on to a qualified

specialist workshop.

X If you are unable to steer safely: do not drive on. Contact the

nearest qualified specialist workshop.

¥ Top up washer fluid

The washer fluid level in the washer fluid reservoir has dropped below the minimum. X Add washer fluid (Y page 408).

SmartKey Display messages  Key Does Not Belong to Vehicle  Take Your Key From Ignition  Obtain a New Key  Replace Key Battery  Don't Forget Your Key

Possible causes/consequences and M Solutions You have put the wrong SmartKey in the ignition lock. X Use the correct SmartKey.

The SmartKey is in the ignition lock. X Remove the SmartKey.

The SmartKey needs to be replaced. X Visit a qualified specialist workshop.

The batteries of the KEYLESS-GO key are discharged. X Change the batteries (Y page 75).

The display message is displayed for a maximum of 60 seconds and is just a reminder. You have opened the driver's door with the engine switched off. The KEYLESS-GO key is not in the ignition lock. X Take the KEYLESS-GO key with you when leaving the vehicle.

374 Display messages

Display messages  Key Not Detected (red display message)

 Key Not Detected (white display message)

 Remove 'Start' Button and Insert Key  Close Doors to Lock Vehicle

Possible causes/consequences and M Solutions The KEYLESS-GO key is not in the vehicle. A warning tone also sounds. If the engine is switched off, you can no longer lock the vehicle centrally or start the engine. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Engage the parking brake. X Locate the KEYLESS-GO key. The KEYLESS-GO key is not detected while the engine is running because there is interference from a strong source of radio waves. A warning tone also sounds. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Engage the parking brake. X Operate the vehicle with the KEYLESS-GO key in the ignition

lock if necessary.

The KEYLESS-GO key cannot be detected at present. X Change the location of the key with the KEYLESS-GO functions

in the vehicle.

If the KEYLESS-GO key is still not detected: X Change the location of the key with the KEYLESS-GO functions

in the vehicle.

X Operate the vehicle with the KEYLESS-GO key in the ignition

lock if necessary.

KEYLESS-GO is temporarily malfunctioning or is defective. X Insert the SmartKey into the ignition lock and turn it to the

desired position.

X Visit a qualified specialist workshop.

At least one door is open. A warning tone also sounds. X Close all doors and lock the vehicle again.

Warning and indicator lamps in the instrument cluster

375

Warning and indicator lamps in the instrument cluster Brakes Problem F (USA only) ! (Canada only) The red indicator lamp for the electric parking brake flashes and/or the yellow warning lamp for the electric parking brake lights up.

display.

Possible causes/consequences and M Solutions The electric parking brake is temporarily malfunctioning or defective. X Observe the additional display messages in the multifunction

$ (USA only) J (Canada only) The red brake system warning lamp comes on while the engine is running. A warning tone also sounds.

G Risk of accident There is insufficient brake fluid in the fluid reservoir. X Pull over and stop the vehicle safely as soon as possible, paying