2012 Mercedes-benz CL Class Owners Manual

The intermediate time is displayed for five seconds.

X Press the X button again within five

seconds. The displayed intermediate time is stored as a lap time. Timing starts for a new lap. The new lap is timed from when the intermediate time is called up.

: Gear indicator ; RACETIMER = Fastest lap time (best lap) Resetting the current lap X Press the W button on the steering

wheel to stop the RACETIMER.

X Press X to reset the lap time to "0”.

Deleting all laps You cannot delete individual stored laps. X Press the W button on the steering

wheel to stop the RACETIMER.

X Press and hold the X button for a

minimum of three seconds.

X Press the W button to start the

RACETIMER. All laps are deleted.

or X Press the W button on the steering

wheel to stop the RACETIMER. X Press the a button. Reset Race Timer appears in the multifunction display.

X Press the : button to select Yes and press the a button to confirm. All laps are deleted.

Overall evaluation This function is shown if you have stored at least one lap and stopped the RACETIMER. X Press = or ; on the steering wheel to select the AMG menu. X Press the 9 button repeatedly until the

overall evaluation is shown.

: RACETIMER overall evaluation ; Total time driven = Top speed ? Distance covered A Average speed

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Lap evaluation This function is only available if you have stored at least two laps and have stopped the RACETIMER. X Press = or ; on the steering wheel to select the AMG menu. X Press the 9 button repeatedly until the

lap evaluation is shown. Each lap is shown in a separate submenu. The fastest lap is indicated by flashing symbol :.

: Lap ; Lap time = Top speed during lap ? Lap length A Average lap speed X Press the 9 or : button to select a

different lap evaluation.

Telephone menu Introduction You can establish a Bluetooth® connection to COMAND (Y page 179). G WARNING A driver's attention to the road must always be his/her primary focus when driving. For your safety and the safety of others, we recommend that you pull over to a safe location and stop before placing or taking a telephone call. If you choose to use the telephone while driving, please use the hands- free device and only use the telephone when weather, road and traffic conditions permit.

Some jurisdictions prohibit the driver from using a mobile phone while driving a vehicle. Bear in mind that at a speed of just 30 mph (approximately 50 km/h ), your vehicle is covering a distance of 44 feet (approximately 14 m) every second.

X Switch on the mobile phone and COMAND

(Y page 123). X Press the = or ; button on the steering wheel to select the Telephone menu.

You will see one of the following display messages in the multifunction display: RTelephone Ready or the name of the network provider: the mobile phone has found a network and is ready to receive. RNo Service: no network is available, or the mobile phone is searching for a network.

Accepting a call If someone calls you when you are in the Telephone menu, a display message appears in the multifunction display, for example:

X Press the 6 button on the steering wheel to accept an incoming call. If you are not in the Telephone menu, you can still accept a call.

Rejecting or ending a call X Press the ~ button on the steering wheel. If you are not in the Telephone menu, you can still reject or end a call.

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Dialing a number from the phone book You can use the mobile phone to enter new telephone numbers into the phone book (see COMAND) (Y page 187). If your mobile phone is operational, you can select and dial a number from the phone book at any time. When you establish a Bluetooth® connection to COMAND, COMAND reads in the phone book of the mobile phone. This can take some time. While the on-board computer reads in the SIM card: Ryou can dial a telephone number from the redial list (Calls dialed list). Ryou can dial a telephone number from the

telephone book stored in COMAND. Rthe multifunction display shows the Reading data... display message below the phone book entries. When the multifunction display shows the Updating data... display message, COMAND has finished importing data. The multifunction display then shows all the phone book entries in COMAND and the mobile phone. X Press the = or ; button on the steering wheel to select the Telephone menu.

X Press the 9, : or a button to call

up the phone book.

X Press the 9 or : button to select the

desired name. To scroll rapidly, press and hold the : or 9 button for longer than one second. After skipping eight entries, the rapid scroll speeds up. Rapid scrolling stops when you release the button or reach the end of the list.

X If only one telephone number is stored for a name: press the 6 or a button to start dialing.

or X If there is more than one number for a particular name: press the 6 or a button to display the numbers.

X Press the 9 or : button to select the

number you want to dial.

X Press the 6 or a button to start

dialing.

or X If you do not want to make a call: press

the ~ or % button.

Redialing The on-board computer saves the last names or numbers dialed in the redial memory (Calls Dialed list). X Press the = or ; button on the steering wheel to select the Telephone menu.

X Press the 6 button to switch to the

redial memory.

X Press the 9 or : button to select the

desired name or number. To scroll rapidly, press and hold the : or 9 button for longer than one second.

X Press the 6 or a button to start

dialing.

or X If you do not want to make a call: press

the ~ or % button.

Assistance menu Showing the distance display This function is only available with DISTRONIC PLUS.

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X Press the = or ; button on the steering wheel to select the DriveAssist menu. X Press the 9 or : button to select Distance Display. X Press a.

The DISTRONIC PLUS distance display (Y page 299) appears in the multifunction display.

Deactivating/activating ESP® G WARNING Under no circumstances should you deactivate ESP® when the ÷ ESP® warning lamp in the instrument cluster flashes. Proceed as follows: Rwhen driving off, apply as little throttle as

possible.

Rwhile driving, ease up on the accelerator

pedal.

Radapt your speed to suit the prevailing road

and weather conditions.

Failure to observe these guidelines could cause the vehicle to skid. ESP® cannot prevent accidents resulting from excessive speed.

For further information about ESP®, see (Y page 64). X Start the engine. X Press = or ; on the steering wheel to select the DriveAssist menu. X Press the 9 or : button to select ESP. X Press the a button. X To deactivate: press a again.

The å warning lamp in the instrument cluster comes on. G WARNING When the å ESP® OFF warning lamp is lit, ESP® is deactivated.

If the ÷ ESP® warning lamp and the å ESP® OFF warning lamp remain lit, ESP® is not available due to a malfunction. When ESP® is deactivated or not operational, vehicle stability in standard driving maneuvers is reduced. Adapt your speed and driving to the prevailing road conditions and to the non-operating status of the ESP®.

X To activate: press a again.

The å warning lamp in the instrument cluster goes out.

Activating/deactivating PRE-SAFE® Brake PRE-SAFE® Brake is only available in vehicles with DISTRONIC PLUS. X Press the = or ; button on the steering wheel to select the DriveAssist menu. X Press 9 or : to select PRE-SAFE Brake. X Press a.

The current selection is displayed.

X To activate/deactivate: press a

again.

When PRE-SAFE® Brake (Y page 66) is activated, the multifunction display shows the Ä symbol as long as the HOLD function is not activated (Y page 302).

Activating/deactivating ATTENTION ASSIST X Press the = or ; button on the steering wheel to select the DriveAssist menu. X Press the 9 or : button to select Attention Assist. X Press a.

The current selection is displayed.

X To activate/deactivate: press a

again.

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343

When ATTENTION ASSIST (Y page 316) is activated, the À symbol appears in the multifunction display when the ignition is on.

Rcall up the service due date (Y page 413) Rcheck the oil level (Y page 409)

Activating/deactivating Active Blind Spot Assist You can use the Blind Spot Assist function to activate or deactivate Active Blind Spot Assist (Y page 321). X Press = or ; on the steering wheel to select the DriveAssist menu. X Press 9 or : to select Blind Spot Assist. X Press a.

The current selection is displayed.

X To activate/deactivate: press a

again.

Activating/deactivating Active Lane Keeping Assist You can use the Lane Keeping Assist function to activate or deactivate Active Lane Keeping Assist (Y page 324). X Press the = or ; button on the steering wheel to select the DriveAssist menu. X Press the 9 or : button to select Lane Keeping Assist. X Press a.

The current selection is displayed.

X To activate/deactivate: press a

again.

If Active Lane Keeping Assist is activated, the à symbol appears in the multifunction display when the ignition is on.

Service menu In the Service menu you can: Rcall up display messages (Y page 346) Rcheck the tire pressure electronically

(Y page 449)

Settings menu Introduction The Settings menu can be used for: Rswitching the daytime running lamps on/

off

Rswitching Adaptive Highbeam Assist on/

off

Rshowing or hiding the additional

speedometer

Rselecting the units for speed and distance Ractivating/deactivating the radar sensor

system

Switching the daytime running lamps on/off This function is not available in Canada. If you have activated the Daytime Running Light function and the light switch is in the $ or c position, the daytime running lamps are switched on automatically when the engine is running. In the dark, the following also light up: Rthe parking lamps Rthe tail lamps Rthe license plate lamp Rthe side marker lamps If you turn the light switch to a different position, the corresponding lights are switched on. If you switch off the daytime running lamps at night, make sure that the light switch is set to L or c. The factory setting is On. X Press the = or ; button on the steering wheel to select the Settings menu. X Press the 9 or : button to select Day Running Lights.

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X Press the a button to confirm. X To activate/deactivate: press a

again.

Switching Adaptive Highbeam Assist on/off X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select Adapt. High-beam Asst.. X Press the a button to confirm. X To activate/deactivate: press a

again.

Switching the additional speedometer on or off An additional digital speedometer can be shown in the multifunction display. Vehicles with a kilometer speedometer: the digital speedometer has mph units. Vehicles with a miles speedometer: the digital speedometer has km/h units. X Press the = or ; button on the steering wheel to select the Settings menu. X Press 9 or : to select Add. Speedometer. X Press the a button to confirm. X Press the a button to save the setting.

Selecting the unit of measurement for distance The Display Unit Speed-/Odometer: function allows you to choose whether certain displays appear in kilometers or miles. The selected unit of measurement for distance applies to: Rthe analog speedometer Rthe digital speedometer in the Trip menu Rthe odometer and the trip odometer Rthe trip computer

Rthe navigation instruction in the Navi menu RDISTRONIC PLUS RASSYST PLUS service interval display The digital speedometer shows alternative speed units (Y page 344). X Press the = or ; button on the steering wheel to select the Settings menu. X Press the 9 or : button to select Units. X Press the a button to confirm. X Press the a button to save the setting. The unit switches between km/h and mph.

Activating/deactivating the acoustic locking verification signal If you activate the Acoustic Lock Feedb. function, an audible signal sounds depending on the vehicle's date of manufacture: Rwhen locking

or

Ronce when unlocking and three times when

locking X Press the = or ; button on the steering wheel to select the Settings menu. X Press the 9 or : button to select Acoustic Lock Feedb. X Press the a button to confirm. X To activate/deactivate: press a

again.

Activating/deactivating the radar sensor system The following systems are switched off when the radar sensor system is deactivated: RDISTRONIC PLUS (Y page 292) RBAS PLUS (Y page 62) RPRE-SAFE® Brake (Y page 66) RActive Blind Spot Assist (Y page 321)

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i USA only: This device has been approved by the FCC as a "Vehicular Radar System". The radar sensor is intended for use in an automotive radar system only. Removal, tampering, or altering of the device will void any warranties, and is not permitted by the FCC. Do not tamper with, alter, or use in any non-approved way. Any unauthorized modification to this device could void the user's authority to operate the equipment.

i Canada only:

This device complies with RSS-210 of Industry Canada. Operation is subject to the following two conditions: 1. This device may not cause harmful interference, and 2. this device must accept any interference received, including interference that may cause undesired operation. Any unauthorized modification to this device could void the user's authority to operate the equipment. X Press the = or ; button on the steering wheel to select the Settings menu. X Press 9 or : to select Radar sensors. X Press the a button to confirm. X To activate/deactivate: press a

again.

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Display messages General notes G WARNING All categories of messages contain important information which should be taken note of and, where a malfunction is indicated, addressed as soon as possible at an authorized Mercedes-Benz Center. Failure to repair the condition noted may cause damage not covered by the Mercedes-Benz Limited Warranty, or result in property damage or personal injury.

Display messages appear in the multifunction display. Display messages with graphic displays may be shown in simplified form in the Operator's Manual and may differ from the messages shown in the multifunction display. Please respond in accordance with the display messages and follow the additional notes in this Operator's Manual. Certain display messages are accompanied by an audible warning tone or a continuous tone. When you stop and park the vehicle, please observe the notes on the HOLD function (Y page 302) and parking (Y page 283).

Hiding display messages You can hide some display messages with a low priority. X Press the a or % button on the steering wheel to hide the display message.

The display message is cleared.

Display messages with a low priority are shown in either yellow or white. Display messages with a high priority are shown in red. You cannot hide display messages of the highest priority. The multifunction display shows these messages continuously until the causes for the messages have been remedied.

Message memory The on-board computer saves certain display messages. You can call up the display messages in the message memory. X Press the = or ; button on the steering wheel to select the Service menu. If there are display messages, the multifunction display shows, for example, 2 messages. X Press the 9 or : button to select the entry, e.g. 2 messages. X Confirm with a. X Press the 9 or : button to scroll through the display messages. When the ignition is switched off, all display messages are deleted apart from some high- priority display messages. Once the causes of the high-priority display messages have been rectified, the corresponding display messages are also deleted.

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347

Safety systems Display messages !÷ Currently Unavailable See Oper. 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®, the HOLD function and hill start assist are temporarily unavailable. BAS PLUS and PRE-SAFE® Brake may also have failed. In addition, the ÷, å and ! warning lamps light up in the instrument cluster. The self-diagnosis function might not be complete, for example. 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 Carefully drive a suitable distance making slight steering

movements at a speed above 12 mph (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®, the HOLD function and hill start assist are temporarily unavailable. BAS PLUS and PRE-SAFE® Brake may also have failed. In addition, the ÷, å and ! warning lamps light up in the instrument cluster. For example, the on-board voltage may be insufficient. 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

÷ Currently Unavailable See Oper. Manual

Possible causes/consequences and M Solutions G Risk of accident ABS, ESP®, BAS, PRE-SAFE®, the HOLD function and hill start assist are unavailable due to a malfunction. BAS PLUS and PRE-SAFE® Brake may also have failed. The $ (USA only)/ J (Canada only), ÷, å and ! warning lamps in the instrument cluster also light up. 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 ESP®, BAS, PRE-SAFE®, the HOLD function and hill start assist are temporarily unavailable. BAS PLUS and PRE-SAFE® Brake may also have failed. In addition, the ÷ and å warning lamps light up in the instrument cluster. The self-diagnosis function might not be complete, for example. ATTENTION ASSIST is deactivated. The brake system continues to function normally, but without the functions listed above. X Carefully drive a suitable distance making slight steering

movements at a speed above 12 mph (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 If the display message is shown and the ÷ warning lamp flashes at the same time, the Electronic Traction System is deactivated. Otherwise, the brakes on the drive wheels could overheat. X Let the brakes cool down until the display message disappears

and the ÷ warning lamp goes out. The Electronic Traction System is activated again.

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349

Display messages ÷ Inoperative See Oper. Manual

å System Inoperative

T! ÷ Inoperative See Oper. Manual

Check Brake Pad Wear

Possible causes/consequences and M Solutions G Risk of accident ESP®, BAS, PRE-SAFE®, the HOLD function and hill start assist are unavailable due to a malfunction. BAS PLUS and PRE-SAFE® Brake may also have failed. In addition, the ÷ and å 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. X Drive on carefully. X Visit a qualified specialist workshop. G Risk of accident ESP®, BAS, PRE-SAFE®, the HOLD function and hill start assist are unavailable due to a malfunction. BAS PLUS and PRE-SAFE® Brake may also have failed. In addition, the ÷ and å warning lamps light up in the instrument cluster. ATTENTION ASSIST is deactivated. X Drive on carefully. X Visit a qualified specialist workshop. G Risk of accident EBD (electronic brake force distribution), ABS, ESP®, BAS, PRE- SAFE®, the HOLD function 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 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.

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Display messages F(USA only)!(Canada only) Please Release Parking Brake

Possible causes/consequences and M Solutions 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 284).

The red F (USA only)/ ! (Canada only) indicator lamp flashes and a warning tone sounds. You are making an emergency stop using the electric parking brake (Y page 284). X After the emergency stop: release the electric parking brake

lever.

The red F (USA only)/ ! (Canada only) indicator lamp flashes, the yellow F (USA only)/ ! (Canada only) warning lamp lights up 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 handle. While the vehicle is stationary: X Switch off the ignition and turn it back on. X Release the electric parking brake. If the display message continues to be displayed: X Shift the transmission to P. X Use the folding wheel chock (Y page 426) from the vehicle tool

kit to secure the vehicle against rolling away.

X Consult a qualified specialist workshop.

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351

Display messages F(USA only)!(Canada only) Parking Brake See Oper. Manual

Possible causes/consequences and M Solutions 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 handle. 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 426) 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. The power supply for the electric parking brake was interrupted. X Pull the electric parking brake handle. or X Pull away carefully. or X Pull the electric parking brake handle 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 Engage or release the electric parking brake. or X Pull away carefully. X Visit 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 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 overvoltage or undervoltage. X Pull away carefully. X Visit a qualified specialist workshop. If there is overvoltage or undervoltage: X Remove the cause for the overvoltage or undervoltage, e.g. by

charging the battery or restarting the engine.

X Switch the ignition off and on, and then engage 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. 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 engage or release the

electric parking brake during this time.

X Use the folding wheel chock (Y page 426) 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 engage or release the electric parking brake.

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Display messages F(USA only)!(Canada only) Parking Brake Inoperative

F(USA only)!(Canada only) Turn On the Ignition to Release the Parking Brake $(USA only)J(Canada only) Service See Oper. Manual $(USA only)J(Canada only) Check Brake Fluid Level

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 is malfunctioning. X Switch the ignition off and on, and then engage the electric

parking brake.

If it is not possible to engage the electric parking brake: X Shift the transmission to P. X Use the folding wheel chock (Y page 426) 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 attempted to release the electric parking brake while the ignition was switched off. X SmartKey: turn the SmartKey to position 1 in the ignition lock. X KEYLESS-GO: switch on the ignition.

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 not enough 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 Engage the electric parking brake. X Consult a qualified specialist workshop. X Do not add brake fluid. This will not rectify the malfunction.

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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.

Display messages Tele Aid Inoperative

PRE-SAFE Inoperative See Oper. Manual

Possible causes/consequences and M Solutions USA only: one or more of the main functions in the mbrace system are malfunctioning. Canada only: one or more of the main functions of the TELEAID system are malfunctioning. X USA only: have the mbrace system checked at a qualified

specialist workshop.

X Canada only: have the TELEAID system checked at a qualified

specialist workshop.

G Risk of injury Important functions of PRE-SAFE® have failed. All other occupant safety systems, e.g. air bags, remain available. X Visit a qualified specialist workshop immediately.

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Display messages PRE-SAFE Functions Currently Limited See Operator's Manual

PRE-SAFE Function Limited See Oper. Manual

SRS Malfunction Service Required

Possible causes/consequences and M Solutions G Risk of accident PRE-SAFE® Brake is temporarily inoperative if: Rthe DISTRONIC PLUS cover in the radiator grill is dirty. Rthe sensors in the bumpers are dirty. Rits function is impaired due to heavy rain or snow. 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. Rthe system is outside the operating temperature range. Rthe on-board voltage is too low. PRE-SAFE® Brake 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 418).

X Clean the bumpers (Y page 418). X Restart the engine. X Wait until the battery is sufficiently charged. G Risk of accident PRE-SAFE® Brake is defective. BAS PLUS or the distance warning signal may also have failed. X Visit a qualified specialist workshop. G Risk of injury There is a malfunction in the SRS (Supplemental Restraint System). The 6 warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop.

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Display messages Front Left SRS Malfunction Service Required or Front Right SRS Malfunction Service Required Rear Left SRS Malfunction Service Required or Rear Right SRS Malfunction Service Required Left Side Curtain Airbag Malfunction Service Required or Right Side Curtain Airbag Malfunction Service Required

Possible causes/consequences and M Solutions G Risk of injury SRS has malfunctioned at the front on the left or right. The 6
warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop.

G Risk of injury SRS has malfunctioned at the rear on the left or right. The 6
warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop.

G Risk of injury There is a malfunction in the left-hand and/or right-hand window curtain air bag. The 6 warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop.

G WARNING In the event a malfunction of the SRS is indicated as outlined above, the SRS may not be operational. For your safety, we strongly recommend that you contact an authorized Mercedes-Benz Center immediately to have the system checked. Otherwise the SRS may not be activated when needed in an accident, which could result in serious or fatal injury, or it might deploy unexpectedly and unnecessarily which could also result in injury.

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357

Display messages Front Passenger Airbag Enabled See Oper. Manual

Possible causes/consequences and M Solutions The front-passenger air bag is enabled during the journey, even though: Ra child, a small adult or an object weighing less than the

system's weight threshold is located on the front-passenger seat.

Rthe front-passenger seat is unoccupied. The system may detect objects or forces applying additional weight on the seat. 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 Switch off the ignition. X Open the front-passenger door. X Remove the child and the child restraint system from the front-

passenger seat.

X If necessary, secure the child in a child restraint system on a

suitable rear seat.

X Make sure that there are no objects on the seat adding to the

weight. The system may otherwise detect the additional weight and interpret the seat occupant's weight as greater than it actually is.

X Keep the seat unoccupied, close the front-passenger door and

switch on the ignition.

Observe the 42(Y page 46) indicator lamp and the multifunction display and check the following: Seat unoccupied and ignition switched on: Rthe 42 indicator lamp must light up and remain lit. When the indicator lamp is on, OCS (Y page 46) has deactivated the front-passenger air bag. Rthe Front Passenger Airbag Enabled See Oper. Manual or Front Passenger Airbag Disabled See Oper. Manual display messages must not appear in the multifunction display. Wait for a period of at least 60 seconds until the necessary system checks have been completed and to make sure that the display messages do not appear in the multifunction display.

If the conditions are not fulfilled, the system is not operating correctly. X Visit a qualified specialist workshop immediately.

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G WARNING If the 42 indicator lamp remains off even after performing the above corrective steps, do not have any children 12 years old and under and other small individuals use the front- passenger seat until the system has been repaired.

Display messages Front Passenger Airbag Disabled See Oper. Manual

Possible causes/consequences and M Solutions The front-passenger air bag is deactivated during the journey even though an adult or a person larger than a certain size is occupying the front-passenger seat. If additional forces are applied to the seat, the system may interpret the occupant's weight as lower than it actually is. 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 Switch off the ignition. X Have the occupant get out of the vehicle. X Keep the seat unoccupied, close the front-passenger door and

switch on the ignition.

Observe the 42(Y page 46) indicator lamp and the multifunction display and check the following: Seat unoccupied and ignition switched on: Rthe 42 indicator lamp must light up and remain lit. When the indicator lamp is on, OCS (Y page 46) has deactivated the front-passenger air bag. Rthe Front Passenger Airbag Enabled See Oper. Manual or Front Passenger Airbag Disabled See Oper. Manual display messages must not appear in the multifunction display. Wait for a period of at least 60 seconds until the necessary system checks have been completed and to make sure that the display messages do not appear in the multifunction display. If these conditions are fulfilled, 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 fulfilled, 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.

Lights i Display messages about LEDs:

Display messages

359

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

(Y page 250).

This display message will only appear if all LEDs have failed. Display messages Check Left Cornering Light or Check Right Cornering Light Check Left Low Beam or Check Right Low Beam

or X Visit a qualified specialist workshop.

or X Visit a qualified specialist workshop.

(Y page 250).

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

Check Rear Left Turn Signal or Check Rear Right Turn Signal Check Front Left Turn Signal or Check Front Right Turn Signal Check Left Mirror Turn Signal or Check Right Mirror Turn Signal

The rear left-hand or rear right-hand turn signal is defective. 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 defective. 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 or right-hand exterior mirror is defective. X Check whether you are permitted to change the bulb yourself

(Y page 250).

or X Visit a qualified specialist workshop.

360 Display messages

Display messages Check Center Brake Lamp

Check Left Tail and Brake Lamp or Check Right Tail and Brake Lamp Check Left High Beam or Check Right High Beam

Check Left License Plate Lamp or Check Right License Plate Lamp Check Left Fog Lamp or Check Right Fog Lamp

Check Rear Left Fog Lamp or Check Rear Right Fog Lamp

Check Front Left Parking Lamp or Check Front Right Parking Lamp

Possible causes/consequences and M Solutions 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.

The left or right-hand tail lamp/brake 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 left or right-hand high beam is defective. 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 defective. 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 defective. 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 defective. 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 parking or standing lamp is defective. 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 Reverse Lamp or Check Right Reverse Lamp

Check Front Left Sidemarker Lamp or Check Front Right Sidemarker Lamp Check Rear Left Sidemarker Lamp or Check Rear Right Sidemarker Lamp Check Left Daytime Running Light or Check Right Daytime Running Light Active Headlamps Inoperative Malfunction See Oper. Manual AUTO Lamp Function Inoperative

Display messages

361

Possible causes/consequences and M Solutions The left or right-hand backup 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 left or right front side marker 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 rear left or right side marker 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 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 defective. X Visit a qualified specialist workshop.

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

The light sensor is defective. X Visit a qualified specialist workshop. USA only: X Switch off the daytime running lamps in the on-board computer

(Y page 343).

X Switch the lights on and off using the light switch.

362 Display messages

Display messages 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 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 defective. 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 411).

X If coolant needs to be added 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.

Display messages

363

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 and switch off the engine,

paying attention to road and traffic conditions.

X Make sure that the air supply to the engine radiator is not

blocked, e.g. by snow, slush or ice.

X Wait until the display message disappears before restarting the

engine. Otherwise, there is 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 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 not damaged: X Wait until the display message disappears before restarting the

engine. Otherwise, there is 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.

364 Display messages

Display messages ? The engine fan is defective.

Possible causes/consequences and M Solutions

X At coolant temperatures under 248 ‡ (120 † ), drive to the next

qualified specialist workshop.

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

mountainous terrain, and stop-and-go traffic.

# The battery is not being charged.

Possible causes are: Ra defective alternator