2013 Mercedes-benz M Class Owners Manual

X Press the = or ; button on the steering wheel to select the Sett. menu. X Press the : or 9 button to select the Light submenu. X Press a to confirm. X Press : or 9 to select the Surround Lighting function. When the Surround Lighting function is activated, the light cone and the area around the vehicle are displayed in red in the multifunction display.

X Press the a button to save the setting. Deactivating delayed switch-off of the exterior lighting temporarily: X Before leaving the vehicle, turn the

SmartKey to position 0 in the ignition lock.

X Turn the SmartKey to position 2 in the

ignition lock. The exterior lighting delayed switch-off is deactivated.

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Delayed switch-off of the exterior lighting is reactivated the next time you start the engine. If you have activated the Surround Lighting function and the light switch is set to Ã, the following functions are activated when it is dark: RSurround lighting: the exterior lighting

remains lit for 40 seconds after unlocking with the SmartKey. If you start the engine, the surround lighting is switched off and the automatic headlamp mode is activated (Y page 120).

RExterior lighting delayed switch-off: the

exterior lighting remains lit for 60 seconds after the engine is switched off. If you close all the doors and the tailgate, the exterior lighting goes off after 5 seconds.

i Depending on your vehicle's equipment,

when the surround lighting and delayed switch-off exterior lighting are on, the following light up: RParking lamps RDaytime running lamps RSide marker lamps RSurround lighting in the exterior mirrors

Activating/deactivating the interior lighting delayed switch-off If you activate the Interior Lighting Delay function, the interior lighting remains on for 20seconds after you remove the SmartKey from the ignition lock. X Press the = or ; button on the steering wheel to select the Sett. menu. X Press the : or 9 button to select the Lights submenu. X Press a to confirm. X Press : or 9 to select the Interior Lighting Delay function. When the Interior Lighting Delay function is activated, the vehicle interior is

displayed in red in the multifunction display.

X Press the a button to save the setting.

Vehicle submenu Activating/deactivating the automatic door locking mechanism If you activate the Automatic Door Lock function, the vehicle is centrally locked above a speed of around 9 mph (15 km/h). X Press the = or ; button on the steering wheel to select the Sett. menu. X Press : or 9 to select the Vehicle submenu.

X Press a to confirm. X Press : or 9 to select the Automatic Door Lock function. When the Automatic Door Lock function is activated, the vehicle doors are displayed in red in the multifunction display.

X Press the a button to save the setting. For further information on the automatic locking feature, see (Y page 86). Activating/deactivating the acoustic locking verification signal If you switch on the Acoustic Lock function, an acoustic signal sounds when you lock the vehicle. X Press the = or ; button on the steering wheel to select the Sett. menu. X Press : or 9 to select the Vehicle submenu.

X Press a to confirm. X Press the : or 9 button to select the Acoustic Lock function. If the Acoustic Lock function is activated, the & symbol in the multifunction display lights up red.

X Press the a button to save the setting.

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Activating/deactivating the radar sensor system X Press the = or ; button on the steering wheel to select the Sett. menu. X Press : or 9 to select the Vehicle submenu.

X Press a to confirm. X Press the 9 or : button to select Radar Sensor (See Oper. Manual):. You will see the selected setting: Enabled or Disabled. X Press the a button to save the setting. The following systems are switched off when the radar sensor system is deactivated: RDISTRONIC PLUS (Y page 194) RBAS PLUS (Y page 67) RPRE-SAFE® Brake (Y page 73) RBlind Spot Assist (Y page 233) RActive Blind Spot Assist (Y page 237)

Convenience submenu Activating/deactivating the EASY- ENTRY/EXIT feature G WARNING You must make sure no one can become trapped or injured by the moving steering wheel when the easy-entry/exit feature is activated. To stop steering wheel movement, move steering wheel adjustment lever or press one of the memory position buttons. Do not leave children unattended in the vehicle, or with access to an unlocked vehicle. Children could open the driver's door and unintentionally activate the easy-entry/exit feature, which could result in an accident and/or serious personal injury.

X Press the = or ; button on the steering wheel to select the Sett. menu. X Press the : or 9 button to select the Convenience submenu.

X Press a to confirm. X Press : or 9 to select the Easy Entry/Exit function. If the Easy Entry/Exit function is activated, the vehicle steering wheel is displayed in red in the multifunction display.

X Press the a button to save the setting. Further information on the EASY-ENTRY/EXIT feature (Y page 112). Switching the belt adjustment on/off X Press the = or ; button on the steering wheel to select the Sett. menu. X Press the : or 9 button to select the Convenience submenu. X Press a to confirm. X Press the : or 9 button to select the Belt Adjustment function. When the Belt Adjustment function is activated, the vehicle seat belt is displayed in red in the multifunction display.

X Press the a button to save the setting. For further information on belt adjustment, see (Y page 57). Switching the fold-in mirrors when locking feature on/off This function is only available on vehicles with the memory function (Y page 116). When you activate the Auto. Mirror Folding function, the exterior mirrors are folded in when the vehicle is locked. If you unlock the vehicle and then open a door, the exterior mirrors fold out again. X Press the = or ; button on the steering wheel to select the Sett. menu. X Press the : or 9 button to select the Convenience submenu. X Press a to confirm.

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X Press : or 9 to select the Auto. Mirror Folding function. If the Auto. Mirror Folding function is activated, the vehicle's exterior mirror is displayed in red in the multifunction display.

X Press the a button to save the setting.

ON&OFFROAD menu

Multifunction display (example) X Press the = or ; button on the steering wheel to select the ON&OFFROAD menu. You can set the following current settings to appear in the ON&OFFROAD menu: ROn-road program (Y page 243) ROff-road program (Y page 248)

AMG menu in AMG vehicles AMG displays

: Digital speedometer ; Gear indicator = Upshift indicator ? Engine oil temperature A Coolant temperature B ECO start/stop function status indicator

(Y page 161) X Press the = or ; button on the steering wheel to select the AMG menu. Upshift indicator UP= indicates that the engine has reached the overrevving range when in the manual gearshift program. Upshift indicator UP= fades out other messages until you have shifted up. When the engine oil temperature is below 176 ‡ (80 †) the oil temperature is shown in

: To fold the exterior mirrors in or out If you have switched the Auto. Mirror Folding on and you fold the exterior mirrors in using button : , they will not fold out automatically (Y page 114). You can then only fold out the exterior mirrors using button :.

Restoring the factory settings X Press the = or ; button on the steering wheel to select the Sett. menu. X Press the : or 9 button to select the Factory Setting submenu. X Press a to confirm. The Reset All Settings? message appears. X Press the : or 9 button to select No or Yes. X Press a to confirm the selection. If you select Yes, the multifunction display shows a confirmation message. For safety reasons, the Daytime Running Lights function in the Lights submenu is only reset if the vehicle is stationary.

blue. Avoid driving at full engine output during this time.

SETUP

: Drive program (C/S/M) ; ESP® mode (ON/OFF) = Suspension tuning (COMFORT/SPORT/

SPORT+)

SETUP shows the drive program, the ESP® (Electronic Stability Program) mode and the suspension tuning. X Press the = or ; button on the steering wheel to select the AMG menu. X Press the 9 button repeatedly until

SETUP is displayed.

RACETIMER Displaying and starting RACETIMER The RACETIMER is only intended for use on a closed race circuit. Do not use the function on public roads.

: Lap ; RACETIMER

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You can start the RACETIMER when the engine is running or if the SmartKey is in position 2 in the ignition lock. X Press = or ; on the steering wheel to select the AMG menu. X Press the 9 button repeatedly until the

RACETIMER is shown.

X To start: press the a button to start the

RACETIMER.

Displaying the intermediate time

X Press the = or ; button to select Interm. Time. X Press a to confirm.

The intermediate time is displayed for five seconds.

Starting a new lap

: RACETIMER ; Fastest lap time (best lap) = Lap X Press a to confirm New Lap. i It is possible to store a maximum of sixteen laps. The 16th lap can only be completed with Finish Lap.

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Stopping the RACETIMER

Overall statistics

X Press the % button on the steering wheel. X Press a to confirm Yes. The RACETIMER interrupts timing when you stop the vehicle and turn the SmartKey to position 1 in the ignition lock. If you turn the SmartKey to position 2 or 3 and then press a to confirm Start, timing is continued. Resetting the current lap X Stop the RACETIMER. X Press the = or ; button to select Reset Lap. X Press a to reset the lap time to "0".

Deleting all laps

: RACETIMER overall evaluation ; Total time driven = Average speed ? Distance covered A Maximum speed This function is shown if you have stored at least one lap and stopped the RACETIMER. X Press the = or ; button on the steering wheel to select the AMG menu. X Press the 9 button repeatedly until the

overall evaluation is shown.

Lap statistics

: Lap ; Lap time = Average lap speed ? Lap length A Top speed during lap

If you switch off the engine, the RACETIMER is reset to "0" after 30 seconds. All laps are deleted. You cannot delete individual stored laps. If you have stopped 16 laps, the current lap does not have to be reset. X Reset the current lap. X Press a to confirm Reset. 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.

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This function is only available if you have stored at least two laps and have stopped the RACETIMER. X Press the = or ; button 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 :.

X Press the 9 or : button to select a

different lap evaluation.

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Display messages Introduction General notes 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: RHOLD function (Y page 207) RParking (Y page 179)

Hiding display messages X Press the a or % button on the steering wheel to hide the display message.

The display message is cleared.

The multifunction display shows high-priority display messages in red. Some high-priority display messages cannot be hidden. 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 in the message memory. You can call up the display messages: X Press the = or ; button on the steering wheel to select the Serv. menu. If there are display messages, the multifunction display shows 2 Messages, for example. X Press the 9 or : button to select the entry, e.g. 2 Messages. X Press a to confirm. 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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Safety systems Display messages !÷ Currently Unavailable See Operator's Manual

!÷ Inoperative See Operator's Manual

Possible causes/consequences and M Solutions ABS (Anti-lock Braking System), ESP® (Electronic Stability Program), BAS (Brake Assist), PRE-SAFE®, the HOLD function, hill start assist and ESP® trailer stabilization are temporarily unavailable. COLLISION PREVENTION ASSIST, 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. Possible causes are: RSelf-diagnosis is not yet complete. RThe on-board voltage may be insufficient. G WARNING The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. The steerability and braking characteristics may be severely affected. The braking distance in an emergency braking situation can increase. If ESP® is not operational, ESP® is unable to stabilize the vehicle. There is an increased risk of skidding and an accident. X Carefully drive a short distance on a suitable stretch of road, 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.

ABS, ESP®, BAS, PRE-SAFE®, the HOLD function, hill start assist and ESP® trailer stabilization are unavailable due to a malfunction. COLLISION PREVENTION ASSIST, 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. ATTENTION ASSIST is deactivated. G WARNING

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Display messages

÷ Currently Unavailable See Operator's Manual

Possible causes/consequences and M Solutions The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. The steerability and braking characteristics may be severely affected. The braking distance in an emergency braking situation can increase. If ESP® is not operational, ESP® is unable to stabilize the vehicle. There is an increased risk of skidding and an accident. X Drive on carefully. X Visit a qualified specialist workshop immediately.

ESP®, BAS, PRE-SAFE®, the HOLD function, hill start assist and ESP® trailer stabilization are unavailable due to a malfunction. COLLISION PREVENTION ASSIST, 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. G WARNING The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. The braking distance in an emergency braking situation can thus increase. If ESP® is not operational, ESP® is unable to stabilize the vehicle. There is an increased risk of skidding and an accident. X Carefully drive a short distance on a suitable stretch of road, 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.

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Display messages ÷ Inoperative See Operator's Manual

T! ÷ Inoperative See Operator's Manual

Possible causes/consequences and M Solutions ESP®, BAS, PRE-SAFE®, the HOLD function, hill start assist and ESP® trailer stabilization are unavailable due to a malfunction. COLLISION PREVENTION ASSIST, 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. G WARNING The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. The braking distance in an emergency braking situation can thus increase. If ESP® is not operational, ESP® is unable to stabilize the vehicle. There is an increased risk of skidding and an accident. X Drive on carefully. X Visit a qualified specialist workshop.

EBD (electronic brake force distribution), ABS, ESP®, BAS, PRE- SAFE®, the HOLD function, hill start assist and ESP® trailer stabilization are unavailable due to a malfunction. COLLISION PREVENTION ASSIST, 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. G WARNING The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. The steerability and braking characteristics may be severely affected. The braking distance in an emergency braking situation can increase. If ESP® is not operational, ESP® is unable to stabilize the vehicle. There is an increased risk of skidding and an accident. X Drive on carefully. X Visit a qualified specialist workshop immediately.

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

F(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 and a warning tone sounds. A condition for automatic release of the electric parking brake is not fulfilled (Y page 180). You are driving with the electric parking brake applied. X Release the electric parking brake manually.

The red F (USA only)/! (Canada only) indicator lamp flashes and a warning tone sounds. You are using the electric parking brake for emergency braking (Y page 180). The yellow ! warning lamp lights up. The electric parking brake is malfunctioning. To apply: X Switch the ignition off. X Press the electric parking brake handle for at least ten seconds. X Shift the transmission to P. X Consult a qualified specialist workshop. The yellow ! warning lamp and the red F (USA only)/! (Canada only) indicator lamp light up. The electric parking brake is malfunctioning. To release: X Switch off the ignition and turn it back on. X Release the electric parking brake manually. or X Release the electric parking brake automatically (Y page 180). If the electric parking brake still cannot be released: X Do not drive on. X Consult a qualified specialist workshop.

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Display messages

Possible causes/consequences and M Solutions The red F (USA only)/! (Canada only) indicator lamp flashes and the yellow ! warning lamp lights up. The electric parking brake is malfunctioning. To release: X Switch off the ignition and turn it back on. X Release the electric parking brake manually. To apply: X Switch off the ignition and turn it back on. X Apply the electric parking brake manually. If the red F (USA only)/! (Canada only) indicator lamp continues to flash: X Do not drive on. X Secure the vehicle against rolling away (Y page 422). X Shift the transmission to P. X Turn the front wheels towards the curb. X Consult a qualified specialist workshop. The yellow ! warning lamp lights up. The red F (USA only)/! (Canada only) indicator lamp flashes for about ten 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 off the ignition and turn it back on. X Apply the electric parking brake. If it is not possible to engage the electric parking brake: X Shift the transmission to P. X Visit a qualified specialist workshop. If it is not possible to release the electric parking brake: X Release the electric parking brake automatically (Y page 180). If the electric parking brake still cannot be released: X Consult a qualified specialist workshop.

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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

Possible causes/consequences and M Solutions The yellow ! warning lamp lights up. If you manually apply or release the electric parking brake, the red F (USA only)/! (Canada only) indicator lamp flashes. The electric parking brake is malfunctioning. It is not possible to apply the electric parking brake manually. X Shift the transmission to P. X Visit a qualified specialist workshop. The yellow ! warning lamp lights up. The red F (USA only)/! (Canada only) indicator lamp flashes for about ten 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 Remove the cause for the overvoltage or undervoltage, e.g. by

charging the battery or restarting the engine. X Engage or release the electric parking brake. If it remains impossible to apply or release the electric parking brake: X Switch off the ignition and turn it back on. X Engage or release the electric parking brake. If the electric parking brake still cannot be released: X Consult a qualified specialist workshop. The display message is only shown while the vehicle is in motion. The yellow ! warning lamp lights up and the red F (USA only)/ ! (Canada only) indicator lamp flashes. It is not possible to apply the electric parking brake manually. X Shift the transmission to P. X Visit 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.

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Display messages $(USA only)J(Canada only) Check Brake Fluid Level

Check Brake Pad Wear mbrace Inoperative

PRE-SAFE Inoperative See Operator's Manual

Possible causes/consequences and M Solutions There is not enough brake fluid in the brake fluid reservoir. In addition, the $ (USA only)/J (Canada only) warning lamp lights up in the instrument cluster and a warning tone sounds. G WARNING The braking effect may be impaired. There is a risk of an accident. 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 Secure the vehicle against rolling away (Y page 179). X Consult a qualified specialist workshop. X Do not add brake fluid. This does not correct the malfunction.

The brake pads/linings have reached their wear limit. X Visit a qualified specialist workshop.

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.

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

Possible causes/consequences and M Solutions Vehicles without the Active Driving Assistance package: Adaptive Brake Assist is temporarily inoperative. Possible causes are: Rfunction is impaired due to heavy rain or snow. Rthe sensor in the bumper is 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.

RAMG vehicles: ESP® is deactivated. Rthe system is outside the operating temperature range. Rthe on-board voltage is too low. When the causes stated above no longer apply, the display message disappears. Adaptive Brake Assist is operational again. If the display message does not disappear: X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Secure the vehicle against rolling away (Y page 179). X Clean the bumpers (Y page 373). X Restart the engine. X AMG vehicles: reactivate ESP®(Y page 71).

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

Possible causes/consequences and M Solutions Vehicles with the Active Driving Assistance package: PRE-SAFE® Brake is temporarily inoperative. Possible causes are: Rfunction is impaired due to heavy rain or snow. Rthe sensors in the radiator grill and the bumper 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.

RAMG vehicles: ESP® is deactivated. Rthe system is outside the operating temperature range. Rthe on-board voltage is too low. When the causes stated above no longer apply, the display message disappears. PRE-SAFE® Brake is operational again. If the display message does not disappear: X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

PRE-SAFE Functions Limited See Operator's Manual

SRS Malfunction Service Required

X Secure the vehicle against rolling away (Y page 179). X Clean the sensors in the radiator grill and the bumper

(Y page 373).

X Restart the engine. X AMG vehicles: reactivate ESP®(Y page 71).

Vehicles without the Active Driving Assistance package: Adaptive Brake Assist is faulty. The distance warning function may also have failed. Vehicles with the Active Driving Assistance package: PRE-SAFE® Brake is faulty. BAS PLUS or the distance warning function may also have failed. X Visit a qualified specialist workshop. There is a malfunction in the SRS (Supplemental Restraint System). The 6 warning lamp also lights up in the instrument cluster. G WARNING The air bags or Emergency Tensioning Devices may either be triggered unintentionally or, in the event of an accident, may not be triggered. There is an increased risk of injury. X Visit a qualified specialist workshop. Further information on occupant safety (Y page 43).

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Display messages Front Left Malfunction Service Required  or Front Right Malfunction Service Required

Rear Left Malfunction Service Required  or Rear Right Malfunction Service Required

Rear Center Malfunction Service Required

Left Side Curtain Airbag Malfunction Service Required  or Right Side Curtain Airbag Malfunction Service Required

Possible causes/consequences and M Solutions SRS has malfunctioned at the front on the left or right. The 6
warning lamp also lights up in the instrument cluster. G WARNING The air bags or Emergency Tensioning Devices may either be triggered unintentionally or, in the event of an accident, may not be triggered. There is an increased risk of injury. X Visit a qualified specialist workshop. SRS has malfunctioned at the rear on the left or right. The 6
warning lamp also lights up in the instrument cluster. G WARNING The air bags or Emergency Tensioning Devices may either be triggered unintentionally or, in the event of an accident, may not be triggered. There is an increased risk of injury. X Visit a qualified specialist workshop. SRS has malfunctioned at the rear center. The 6 warning lamp also lights up in the instrument cluster. G WARNING The air bags or Emergency Tensioning Devices may either be triggered unintentionally or, in the event of an accident, may not be triggered. There is an increased risk of injury. X Visit a qualified specialist workshop. There is a malfunction in the left-hand or right-hand window curtain air bag. The 6 warning lamp also lights up in the instrument cluster. G WARNING The left or right window curtain air bag may either be triggered unintentionally or, in the event of an accident, may not be triggered. There is an increased risk of injury. X Visit a qualified specialist workshop.

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Display messages Front Passenger Airbag Enabled See Operator's 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. or

Rthe front-passenger seat is unoccupied. The system may detect objects or forces applying additional weight on the seat. G WARNING The air bag may deploy unintentionally. There is an increased risk of injury. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Secure the vehicle against rolling away (Y page 179). X Switch the ignition off. X Open the front-passenger door. X Remove the child and the child restraint system from the front-

passenger 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.

X Observe the ^a indicator lamp in the center console and

the multifunction display and check the following:

Seat unoccupied and ignition switched on: Rthe ^a indicator lamp must light up and remain lit. When the indicator lamp is on, OCS (Occupant Classification System) has disabled the front-passenger air bag (Y page 48). Rthe Front Passenger Airbag Enabled See Operator's Manual or Front Passenger Airbag Disabled See Operator's Manual display messages must not be shown in the multifunction display.

X Wait for a period of at least 60 seconds until the necessary

system checks have been completed.

X Make sure that the display messages do not appear in the

multifunction display.

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Display messages

Front Passenger Airbag Disabled See Operator's Manual

Possible causes/consequences and M Solutions If these conditions are fulfilled, the front-passenger seat can be occupied again. Whether the ^a 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.

The front-passenger air bag is disabled during the journey, even though: Ran adult

or

Ra 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. G WARNING The front-passenger air bag does not deploy during an accident. There is an increased risk of injury. X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Secure the vehicle against rolling away (Y page 179). X Switch the ignition off. X Have the occupant get out of the vehicle. X Keep the seat unoccupied, close the front-passenger door and

switch on the ignition.

X Observe the ^a indicator lamp in the center console and

the multifunction display and check the following:

Seat unoccupied and ignition switched on: Rthe ^a indicator lamp must light up and remain lit. When the indicator lamp is on, OCS has disabled the front-passenger air bag (Y page 48). Rthe Front Passenger Airbag Enabled See Operator's Manual or Front Passenger Airbag Disabled See Operator's Manual display messages must not be shown in the multifunction display.

X Wait for a period of at least 60 seconds until the necessary

system checks have been completed.

X Make sure that the display messages do not appear in the

multifunction display.

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295

Display messages

Possible causes/consequences and M Solutions If these conditions are fulfilled, the front-passenger seat can be occupied again. Whether the ^a 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.

Lights i Display messages about LEDs:

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

(Y page 129).

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 129).

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

Check Trailer Left Turn Signal or Check Trailer Right Turn Signal Check Rear Left Turn Signal or Check Rear Right Turn Signal

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

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

(Y page 129).

or X Visit a qualified specialist workshop.

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Display messages Check Front Left Turn Signal or Check Front Right Turn Signal Check Left Mirror Turn Signal or Check Right Mirror Turn Signal

Check Center Brake Lamp

Check Left Brake Lamp or Check Right Brake Lamp

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

Possible causes/consequences and M Solutions The front left-hand or front right-hand turn signal is defective. X Check whether you are permitted to replace the bulb yourself

(Y page 129).

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 replace the bulb yourself

(Y page 129).

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

(Y page 129).

or X Visit a qualified specialist workshop.

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

(Y page 129).

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 replace the bulb yourself

(Y page 129).

or X Visit a qualified specialist workshop.

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

(Y page 129).

or X Visit a qualified specialist workshop.

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297

Possible causes/consequences and M Solutions The left or right-hand license plate lamp is defective. X Check whether you are permitted to replace the bulb yourself

(Y page 129).

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 replace the bulb yourself

(Y page 129).

or X Visit a qualified specialist workshop.

The backup lamp is defective. X Check whether you are permitted to replace the bulb yourself

(Y page 129).

or X Visit a qualified specialist workshop.

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

(Y page 129).

or X Visit a qualified specialist workshop.

The left or right-hand tail lamp is defective. or The rear left or right side marker lamp is defective. X Check whether you are permitted to replace the bulb yourself

(Y page 129).

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

(Y page 129).

or X Visit a qualified specialist workshop.

Display messages License Plate Lamp

Check Front Left Parking Lamp or Check Front Right Parking Lamp Backup Light

Check Front Left Sidemarker Lamp or Check Front Right Sidemarker Lamp Check Left Tail Lamp or Check Right Tail Lamp

Check Left Daytime Running Light or Check Right Daytime Running Light

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Display messages Active Headlamps Inoperative Malfunction See Operator's Manual

Auto Lamp Function Inoperative Switch Off Lights Adaptive Highbeam Assist Inoperative Adaptive Highbeam Assist Currently Unavailable See Operator's Manual

Possible causes/consequences and M Solutions The active light function is defective. X Visit a qualified specialist workshop.

The exterior lighting is defective. X Visit a qualified specialist workshop. Vehicles with trailer tow hitch: a fuse may have blown. X Check the fuses (Y page 394). X If necessary, replace the blown fuse. Observe the warning notes. If the display message continues to be displayed: X Visit a qualified specialist workshop. The light sensor is defective. X Visit a qualified specialist workshop.

The lights are still switched on when you leave the vehicle. A warning tone also sounds. X Turn the light switch to Ã.

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

Adaptive Highbeam Assist is deactivated and temporarily inoperative. Possible causes are: Rthe windshield in the camera's field of vision is dirty. Rvisibility is impaired due to heavy rain, snow or fog. X Clean the windshield. If the system detects that the camera is fully operational again, the Adaptive Highbeam Assist Now Available message is displayed. Adaptive Highbeam Assist is operational again.

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Engine Display messages Check Coolant Level See Operator's Manual

Possible causes/consequences and M Solutions The coolant level is too low. ! Avoid making long journeys with too little coolant in the engine

cooling system. The engine will otherwise be damaged.

X Add coolant, observing the warning notes before doing so

(Y page 367).

X If coolant needs to be added more often than usual, have the

engine coolant system checked at a qualified specialist workshop.

? The fan motor is faulty.

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

qualified specialist workshop.

Coolant Too Hot Stop Vehicle Turn Engine Off

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

mountainous terrain, and stop-and-go traffic.

The coolant is too hot. A warning tone also sounds. G WARNING Do not drive when your engine is overheated. This can cause some fluids which may have leaked into the engine compartment to catch fire. Steam from the overheated engine can also cause serious burns which can occur just by opening the hood. There is a risk of injury. X Pull over and stop the vehicle safely and switch off the engine,

paying attention to road and traffic conditions.

X Secure the vehicle against rolling away (Y page 179). X Wait until the engine has cooled down. X Make sure that the air supply to the engine radiator is not

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

X Do not start the engine again until the display message goes out

and the coolant temperature is under 248 ‡ (120 †). Otherwise, the engine could be damaged.

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

workshop immediately.

Under normal operating conditions and with the specified coolant level, the coolant temperature may rise to 248 ‡ (120 †).

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Display messages # The battery is not being charged.

Possible causes/consequences and M Solutions

A warning tone also sounds. Possible causes are: Ra defective 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 not damaged: X Visit a qualified specialist workshop.

Check Engine Oil At Next Refueling

The engine oil level has dropped to the minimum level. A warning tone also sounds. X Check the oil level when next refueling, at the latest

(Y page 366).

X If necessary, add engine oil (Y page 366). X Have the engine checked at a qualified specialist workshop if

engine oil needs to be added more often than usual.

! Avoid long journeys with too little engine oil. The engine will

otherwise be damaged.

Information on approved engine oils can be obtained from any qualified specialist workshop or on the Internet at http:// www.mbusa.com (USA only).

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Display messages Check Engine Oil Level (Add 1 quart)

Possible causes/consequences and M Solutions AMG vehicles: the engine oil level is too low. X Check the oil level when next refueling, at the latest

(Y page 366).

X If necessary, add engine oil (Y page 366). X Have the engine checked at a qualified specialist workshop if

engine oil needs to be added more often than usual.

! Avoid long journeys with too little engine oil. The engine will

otherwise be damaged.

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

Fuel Level Low C There is only a very small amount of fuel in the fuel tank.

Gas Cap Loose

Ultra Low-sulfur Diesel Fuel Only

X Refuel at the nearest gas station without fail. 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. If the fuel filler cap is not correctly closed: X Close the fuel filler cap. If the fuel filler cap is correctly closed: X Visit a qualified specialist workshop. Vehicles with a diesel engine: the fuel level has fallen below the reserve range. X Refuel at the nearest gas station. X Only use commercially available vehicular ULTRA-LOW SULFUR

HIGHWAY DIESEL FUEL (ULSD, 15ppm SULFUR MAXIMUM).

¸ Replace Air Filter

Vehicles with a diesel engine: the engine air filter is dirty and must be replaced. X Visit a qualified specialist workshop.

Check Fuel Filter

Vehicles with a diesel engine: there is water in the fuel filter. The water must be drained off. X Visit a qualified specialist workshop.

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