2013 Mercedes-benz C Class Owners Manual

setting. If the light switch is set to Ã, T or L, the brightness is dependent upon the brightness of the ambient light.

i The light sensor in the instrument cluster

automatically controls the brightness of the multifunction display. In daylight, the displays in the instrument cluster are not illuminated.

Switching the daytime running lamps on/ off i This function is not available in Canada. 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 Day Lights: function. If the Day Lights: have been switched on, the cone of light and the W symbol in the multifunction display are shown in red. X Press the a button to save the setting. Further information on daytime running lamps (Y page 117). Setting the brightness of the ambient lighting 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 the : or 9 button to select the Amb. Light +/-. function. You will see the selected setting.

X Press a to confirm. X Press the : or 9 button to adjust the brightness to any level from Off to Level 5 (bright). X Press the a or % button to save the

setting.

Setting the ambient lighting color 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 the : or 9 button to select the Ambient Light Color function. X Press a to confirm. X Press the : or 9 button to set the color to SOLAR, NEUTRAL or POLAR. X Press the a or % button to save the

setting.

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231

Activating/deactivating surround lighting and exterior lighting delayed switch-off 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 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.

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 117).

RExterior lighting delayed switch-off: the exterior lighting remains lit for 60seconds after the engine is switched off. If you close all the doors and the trunk lid, the exterior lighting goes off after 5 seconds.

i Depending on your vehicle's equipment,

when the surround lighting and delayed

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switch-off exterior lighting are on, the following light up: RParking lamps RLow-beam headlamps 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 Light. 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 Activating/deactivating the automatic door locking mechanism 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 Auto. Door Locks 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.

If you activate the Automatic Door Lock function, the vehicle is centrally locked above a speed of around 9 mph (15 km/h). For further information on the automatic locking feature, see (Y page 83). 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.

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 177) RBAS PLUS (Y page 67) RPRE-SAFE® Brake (Y page 72) RBlind Spot Assist (Y page 207) RActive Blind Spot Assist (Y page 211)

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Convenience Activating/deactivating the EASY- ENTRY/EXIT feature G WARNING When the EASY-ENTRY/EXIT feature adjusts the steering wheel, you and other vehicle occupants – particularly children – could become trapped. There is a risk of injury. While the EASY-ENTRY/EXIT feature is making adjustments, make sure that no one has any body parts in the sweep of the steering wheel. If somebody becomes trapped: Rpress one of the memory function position

buttons, or

Rmove the switch for steering wheel

adjustment in the opposite direction to that in which the steering wheel is moving.

The adjustment process is stopped.

X Press the = or ; button on the steering wheel to select the Settings 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 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 108). 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 with the locking feature on/off This function is only available on vehicles with the memory function (Y page 112). 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. 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.

: To fold the exterior mirrors in or out If you have switched on the Auto. Mirror Folding function and you fold in the exterior mirrors by pressing button :, the exterior

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

SETUP

: Drive program (C/SS+/M) ; ESP® mode (ON/OFF) or SPORT handling = Suspension tuning (COMFORT/SPORT/

mode (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.

or X Briefly press the AMG button on the center

console (Y page 191).

mirrors will not fold out automatically (Y page 110). 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 have selected 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.

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 151) X Press the = or ; button on the steering wheel to select the AMG menu.

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235

RACETIMER Displaying and starting RACETIMER

Starting a new lap

: Lap ; RACETIMER The RACETIMER is only intended for use on a closed race circuit. Do not use the function on public roads. 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.

: 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. Stopping the RACETIMER

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".

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Deleting all laps

Lap statistics

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.

Overall statistics

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

: 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.

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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 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. When you stop and park the vehicle, please observe the notes on: RHOLD function (Y page 186) RParking (Y page 167)

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.

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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 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. 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 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.

ABS, ESP®, BAS, PRE-SAFE®, the HOLD function and hill start assist are unavailable due to a malfunction. The $ (USA only)/J (Canada only), ÷, å and ! warning lamps in the instrument cluster also light up. 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.

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Display messages

÷ Inoperative See Operator's Manual

Possible causes/consequences and M Solutions 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 and hill start assist are unavailable due to a malfunction. 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 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 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.

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Display messages T! ÷ Inoperative See Operator's Manual

F(USA only)J(Canada only) Release Parking Brake $(USA only)J(Canada only) Check Brake Fluid Level

Possible causes/consequences and M Solutions 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. G WARNING The brake system continues to function normally, but without the functions listed above. The front and rear 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.

You are driving with the parking brake applied. A warning tone also sounds. X Release the parking brake.

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 167). X Consult a qualified specialist workshop. X Do not add brake fluid. This does not correct the malfunction.

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Display messages Check Brake Pad Wear mbrace Inoperative

PRE-SAFE Inoperative See Operator's Manual PRE-SAFE Functions Currently Limited See Operator's Manual

Possible causes/consequences and M Solutions The brake pads/linings have reached their wear limit. X Visit a qualified specialist workshop.

One or more main features of the mbrace system are malfunctioning. X Have the mbrace system checked immediately 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.

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

X Secure the vehicle against rolling away (Y page 167). X Clean the sensors in the radiator grill and the bumper

(Y page 315).

X Restart the engine. X AMG vehicles: reactivate ESP®(Y page 70).

PRE-SAFE® Brake is inoperative due to a malfunction. BAS PLUS or the distance warning signal may also have failed. X Visit a qualified specialist workshop.

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Display messages SRS Malfunction Service Required

Front Left Malfunction Service Required  or Front Right Malfunction Service Required

Rear Left Malfunction Service Required  or Rear Right Malfunction Service Required

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

Possible causes/consequences and M Solutions 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. For further information about SRS, see (Y page 41). 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. 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. 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. 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 Disabled See Operator's Manual

Possible causes/consequences and M Solutions The front-passenger air bag and front-passenger knee bag are deactivated during the journey, although: 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 front air bag and front passenger knee bag may not be triggered in the event of 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 167). 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 PASSENGER AIR BAG OFF indicator lamp in the center console and the multifunction display and check the following:

Seat unoccupied and ignition switched on: Rthe PASSENGER AIR BAG OFF indicator lamp must light up and remain lit. If the indicator lamp is on, OCS has disabled the front- passenger air bag and front-passenger knee bag (Y page 47). 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.

If these conditions are fulfilled, the front-passenger seat can be occupied again. Whether the PASSENGER AIR BAG OFF 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.

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Display messages

Front Passenger Airbag Enabled See Operator's Manual

Possible causes/consequences and M Solutions X Visit a qualified specialist workshop immediately. For further information about the Occupant Classification System, see (Y page 47). The front-passenger air bag and front-passenger knee bag are 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 front-passenger front air bag and front passenger knee bag may be triggered 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 167). 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 PASSENGER AIR BAG OFF indicator lamp in the center console and the multifunction display and check the following:

Seat unoccupied and ignition switched on: Rthe PASSENGER AIR BAG OFF indicator lamp must light up and

remain lit. If the indicator lamp is on, OCS (Occupant Classification System) has disabled the front-passenger air bag and front-passenger knee bag (Y page 47). Rthe Front Passenger Airbag Enabled See Operator's Manual or Front Passenger Airbag Disabled See

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Display messages

Possible causes/consequences and M Solutions 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.

If these conditions are fulfilled, the front-passenger seat can be occupied again. Whether the PASSENGER AIR BAG OFF 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. For further information about the Occupant Classification System, see (Y page 47).

Lights i Display messages about LEDs:

Possible causes/consequences and M Solutions The left or right-hand cornering light is defective. X Visit a qualified specialist workshop.

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 Check Rear Left Turn Signal or  Check Rear Right Turn Signal

The left or right-hand low-beam headlamp is defective. X Visit a qualified specialist workshop.

The rear left-hand or rear right-hand turn signal is defective. 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 Tail and Brake Lamps or  Check Right Tail and Brake Lamps Check Left High Beam or Check Right High Beam Rear Fog Lamp Check Front Left Parking Lamp or  Check Front Right Parking Lamp Check Left Reverse Lamp or Check Right Reverse Lamp

Possible causes/consequences and M Solutions The front left-hand or front right-hand turn signal is defective. X Visit a qualified specialist workshop.

The turn signal in the left-hand or right-hand exterior mirror is defective. X Visit a qualified specialist workshop.

The high-mounted brake lamp is faulty. X Visit a qualified specialist workshop.

The left or right-hand tail lamp/brake lamp is defective. X Visit a qualified specialist workshop.

The left or right-hand high beam is defective. X Visit a qualified specialist workshop.

The rear fog lamp is defective. X Visit a qualified specialist workshop.

The front left or front right parking or standing lamp is defective. X Visit a qualified specialist workshop.

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

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Display messages 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 Light System Inoperative Malfunction See Operator's Manual Auto Lamp Function Inoperative Switch Off Lights

Possible causes/consequences and M Solutions The left or right front side marker lamp is defective. X Visit a qualified specialist workshop.

The rear left or right side marker lamp is defective. X Visit a qualified specialist workshop.

The left-hand or right-hand daytime running lamp is faulty. 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.

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

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Display messages Adaptive Highbeam Assist Inoperative Adaptive Highbeam Assist Currently Unavailable See Operator's Manual

Possible causes/consequences and M Solutions 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.

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 308).

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 below 248 ‡ (120 †), drive to the

nearest qualified specialist workshop.

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

mountainous terrain, and stop-and-go traffic.

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Display messages Coolant Too Hot Stop Vehicle Turn Engine Off

Possible causes/consequences and M Solutions 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 167). 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 below 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 Secure the vehicle against rolling away (Y page 167). 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 Level 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 307).

X If necessary, add engine oil (Y page 308). 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:// bevo.mercedes-benz.com.

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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 307).

X If necessary, add engine oil (Y page 308). 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:// bevo.mercedes-benz.com. 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

Driving systems Display messages À Attention Assist: Take a Break!

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.

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.

À Attention Assist Inoperative

ATTENTION ASSIST is inoperative. X Visit a qualified specialist workshop.

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Display messages ¨ Vehicle Rising ¨ Vehicle Rising Please Wait

¨ Stop Vehicle Vehicle Too Low

¨ Malfunction

ë Off Radar Sensors Deactivated See Operator's Manual

Possible causes/consequences and M Solutions 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 Secure the vehicle against rolling away (Y page 167). X Wait until the display message disappears before pulling away. AIRMATIC is defective. A warning tone also sounds. X Do not drive at speeds above 50 mph (80 km/h). X Make only slight steering movements. Otherwise, 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. Depending on the malfunction, it may be possible to raise the vehicle.

X Visit a qualified specialist workshop. The AIRMATIC function is restricted. The vehicle's handling characteristics may be affected. X Do not drive at speeds above 50 mph (80 km/h). X Visit a qualified specialist workshop. The HOLD function is deactivated. The vehicle is skidding. A warning tone also sounds. X Reactivate the HOLD function later (Y page 186).

The radar sensor system is deactivated. X Switch on the radar sensor system (Y page 232).

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Possible causes/consequences and M Solutions Lane Keeping Assist or Active Lane Keeping 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. Rthere are no lane markings for a longer period. Rthe lane markings are worn, dark or covered, e.g. by dirt or snow. When the causes stated above no longer apply, the display message disappears. Lane Keeping Assist or Active Lane Keeping 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 167). X Clean the windshield.

Lane Keeping Assist or Active Lane Keeping Assist is defective. X Visit a qualified specialist workshop.

Display messages Lane Keeping Assist Currently Unavailable See Operator's Manual  or Active Lane Keeping Assist Currently Unavailable See Operator's Manual

Lane Keeping Assist Inoperative or  Active Lane Keeping Assist Inoperative

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Display messages Blind Spot Assist Currently Unavailable See Operator's Manual  or Active Blind Spot Assist Currently Unavailable See Operator's Manual

Blind Spot Assist Inoperative or  Active Blind Spot Assist Inoperative Park Assist Canceled

Possible causes/consequences and M Solutions Blind Spot Assist or Active Blind Spot Assist is temporarily inoperative. Possible causes are: Rthe sensors are dirty. Rfunction 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. When the causes stated above no longer apply, the display message disappears. Blind Spot Assist or Active Blind Spot 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 167). X Clean the sensors (Y page 315). X Restart the engine.

Blind Spot Assist or Active Blind Spot Assist is defective. The yellow 9 indicator lamps also light up in the exterior mirrors. X Visit a qualified specialist workshop. The driver's door is open and the driver's seat belt has not been fastened. X Repeat the parking process with the seat belt fastened and the

driver's door closed.

You have inadvertently touched the multifunction steering wheel while steering intervention was active. X While steering intervention is active, make sure that the

multifunction steering wheel is not touched unintentionally.

The vehicle has started to skid and ESP® has intervened. X Use Active Parking Assist again later (Y page 196).

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Display messages Park Assist Inoperative

Possible causes/consequences and M Solutions You have just carried out a large number of turning or parking maneuvers. Active Parking Assist will become available again after approximately ten minutes (Y page 196). X Pull over and stop the vehicle safely as soon as possible, paying

attention to road and traffic conditions.

X Switch off and restart the engine. If the display message continues to be displayed: X Visit a qualified specialist workshop. PARKTRONIC is defective. X Visit a qualified specialist workshop. The vehicle is parked. A warning tone also sounds. The display message disappears automatically.

Park Assist Finished DISTRONIC PLUS Off DISTRONIC PLUS has been deactivated (Y page 177). DISTRONIC PLUS Now Available

DISTRONIC PLUS is operational again after having been temporarily unavailable. You can now reactivate DISTRONIC PLUS (Y page 177).

If it was not deactivated by the driver, a warning tone also sounds.

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Display messages DISTRONIC PLUS Currently Unavailable See Operator's Manual

DISTRONIC PLUS Inoperative

DISTRONIC PLUS Suspended

DISTRONIC PLUS - - - mph

Possible causes/consequences and M Solutions DISTRONIC PLUS 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. Rthe system is outside the operating temperature range. Rthe on-board voltage is too low. A warning tone also sounds. When the causes stated above no longer apply, the display message disappears. DISTRONIC 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 167). X Clean the sensors in the radiator grill and the bumper

(Y page 315).

X Restart the engine. DISTRONIC PLUS is defective. The following may have also failed: RBAS PLUS (Brake Assist System PLUS) RPRE-SAFE® Brake 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 Remove your foot from the accelerator pedal. An activation condition for DISTRONIC PLUS is not fulfilled. X Check the activation conditions for DISTRONIC PLUS

(Y page 177).

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