2008 Mercedes-benz C Class 4matic Owners Manual

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Possible cause/consequence ABS and ESP® are not available due to a malfunction. BAS and the hill start assist are also switched off. It is possible that the self-diagnostics have not yet been completed. The brake system still functions normally. The ABS and ESP® were deactivated because of in- sufficient power supply. The charging voltage has fallen below 10 volts. BAS and the hill start assist are also deactivated. The brake system still functions normally but without the ABS and ESP® available. ABS and ESP Inoperative See Operator’s Manual ABS and ESP® are switched off due to a malfunction. BAS and the hill start assist are also switched off. The brake system still functions normally but without the ABS and ESP® available. Practical hints What to do if …? Possible solution 왘 Drive a short distance with gentle turns above a speed of 12 mph (20 km/h). The message disappears when ABS and ESP® are again available. When the voltage is above this value again, the ABS and ESP® are operational again and the message in the multifunction display should disappear. If the message in the multifunction display does not disappear: 왘 Have the generator (alternator) and the battery checked. 왘 Continue driving with added caution. Wheels may lock during hard braking, reducing steering capability. 왘 Have the system checked at an authorized Mercedes-Benz Center as soon as possible. Failure to follow these instructions increases the risk of an accident. 389 Practical hints What to do if …? Display Cruise control - - - mph (USA only) Cruise control - - - km/h (Canada only) Cruise Control and Speedtronic Inoperative Check, Tire Pressure Then Restart Run Flat Indicator (Canada only) Run Flat Indicator Inoperative (Canada only) 390 Possible cause/consequence You have tried to switch on cruise control below a speed of 20 mph (30 km/h). Possible solution 왘 If traffic conditions allow, drive faster than 20 mph (30 km/h) and save the speed. The automatic transmission* is in position P, R or N. 왘 Move the gear selector lever to position D (컄 page 140). ESP® is switched off. The system is overheated. Cruise control is malfunctioning. In addition a warning chime sounds. 왘 Switch on ESP® (컄 page 64). 왘 Wait until the system cools down. 왘 Have the cruise control checked at an authorized Mercedes-Benz Center. There was a warning message about a loss in tire inflation pressure and the Run Flat In- dicator has not been restarted yet. 왘 Make sure the correct tire inflation pressure is set for each tire (컄 page 339). 왘 Then restart the Run Flat Indicator (컄 page 343). Run Flat Indicator is malfunctioning. 왘 Have the Run Flat Indicator checked at an authorized Mercedes-Benz Center. Practical hints What to do if …? Possible solution 왘 Carefully bring the vehicle to a halt, avoiding abrupt steering and braking maneuvers. Observe the traffic situation around you. 왘 Check and adjust the tire inflation pressure as required (컄 page 339). 왘 If necessary, change the wheel (컄 page 440). 왘 Restart the Run Flat Indicator after adjusting the tire inflation pressure values (컄 page 343). Display Check Tire Pressure Soon (Canada only) Possible cause/consequence The Run Flat Indicator indicates that the pressure is too low in one or more tires. Warning! Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You may lose control of the vehicle. Continued driving with a flat tire will cause excessive heat build-up and possibly a fire. 391 Practical hints What to do if …? Display Shift to P Shift to P or N To Start Engine Tire Press. Monitor Inoperative (USA only) Wheel Sensors Error Tire Pressure Monitor Inoperative (USA only) Tire Press. Monitor Currently Unavailable (USA only) 392 Possible cause/consequence You have turned off the engine with the KEYLESS-GO* start/stop button (Canada only) in gear selector lever position N and opened the driv- er’s door. or You have attempted to switch off the engine with the KEYLESS-GO* start/stop button (Canada only) while the gear selector lever was in position R or D. You have attempted to start the engine while the au- tomatic transmission* was set to position R or D. The TPMS is malfunctioning. Possible solution 왘 Place the gear selector lever in position P. 왘 Move the gear selector lever to position P or N (컄 page 140). 왘 Have the TPMS checked at an authorized Mercedes-Benz Center. There are wheels without appropriate wheel sensors mounted (e.g. winter tires). 왘 Have the TPMS checked at an authorized Mercedes-Benz Center. The TPMS is unable to monitor the tire pressure due to a nearby radio interference source. 왘 Have the wheel sensors installed at an autho- rized Mercedes-Benz Center. 왘 As soon as the causes of the malfunction have been removed, the TPMS automatically be- comes active again after a few minutes driving. Practical hints What to do if …? Display Front Passenger Airbag Disabled See Operator’s Manu- al Possible cause/consequence Possible solution Front passenger front air bag is deactivated while driving even though an adult or someone larger than a small individual is occupying the front passenger seat. Forces acting on the seat may make the system sense a decrease in weight. Stop the vehicle in a safe location as soon as possible and check the front passenger seat for the following: 왘 Switch off the ignition (컄 page 82). 왘 Have the front passenger vacate the seat and exit the vehicle. 왘 Keep the seat unoccupied, close the front passenger door and switch on the ignition (컄 page 82). Monitor the 5/ indicator lamp right of the instrument cluster (컄 page 45) and the multifunction display in the instrument cluster (컄 page 151) for the following: (Continued on next page) 393 Practical hints What to do if …? Display Front Passenger Airbag Disabled See Operator’s Manu- al Possible cause/consequence Possible solution With the seat unoccupied and the ignition switched on (컄 page 82), 앫 the 5/ indicator lamp right of the instrument cluster should il- luminate and remain illuminated, indicating that the OCS (컄 page 41) has deactivated the air bag. 앫 the message Front Passenger Airbag Enabled See Operator’s Man- ual or the message Front Passenger Airbag Disabled See Opera- tor’s Manual should not appear in the multifunction display at any time the seat is unoccupied. Wait at least 60 seconds for the system to com- plete the necessary check cycles and to make sure neither message ap- pears in the multifunction display. If above conditions are met, you can occupy the front passenger seat again. Depending on the front passenger classification sensed by the OCS (컄 page 41), the5/ indicator lamp will remain illuminated or go out. If above conditions are not met, the system is not working properly. Have the system checked as soon as possible at an authorized Mercedes-Benz Center. Warning! If the 5/ indicator lamp remains illuminated 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. 394 Practical hints What to do if …? Display Front Passenger Airbag Enabled See Operator’s Manu- al Possible cause/consequence Possible solution Front passenger front air bag is activated while driving even though a child, small individual, or object below the system’s weight threshold is on the front passenger seat, or the front pas- senger seat is empty. Objects on the seat or forces acting on the seat may make the system sense supplemental weight. Stop the vehicle in a safe location as soon as possible and check the front passenger seat for the following: 왘 Switch off the ignition (컄 page 82). 왘 Remove child and child restraint from front passenger seat and properly secure the child in rear seat employing the child restraint if necessary. 왘 Make sure no objects which apply forces to the seat are present (e.g. objects such as books, briefcases etc. lodged behind or around the seat, head restraints pushing against roof, etc.). The system may recog- nize such forces as supplemental weight and sense that an occupant on the front passenger seat is of a greater weight than actually present. 왘 Keep the seat unoccupied, close the front passenger door and switch on the ignition (컄 page 82). Monitor the 5/ indicator lamp right of the instrument cluster (컄 page 45) and the multifunction display in the instrument cluster (컄 page 151) for the following: (Continued on next page) 395 Practical hints What to do if …? Display Front Passenger Airbag Enabled See Operator’s Manu- al Possible cause/consequence Possible solution With the seat unoccupied and the ignition switched on (컄 page 82), 앫 the 5/ indicator lamp right of the instrument cluster should il- luminate and remain illuminated, indicating that the OCS (컄 page 41) has deactivated the air bag. 앫 the message Front Passenger Airbag Enabled See Operator’s Man- ual or the message Front Passenger Airbag Disabled See Opera- tor’s Manual should not appear in the multifunction display at any time the seat is unoccupied. Wait at least 60 seconds for the system to com- plete the necessary check cycles and to make sure neither message ap- pears in the multifunction display. If above conditions are met, you can occupy the front passenger seat again. Depending on the front passenger classification sensed by the OCS (컄 page 41), the 5/ indicator lamp will remain illuminated or go out. If above conditions are not met, the system is not working properly. Have the system checked as soon as possible at an authorized Mercedes-Benz Center. Warning! If the 5/ indicator lamp remains illuminated 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. 396 Symbol messages Display - ABS and ESP Currently Unavailable See Operator’s Manual Practical hints What to do if …? Possible cause/consequence ABS and ESP® are not available due to a malfunction. BAS and the hill start assist are also switched off. It is possible that the self-diagnostics have not yet been complet- ed. The brake system still functions normally. The ABS and ESP® were deactivated be- cause of insufficient power supply. The charging voltage has fallen below 10 volts. BAS and the hill start assist are also deacti- vated. The brake system still functions normally but without the ABS and ESP® available. Possible solution 왘 Drive a short distance with gentle turns above a speed of 12 mph (20 km/h). The message disappears when ABS and ESP® are again available. When the voltage is above this value again, the ABS and ESP® are operational again and the message in the multifunction display should disappear. If the message in the multifunction display does not disappear: 왘 Have the generator (alternator) and the battery checked. 397 Practical hints What to do if …? Display - ABS and ESP Inoperative See Operator’s Manual Possible cause/consequence ABS and ESP® are switched off due to a malfunction. BAS and the hill start assist are also switched off. The brake system is still functioning nor- mally but without the ABS available. Possible solution 왘 Continue driving with added caution. Wheels may lock during hard braking, re- ducing steering capability. 왘 Have the system checked at an authorized Mercedes-Benz Center as soon as possi- ble. Failure to follow these instructions increases the risk of an accident. 398 Display Possible cause/consequence The battery is no longer charging. Possible causes: 앫 alternator malfunctioning 앫 broken poly-V-belt 2 Check Brake Pad Wear There is a malfunction in the electronic sys- tem. The brake pads have reached their wear limit. ! Brake pad thickness must be visually checked by a qualified technician at the intervals specified in the Maintenance Booklet. Practical hints What to do if …? Possible solution 왘 Stop the vehicle immediately in a safe loca- tion and check the poly-V-belt. If it is broken: 왘 Do not continue to drive. Otherwise the en- gine will overheat due to an inoperative water pump which may result in damage to the en- gine. 왘 Notify an authorized Mercedes-Benz Center. If it is intact: 왘 Drive immediately to the nearest authorized Mercedes-Benz Center. 왘 Have the system checked at an authorized Mercedes-Benz Center as soon as possible. 왘 Have the brake pads replaced as soon as possible. 399 Practical hints What to do if …? Display ; Check (USA only) (Canada only) Brake Fluid Level Possible cause/consequence There is insufficient brake fluid in the reser- voir. Possible solution Risk of accident! 왘 Carefully stop the vehicle in a safe location or as soon as it is safe to do so. 왘 Depress the parking brake (컄 page 134). 왘 Contact an authorized Mercedes-Benz Cen- ter. 왘 Do not add brake fluid! This will not solve the problem. ! If you find that the brake fluid in the brake fluid reservoir has fallen to the minimum mark or below, have the brake system checked for brake pad thickness and leaks. Warning! Driving with the message Check Brake Fluid Level displayed can result in an ac- cident. Have your brake system checked im- mediately. 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 serious- ly burned. 400 Parking Brake Display ; Release (USA only) (Canada only) (USA only) (Canada only) EBR, ABS, and ESP Inoperative See Operator’s Manu- al Practical hints What to do if …? Possible cause/consequence You are driving with the parking brake set. 왘 Release the parking brake (컄 page 130). Possible solution EBP, ABS and ESP® are switched off due to a malfunction. BAS and the hill start assist are also switched off. The brake system still functions normally but without the ABS and ESP® available. 왘 Continue driving with added caution. Wheels may lock during hard braking, re- ducing steering capability. 왘 Have the system checked at an authorized Mercedes-Benz Center as soon as possible. Failure to follow these instructions increases the risk of an accident. 401 Practical hints What to do if …? Display • Coolant Low Stop Vehicle! Turn Engine Off Possible cause/consequence The coolant is too hot. Possible solution 왘 Stop the vehicle in a safe location or as soon as it is safe to do so and immediately turn off the engine. 왘 Only start the engine again after the message disappears. You could otherwise damage the engine. 왘 Observe the coolant temperature gauge in the instrument cluster (컄 page 26). 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. ! The engine should not be operated with the coolant temperature above 248°F (120°C). Do- ing so may cause serious engine damage which is not covered by the Mercedes-Benz Limited Warranty. During severe operating conditions, e.g. stop-and-go traffic, the coolant tem- perature may rise close to 248°F (120°C). Warning! 앫 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. 앫 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. 402 Display • Coolant Low Possible cause/consequence The poly-V-belt could be broken. Stop Vehicle! Turn Engine Off Practical hints What to do if …? Possible solution 왘 Stop the vehicle in a safe location or as soon as it is safe to do so and immediately turn off the engine. 왘 Check the poly-V-belt. If it is broken: 왘 Do not continue to drive. Otherwise the en- gine will overheat due to an inoperative water pump which may result in damage to the en- gine. 왘 Notify an authorized Mercedes-Benz Center. If it is intact: 왘 Do not continue to drive the vehicle with this message displayed. Doing so could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty. 왘 Observe the coolant temperature gauge in the instrument cluster (컄 page 26). (Continued on next page) 403 Practical hints What to do if …? Display • Coolant Low Stop Vehicle! Turn Engine Off Possible cause/consequence Possible solution 왘 Restart the engine. If this message disappears from the multi- function display: 왘 Drive immediately to the nearest autho- rized Mercedes-Benz Center. If this message does not disappear from the multifunction display: 왘 Call Roadside Assistance. • The cooling fan for the coolant is malfunc- tioning. 왘 Observe the coolant temperature gauge in the instrument cluster (컄 page 26). 왘 Have the fan replaced as soon as possible. 404 Practical hints What to do if …? Display B Check Coolant Level See Operator’s Manu- al Possible cause/consequence The coolant level is too low. Possible solution 왘 Add coolant (컄 page 329). 왘 If you have to add coolant frequently, have the cooling system checked at an autho- rized Mercedes-Benz Center. 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. ! Do not ignore the low engine coolant level warning. Extended driving with the message and symbol displayed may cause serious engine damage not covered by the Mercedes-Benz Lim- ited Warranty. Do not drive without a sufficient amount of cool- ant in the cooling system. The engine will over- heat, causing major engine damage. 405 Practical hints What to do if …? Display 4 Gas Cap Loose Possible cause/consequence You are driving with one or more doors open. The display symbol shows you which doors are open. A loss of pressure has been detected in the fuel system. The fuel cap may not be closed properly or the fuel system may be leaky. Reserve Fuel Level The fuel level has gone below the reserve mark. You are driving with the hood open. Possible solution 왘 Close the doors. 왘 Check the fuel cap (컄 page 322). If it is not closed properly: 왘 Close the fuel cap. If it is closed properly: 왘 Have the fuel system checked at an autho- rized Mercedes-Benz Center. Refuel at the next gas station (컄 page 322). 왘 Stop your vehicle as soon as it is safe to do so. 왘 Close the hood (컄 page 326). There is otherwise danger of an accident. 406 Display I Key Not Detected Possible cause/consequence The SmartKey with KEYLESS-GO* (Canada only) is not recognized while the engine is running because the SmartKey with KEYLESS-GO* (Canada only) is not in the vehicle. The SmartKey with KEYLESS-GO* (Canada only) is not recognized while the engine is running because there is strong radio-fre- quency interference. I Key Not Detected The SmartKey with KEYLESS-GO* (Canada only) is momentarily not recognized. Practical hints What to do if …? Possible solution 왘 Stop the vehicle in a safe location or as soon as it is safe to do. 왘 Search for the SmartKey. Otherwise the vehicle cannot be centrally locked nor can the engine be started again after the engine is stopped. 왘 Stop the vehicle in a safe location or as soon as it is safe to do. 왘 Remove KEYLESS-GO* button (Canada only) from the starter switch (컄 page 83). 왘 Operate the vehicle with the SmartKey in the starter switch. 왘 Change the position of the SmartKey in the vehicle. 왘 If necessary, operate vehicle using SmartKey with KEYLESS-GO* (Canada only) in starter switch under KEYLESS-GO* button (Canada only) (컄 page 83). 407 Practical hints What to do if …? Display I Replace Key Battery Key Detected In Vehicle Obtain A New Key Remove "Start" Button And Insert Key I Close Doors To Lock Vehicle Key Does Not Belong to Vehicle Don’t Forget Your Key 408 Possible cause/consequence The batteries in the SmartKey with KEYLESS-GO* are discharged. A SmartKey with KEYLESS-GO* (Canada only) left in the vehicle was recognized while locking the vehicle from the outside. The SmartKey with KEYLESS-GO* (Canada only) must be replaced. The KEYLESS-GO* system (Canada only) is malfunctioning. You wanted to lock the vehicle but not all doors were closed. You have insert an incorrect key in the start- er switch. This display appears (for a maximum of 60 seconds) if the driver’s door is opened with the engine turned off and no SmartKey in the starter switch. This message is only a reminder. Possible solution 왘 Replace the batteries (컄 page 428). 왘 Take the SmartKey with KEYLESS-GO* out of the vehicle. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. 왘 Remove KEYLESS-GO* button (Canada only) from the starter switch (컄 page 83). 왘 Operate the vehicle with the SmartKey in the starter switch. 왘 Close doors and lock vehicle again. 왘 Remove key and insert the correct key. 왘 Take the SmartKey or SmartKey with KEYLESS-GO* (Canada only) with you when leaving the vehicle. Display I Take Your Key From Ignition . AUTO Lamp Function Inoperative Possible cause/consequence You have forgotten to remove the SmartKey. The light sensor is malfunctioning. Daytime driving lamps are switched on. Check Center Brake Lamp Check Left Brake Lamp Check Right Brake Lamp The high mounted brake lamp is malfunc- tioning. This message will only appear if all light emitting diodes have stopped working. The left brake lamp is malfunctioning. The right brake lamp is malfunctioning. Practical hints What to do if …? Possible solution 왘 Remove the SmartKey from the starter switch. 왘 In the instrument cluster control system, set lamp operation to manual mode. 왘 Switch on headlamps using the exterior lamp switch. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. 왘 Replace the bulb as soon as possible (컄 page 436). 왘 Replace the bulb as soon as possible (컄 page 436). 409 Possible cause/consequence The left-hand corner-illuminating lamp is malfunctioning. The right-hand corner-illuminating lamp is malfunctioning. The left front fog lamp is malfunctioning. Possible solution 왘 Contact an authorized Mercedes-Benz Center as soon as possible. 왘 Contact an authorized Mercedes-Benz Center as soon as possible. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The right front fog lamp is malfunctioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The left rear fog lamp is malfunctioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The left high beam lamp is malfunctioning. 왘 Replace the bulb as soon as possible (컄 page 433). The right high beam lamp is malfunctioning. 왘 Replace the bulb as soon as possible (컄 page 433). Practical hints What to do if …? Display . Check Left Cornering Light Check Right Cornering Light Check Left Fog Lamp Check Right Fog Lamp Check Rear Left Fog Lamp Check Left High Beam Check Right High Beam 410 Practical hints What to do if …? Display . Check Left License Plate Lamp Check Right License Plate Lamp Check Left Low Beam Check Right Low Beam Check Front Left Parking Lamp Check Front Right Parking Lamp Check Left Reverse Lamp Check Right Reverse Lamp Possible cause/consequence The left license plate lamp is malfunction- ing. The right license plate lamp is malfunction- ing. The left low beam lamp is malfunctioning. 왘 Contact an authorized Mercedes-Benz Cen- Possible solution 왘 Contact an authorized Mercedes-Benz Cen- 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. ter as soon as possible. ter as soon as possible. The right low beam lamp is malfunctioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The left front parking lamp is malfunction- ing. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The right front parking lamp is malfunction- ing. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The left reverse lamp is malfunctioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The right reverse lamp is malfunctioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. 411 Practical hints What to do if …? Display . Check Front Left Side Marker Lamp Check Front Right Side Marker Lamp Check Rear Left Side Marker Lamp Check Rear Right Side Marker Lamp Check Left Tail and Brake Lamps Check Right Tail and Brake Lamps 412 Possible cause/consequence The front left side marker lamp is malfunc- tioning. Possible solution 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The front right side marker lamp is malfunc- tioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The rear left side marker lamp is malfunc- tioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The rear right side marker lamp is malfunc- tioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The left tail lamp/brake lamp is malfunc- tioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The right tail lamp/brake lamp is malfunc- tioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. Practical hints What to do if …? Display . Check Left Tail Lamp Check Right Tail Lamp Check Front Left Turn Signal Check Front Right Turn Signal Check Rear Left Turn Signal Check Rear Right Turn Signal Possible cause/consequence The left tail lamp is malfunctioning. Possible solution 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The right tail lamp is malfunctioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The left front turn signal lamp is malfunc- tioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The right front turn signal lamp is malfunc- tioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The left rear turn signal lamp is malfunction- ing. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. The right rear turn signal lamp is malfunc- tioning. 왘 Contact an authorized Mercedes-Benz Cen- ter as soon as possible. 413 Possible cause/consequence The turn signal in the left exterior rear view mirror is malfunctioning. This message will only appear if all light emitting diodes have stopped working. The turn signal in the right exterior rear view mirror is malfunctioning. This message will only appear if all light emitting diodes have stopped working. You are getting out of the vehicle and the lights are still switched on. The exterior lamp switch is set to * and you have forgotten to take out the SmartKey. The parking lamps remain switched on. Possible solution 왘 Have the LEDs replaced as soon as possible. 왘 Have the LEDs replaced as soon as possible. 왘 Switch off the headlamps (컄 page 108). 왘 Switch off the headlamps (컄 page 108). or 왘 Remove the SmartKey from the starter switch. Practical hints What to do if …? Display . Check Left Mirror Turn Signal Check Right Mirror Turn Signal Switch Off Lights Turn Lights Off Or Remove Key 414 Practical hints What to do if …? Display ù Check Engine Oil At Next Refueling Possible cause/consequence The engine oil level has dropped to approx- imately the minimum level. Possible solution 왘 Check the engine oil level (컄 page 327) and add engine oil as required (컄 page 328). 왘 If you must add engine oil frequently, have the engine checked for possible leaks. ! The engine oil level warnings should not be ignored. Extended driving with the symbol dis- played could result in serious engine damage that is not covered by the Mercedes-Benz Limit- ed Warranty. When the message Check Engine Oil At Next Refueling appears while the engine is running and at operating temperature, the engine oil level has dropped to approx- imately the minimum level. When this occurs, the warning will first come on intermittently and then stay on if the oil level drops further. Visually check for oil leaks. If no obvious oil leaks are noted, continue to drive to the nearest service station where the engine oil should be topped to the required level with an approved oil specified in the Facto- ry Approved Service Products pamphlet. For information on approved engine oils, refer to the Factory Approved Service Products pamphlet (USA only) or contact an authorized Mercedes-Benz Center. 415 Practical hints What to do if …? Display = SRS Malfunction Service Required Front Left SRS Malfunction Service Required Front Right SRS Malfunction Service Required Rear Left SRS Malfunction Service Required Possible cause/consequence There is a malfunction in the supplemental restraint systems. The air bags or emergen- cy tensioning devices (ETDs) could deploy unexpectedly or fail to activate in an acci- dent. Components of the driver’s supplemental restraint system may not work properly. Components of the front passenger’s sup- plemental restraint system may not work properly. Components of the left rear passenger’s supplemental restraint system may not work properly. Possible solution 왘 Drive with added caution to the nearest authorized Mercedes-Benz Center. 왘 Drive with added caution to the nearest au- thorized Mercedes-Benz Center. 왘 Drive with added caution to the nearest au- thorized Mercedes-Benz Center. 왘 Drive with added caution to the nearest au- thorized Mercedes-Benz Center. Warning! In the event that 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 deployed when needed in an accident, which could re- sult in serious or fatal injury, or it might de- ploy unexpectedly and unnecessarily which could result in an accident and/or injury to you or to others. 416 Practical hints What to do if …? Display = Rear Center SRS Malfunction Service Required Rear Right SRS Malfunction Service Required Left Side Curtain Airbag Malfunction Service Required Right Side Curtain Airbag Malfunction Service Required Possible cause/consequence Components of the center rear passenger’s supplemental restraint system may not work properly. Components of the right rear passenger’s supplemental restraint system may not work properly. The left side window curtain air bag may not work properly. Possible solution 왘 Drive with added caution to the nearest au- thorized Mercedes-Benz Center. 왘 Drive with added caution to the nearest au- thorized Mercedes-Benz Center. 왘 Drive with added caution to the nearest au- thorized Mercedes-Benz Center. The right side window curtain air bag may not work properly. 왘 Drive with added caution to the nearest au- thorized Mercedes-Benz Center. Warning! In the event that 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 deployed when needed in an accident, which could re- sult in serious or fatal injury, or it might de- ploy unexpectedly and unnecessarily which could result in an accident and/or injury to you or to others. 417 Practical hints What to do if …? Display L Tele Aid Inoperative H Correct Tire Pressure (USA only) Tire Press. Warning Caution Tire Malfunction (USA only) Check Tire Pressure (USA only) Possible cause/consequence One or more main functions of the Tele Aid* system are malfunctioning. The tire pressure is too low in one or more tires. Possible solution 왘 Have the Tele Aid* system checked at an au- thorized Mercedes-Benz Center. 왘 Check and correct tire inflation pressure as required (컄 page 339). One or more tires are deflating. 왘 Carefully bring the vehicle to a halt, avoiding abrupt steering and braking maneuvers. 왘 If necessary, change the wheel (컄 page 440). The tire pressure in one or more tires is al- ready below the minimum value. 왘 Carefully bring the vehicle to a halt, avoiding abrupt steering and braking maneuvers. 왘 Check and adjust tire pressure as required (컄 page 339). 왘 If necessary, change the wheel (컄 page 440). Warning! Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You may lose control of the vehicle. Continued driving with a flat tire will cause excessive heat build-up and possibly a fire. 418 Display Ê W Check Washer Fluid Possible cause/consequence You are driving with the trunk open. The water level has dropped to approx. 1.1 US qts (1.0 l). Possible solution 왘 Close the trunk (컄 page 270). 왘 Add washer fluid (컄 page 330). Practical hints What to do if …? 419 Practical hints Where will I find ...? First aid kit i Check expiration dates and contents for completeness at least once a year and replace missing/expired items. Depending on the equipment configura- tion, the first-aid kit will be located either in the open storage department in the trunk or behind the cover panel on the left-hand side of the trunk. Vehicle jack, vehicle tool kit, luggage bowl, Minispare wheel The vehicle jack, Minispare wheel, vehicle tool kit, and the luggage bowl are stored in the compartment underneath the trunk floor. 1 Rotary handle 2 Cover 왘 Opening: Turn the handle 1 counter- clockwise. 왘 Fold the cover 2 downward. 왘 Remove the first aid kit. Vehicle tool kit The vehicle tool kit includes: 앫 One towing eye bolt 앫 One wheel wrench 앫 Collapsible wheel chock 앫 One pair of gloves 420 Practical hints Where will I find ...? 왘 Opening: Pull tab 5 in direction of Vehicle jack arrow 4 and open the vehicle tool kit cover. You can now remove the tools and accessories from vehicle tool kit 3. 왘 Closing: Store the tools and accessories in vehicle tool kit 3. 왘 Press the vehicle tool kit cover down until it engage. 왘 Installing: Slide the vehicle tool kit 3 into the recess in luggage bowl 6. 왘 Press vehicle tool kit 3 down until tab 1 engage in luggage bowl 6. 왘 Disengage trunk floor handle from up- per edge of trunk and lower trunk floor. ! To prevent damage, always disengage trunk floor handle from trunk lid and lower trunk floor before closing the trunk. Warning! The jack is designed exclusively for jacking up the vehicle at the jack take-up brackets built into both sides of the vehicle. To help avoid personal injury, use the jack only to lift the vehicle during a wheel change. Never get beneath the vehicle while it is supported by the jack. Keep hands and feet away from the area under the lifted vehicle. Always firmly depress the parking brake and block wheels before raising vehicle with jack. Do not release the parking brake while the vehicle is raised. Be certain that the jack is always vertical (plumb line) when in use, especially on hills. Always try to use the jack on level surface. Make sure the jack arm is fully seated in the jack take-up bracket. Always lower the vehicle onto sufficient capacity jackstands before working under the vehicle. 컄컄 421 1 Tab 2 Removing 3 Vehicle tool kit, jack and collapsible wheel chock 4 Opening 5 Tab 6 Luggage bowl 왘 Removing: Lift up trunk floor cover and engage trunk floor handle in upper edge of trunk. 왘 Pull tab 1 in direction of arrow 2 and lift up vehicle tool kit 3. You can now remove the vehicle tool kit 3 from luggage bowl 6. Practical hints Where will I find ...? 컄컄 Minispare wheel The Minispare wheel is stored in the com- partment underneath the trunk floor. Storage position 왘 Remove vehicle jack from its compartment. 왘 Turn crank handle in direction of arrow as far as it will go. Operational position 왘 Turn crank handle clockwise. Before storing the vehicle jack in its compartment: 앫 It should be fully collapsed. 앫 The handle must be folded in (storage position). 1 Vehicle tool kit, jack and collapsible wheel chock 2 Luggage bowl 3 Minispare wheel 422 Removing the Minispare wheel 왘 Remove vehicle tool kit 1 (컄 page 421). 왘 Turn luggage bowl 2 counterclock- wise and remove it. 왘 Remove Minispare wheel 3. Setting up the collapsible wheel chock The collapsible wheel chock serves to additionally secure the vehicle, e.g. while changing the wheel. Practical hints Where will I find ...? 왘 Tilt both plates upward 1. 왘 Fold the lower plate outward 2. 왘 Guide the tabs of the lower plate all the way into the openings of the base plate 3. For information on where to place wheel chocks when changing a wheel, see “Lift- ing the vehicle” (컄 page 441). 1 Tilt the plates upward 2 Fold the lower plate outward 3 Insert the plate 423 Practical hints Unlocking/locking in an emergency Unlocking the vehicle Removing the mechanical key Unlocking the driver’s door If you cannot unlock the vehicle with the SmartKey or KEYLESS-GO* (Canada only), unlock the driver’s door and the trunk us- ing the mechanical key. i Unlocking the vehicle with the mechanical key and opening the driver’s door or the trunk with the mechanical key will trigger the anti-theft alarm system (컄 page 66). To cancel the alarm, insert the SmartKey or SmartKey with KEYLESS-GO* (Canada only) in the starter switch. 424 1 Mechanical key locking tab 2 Mechanical key 왘 Move locking tab 1 in the direction of 1 Unlocking 2 Mechanical key arrow. 왘 Insert mechanical key 2 into the driv- 왘 Slide mechanical key 2 out of the er’s door lock until it stops. housing. 왘 Turn mechanical key 2 counterclock- wise to position 1. The locking knob moves up, the driver’s door is unlocked. 왘 Pull the door handle to open the driv- er’s door. Practical hints Unlocking/locking in an emergency Unlocking the trunk A minimum height clearance of 5.9 ft (1.90 m) is required to open the trunk lid. 1 Unlocking in an emergency 2 Mechanical key 왘 Insert the mechanical key 2 into the trunk lid lock until it stops. 왘 Turn mechanical key 2 all the way counterclockwise to position 2. The trunk opens. 왘 Turn the mechanical key 2 back and remove it from the trunk lid lock. Locking the vehicle If you cannot lock the vehicle with the SmartKey or KEYLESS-GO* (Canada only), do the following: 왘 Close the front passenger door, the rear doors and the trunk. 왘 Open the driver’s door. 왘 Press the central locking switch on the driver’s door (컄 page 81). The locking knobs of the front passen- ger door and the rear doors move down. If the vehicle battery is disconnected or drained: 왘 Press down the locking knobs of the front passenger door and the rear doors manually. ! The trunk lid swings open upwards automat- ically. Always make sure there is sufficient over- head clearance. 왘 Exit the vehicle. 왘 Close the driver’s door. 1 Locking 2 Mechanical key 왘 Use the mechanical key 2 to lock the vehicle from the outside via the driver's door. Turn the mechanical key 2 to position 1. 왘 The locking knob of the driver’s door moves down. The vehicle is locked. 왘 Check whether the doors and the trunk are locked. 왘 If necessary, lock the trunk with the mechanical key 2 (컄 page 272). 컄컄 425 Practical hints Unlocking/locking in an emergency 컄컄 i This procedure does not arm the anti-theft alarm system nor does it lock the fuel filler flap. Manually unlocking the transmission gear selector lever The selector lever can now move freely until reset to position P. Fuel filler flap 왘 Open the fuse box in the trunk (컄 page 458). In case of power failure, the transmission gear selector lever can be manually un- locked, e.g. to tow the vehicle. i The gear selector lever is locked again when moving it to position P. 1 Release cable 왘 Pull on the release cable 1. 왘 Open the fuel filler flap. 426 1 Selector lever cover 2 Unlocking mechanism 왘 Apply the parking brake firmly. 왘 Push the selector lever cover 1 to the left and pull it up and off. 왘 Push the unlocking mechanism 2 down and move the selector lever out of position P at the same time. 왔 Resetting activated head restraints If the active head restraints (front seats) have been triggered in an accident, the ac- tive head restraints must be reset. Other- wise, the active head restraints cannot offer any additional protection in the event of another rear-end collision. You can tell that the head restraints have been triggered when they have been moved forward and cannot be adjusted. Warning! When pushing back the head restraint cush- ion, take care that your fingers do not be- come caught between the head restraint cushion and the cover. Failing to do so may lead to injury. Warning! For safety reasons, have the active head restraints checked at an authorized Mercedes-Benz Center after a rear-end collision. 1 Fold back 2 Push back 3 Push down Practical hints Resetting activated head restraints 왘 Push the head restraint cushion by the bottom, back as far as it will go 2. 왘 Push the head restraint cushion down into the guide as far as it will go 3. 왘 Fold the head restraint cushion by the top, back firmly until it engages 1. i For your convenience, we recommend that you have this work carried out at an authorized Mercedes-Benz Center. 왘 Repeat this procedure on the active head restraints for second head re- straint. For information on active head restraints, see “Active head restraints” (컄 page 50). For information on head restraint adjust- ment, see “Adjusting rear head restraints” (컄 page 89). 427 Practical hints Replacing SmartKey batteries If the batteries in the SmartKey/SmartKey with KEYLESS-GO* are discharged, the ve- hicle can no longer be locked or unlocked. It is recommended to have the batteries re- placed at an authorized Mercedes-Benz Center. Batteries contain materials that can harm the environment if disposed of improperly. Recycling of batteries is the preferred method of disposal. Many states require sellers of batteries to accept old batteries for recycling. Warning! i When replacing batteries, make sure they are clean and free of lint. i When replacing batteries, always replace both batteries. The required replacement batter- ies are available at any authorized Mercedes-Benz Center. Replacement batteries: Lithium, type CR 2025 or equivalent. 왘 Remove the mechanical key from the SmartKey (컄 page 424). 1 Mechanical key 2 Battery compartment 왘 Insert mechanical key 1 into opening. 왘 Press mechanical key 1 in direction of arrow. The battery compartment is unlatched. 왘 Pull battery compartment 2 out of the housing. Batteries contain poisonous and corrosive substances. Therefore keep the batteries out of reach of children. If a battery is swallowed, seek medical help immediately. Warning! SmartKey batteries contain Perchlorate material, which may require special handling and regard for the environment. Check with your local government’s disposal guidelines. California residents, see http://www.dtsc.ca.gov/HazardousWaste /Perchlorate/index.cfm. 428 Practical hints Replacing SmartKey batteries 왘 Using a line-free cloth, insert new bat- teries 3 under contact springs 4 with the positive terminal (+) side facing up. 왘 Return battery compartment 2 into housing until it locks into place. 왘 Slide the mechanical key back into the SmartKey. 왘 Check the operation of the SmartKey or SmartKey with KEYLESS-GO*. 3 Batteries 4 Contact springs 왘 Pull out batteries 3. 429 Practical hints Replacing bulbs Safe vehicle operation depends on proper exterior lighting and signaling. It is there- fore essential that all bulbs and lamp assemblies are in good working order at all times. Correct headlamp adjustment is extremely important. Have headlamps checked and readjusted at regular intervals and when a bulb has been replaced. See an authorized Mercedes-Benz Center for headlamp adjustment. i If the headlamps or front fog lamps are fogged up on the inside as a result of high humidity, driving the vehicle a distance with the lights on should clear up the fogging. i Backup bulbs will be brought into use when lamps malfunction. Read and observe the mes- sages in the multifunction display (컄 page 413). 430 Bulbs Front lamps Lamp 1 Additional turn signal lamp 2 Turn signal lamp 3 Halogen headlamp: Low beam Bi-Xenon* headlamp: Low and high beam1 4 Halogen headlamp: High beam/high beam flasher Bi-Xenon* headlamp: High beam flasher 5 Front fog lamp Corner-illuminating front fog lamp* 6 Side marker lamp 7 Parking and standing lamp Type LED PY 21 W H7 (55 W) D1S-35 W H7 (55 W) H7 (55 W) H11 (55 W) H11 (55 W) W 5 W 2 x W 5 W-BV 1 Regarding vehicles with Bi-Xenon headlamps*, do not replace the Bi-Xenon bulbs yourself. Practical hints Replacing bulbs Rear lamps Lamp 8 High mounted brake lamp Type LED 9 Side marker a Turn signal lamp b Brake lamp, parking W 5 W PY 21 W 2 x P 21 W and standing lamp, tail lamp c Backup lamp d License plate lamps e Rear fog lamp (driver’s side only), Side marker P 21 W W 5 W P 21 W W 5 W 431 Practical hints Replacing bulbs Warning! Keep bulbs out of reach of children. Bulbs and bulb sockets can be very hot. Al- low the lamp to cool down before changing a bulb. Halogen lamps contain pressurized gas. A bulb can explode if you: 앫 touch or move it when hot 앫 drop the bulb 앫 scratch the bulb Wear eye and hand protection. Because of high voltage in Xenon lamps, it is dangerous to replace the bulb or repair the lamp and its components. We recommend that you have such work done by a qualified technician. 432 Notes on bulb replacement 앫 Only use 12 volt bulbs of the same type and with the specified watt rating. 앫 Switch lights off before changing a bulb to prevent short circuits. 앫 Always use a clean lint-free cloth when handling bulbs. 앫 Your hands should be dry and free of oil and grease. 앫 If the newly installed bulb does not come on, visit an authorized Mercedes-Benz Center. Have the LEDs and bulbs for the following lamps replaced at an authorized Mercedes-Benz Center. 앫 Additional turn signal lamps in the exte- rior rear view mirrors 앫 High mounted brake lamp 앫 Bi-Xenon* lamps 앫 Front fog lamps 앫 Front side marker lamps 앫 License plate lamps ! Do not replace the LEDs yourself. You could otherwise damage the LEDs or parts of the vehicle. Only have the LEDs replaced at an au- thorized Mercedes-Benz Center. Replacing bulbs for front lamps Before you start to replace a bulb for a front lamp, do the following first: 왘 Turn the exterior lamp switch to position M (컄 page 108). 왘 Open the hood (컄 page 325). Front lamps halogen-type 1 Bulb socket for turn signal lamp bulb 2 Housing cover for parking and standing lamp 3 Housing cover for parking and standing lamp 4 Housing cover for high beam headlamp 5 Housing cover for low beam headlamp 6 Bulb socket for parking and standing lamp bulb 7 Bulb holder of high beam bulb 8 Bulb holder of low beam bulb Low beam bulb 왘 Turn housing cover 5 counterclock- wise and remove it. 왘 Pull electric plug off the bulb. 왘 Remove wire clip from bulb holder 8 by pushing down and release from ar- restor hook. 왘 Pull the bulb at its socket out of bulb holder 8. Practical hints Replacing bulbs 왘 Insert the new bulb so that its socket locates in the recess of bulb holder 8 and is level to it. 왘 Fold wire clip back and press it down on bulb holder 8 to engage it in the ar- restor hook. 왘 Connect electric plug on the bulb. 왘 Align housing cover 5 and turn it clockwise. High beam bulb 왘 Turn housing cover 4 counterclock- wise and remove it. 왘 Turn bulb holder 7 with the bulb coun- terclockwise and remove it. 왘 Pull the bulb at its socket out of bulb holder 7. 왘 Insert the new bulb so that its socket locates in the recess of bulb holder 7 and is level to it. 왘 Reinsert bulb holder 7 with the bulb in the lamp and turn clockwise. 433 컄컄 Practical hints Replacing bulbs 컄컄 왘 Align housing cover 4 and turn it 왘 Place bulb socket 3 back into the Front lamps Bi-Xenon*-type Warning! Do not remove the cover 5 for the Bi-Xe- non* headlamp. Because of high voltage in Xenon lamps, it is dangerous to replace the bulb or repair the lamp and its components. We recommend that you have such work done by a qualified technician. lamp. Handle 2 must be in a horizon- tal line and mark 1 is on the upper part. 왘 Turn bulb socket 3 clockwise until it engage. Parking and standing lamp bulb 왘 Turn housing cover 2 or 3 counter- clockwise and remove it. 왘 Pull out bulb socket 6 with the bulb. 왘 Pull the bulb out of the bulb socket 6. 왘 Press the new bulb into bulb socket 6. 왘 Press bulb socket 6 back into the lamp. 왘 Align housing cover 2 or 3 and turn it clockwise. clockwise. Front turn signal lamp bulb 1 Mark 2 Handle 3 Bulb socket 왘 Turn bulb socket 3 with handle 2 counterclockwise and remove it. 왘 Press gently onto the bulb and turn counterclockwise out of bulb socket 3. 왘 Press the new bulb gently into bulb socket 3 and turn clockwise until it engages. 434

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2008 Mercedes-benz C Class 4matic Owners Manual