2011 Mercedes-benz C Class Owners Manual

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X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Instr. Cluster submenu. X Press the a button to confirm. X Press the : or 9 button to select the Display Unit Speed-/Odometer. function. You will see the selected setting: km or miles. X Press the a button to save the setting. Switching the additional speedometer on/off Only vehicles with manual transmission have this function. The Additional Speedometer: function allows you to choose whether the multifunction display also shows the speed in km/h (USA) or mph (Canada). X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Instr. Cluster submenu. X Press the a button to confirm. X Press the : or 9 button to select the Additional Speedometer function. You will see the selected setting: On or Off. X Press the a button to save the setting. Selecting the permanent display function Only vehicles with automatic transmission have this function. The Permanent Display: function allows you to choose whether the multifunction display always shows the outside temperature or the speed in km/h (USA) or mph (Canada). X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Instr. Cluster submenu. X Press the a button to confirm. X Press : or 9 to select the Permanent Display: function. You will see the selected setting Outside Temperature or Speedometer [km/h]:. X Press the a button to save the setting. Time/date This submenu is only available on vehicles with Audio 20. To set the time and date on vehicles with COMAND, see the separate operating instructions. In the Time/date submenu, you can set the time and date. X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Time/date submenu. X Press the a button to confirm. X Press the : or 9 button to select Time: or Date:. The current time or date set is displayed. X Press a to change the setting. X Press the = or ; button to select the display you want to change: hour, minute, day, month, year. X Press the : or 9 button to set the selected display. X Press the a button to store the entry. Lights Switching the daytime running lamps on/ off This function is not available in Canada. If you have activated the Daytime Running Lights: function and the light switch is in the BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 180 Version: 3.0.3.6 180 Menus and submenus c position the daytime running lamps are switched on automatically when the engine is running. In the dark, the following also light up: Rthe low-beam headlamps Rthe parking lamps Rthe tail lamps Rthe license plate lamp Rthe side marker lamps X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Lights submenu. X Press the a button to confirm. X Press the : or 9 button to select the Daytime Running Lights: function. You will see the selected setting: Enabled or Disabled. X Press the a button to save the setting. Activating/deactivating surround lighting and exterior lighting delayed switch-off If you switch on the Locator Lighting: function and the light switch is set to c, Rthe exterior lighting switches on when it is dark after unlocking the vehicle with the SmartKey. The exterior lighting switches off when you open the driver’s door. Rthe exterior lighting remains on for 15 seconds when it is dark after closing the doors. If the engine is switched off and then none of the doors are opened, or if an open door is not closed, the exterior lighting goes out after 60 seconds. If you activate the Locator Lighting: function, the following light up: 23 Only for vehicles with front fog lamps. 24 Only for vehicles without front fog lamps. Rthe parking lamps Rthe tail lamps Rthe fog lamps23 Rthe low-beam headlamps24 Rthe license plate lamp Rthe side marker lamps X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Lights submenu. X Press the a button to confirm. X Press the : or 9 button to select the Locator Lighting: function. You will see the selected setting: Enabled or Disabled. X Press the a button to save the setting. To deactivate the delayed shut-off 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 and back to position 0. The delayed shut-off is deactivated. The delayed shut-off is reactivated the next time you start the engine. Activating/deactivating the interior lighting delayed switch-off If the Interior Lighting Delay: function is activated and you pull the SmartKey out of the ignition lock, the interior lighting remains on for around 10 seconds. X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Lights submenu. X Press the a button to confirm. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 181 Version: 3.0.3.6 Menus and submenus 181 X Press the : or 9 button to select the Interior Lighting Delay: function. You will see the selected setting: Enabled or Disabled. X Press the a button to save the setting. X Press the : or 9 button to select the Acoustic Lock Feedback: function. You will see the selected setting: Enabled or Disabled. X Press the a button to save the setting. Vehicle Activating/deactivating the automatic locking feature If you select the Automatic Door Lock: function, the vehicle is centrally locked above a speed of around 9 mph (15 km/h). i Further information on the automatic locking feature (Y page 78). X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Vehicle submenu. X Press the a button to confirm. X Press the : or 9 button to select the Automatic Door Lock: function. You will see the selected setting: Enabled or Disabled. X Press the a button to save the setting. Activating/deactivating the acoustic locking confirmation If you switch on the Acoustic Lock Feedback: function, an acoustic signal sounds when you lock or unlock the vehicle. When unlocking, the signal sounds once. When locking, it sounds three times. X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Vehicle submenu. X Press the a button to confirm. Convenience Activating/deactivating the EASY- ENTRY/EXIT feature You can use the Easy Entry/Exit: function to activate or deactivate the easy-entry/exit feature (Y page 99). G Warning! You must make sure no one can become trapped or injured by the moving steering wheel when the easy-entry/exit feature is activated. To stop steering wheel movement, move steering wheel adjustment lever or press one of the memory position buttons. Do not leave children unattended in the vehicle, or with access to an unlocked vehicle. Children could open the driver's door and unintentionally activate the easy-entry/exit feature, which could result in an accident and/or serious personal injury. X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Convenience submenu. X Press the a button to confirm. X Press the : or 9 button to select the Easy Entry/Exit: feature. You will see the selected setting: Enabled or Disabled. X Press the a button to save the setting. Switching the fold in mirrors when locking function on/off This function is only available in Canada. If you switch on the Fold Mirrors In when Locking: function, the exterior mirrors fold BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 182 Version: 3.0.3.6 182 Menus and submenus in when you lock the vehicle. When you unlock the vehicle and then open the driver's or front-passenger door, the exterior mirrors fold out again. If you have switched the function on and you fold the exterior mirrors in using the button on the door (Y page 100), they will not fold out automatically. The exterior mirrors can then only be folded out using the button on the door. 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 the a button to confirm. X Press the : or 9 button to select the Fold Mirrors in when Locking: function. You will see the selected setting: Enabled or Disabled. X Press the a button to save the setting. Resetting to factory settings For safety reasons, the Daytime Running Lights: function in the Light submenu is only reset if the vehicle is stationary. X Press the = or ; button on the steering wheel to select the Settings menu. X Press the : or 9 button to select the Factory Setting submenu. X Press the a button to confirm. The Reset All Settings? message appears. X Press the : or 9 button to select No or Yes. X Press the a button to confirm the selection. If you have selected Yes, the multifunction display shows a confirmation message. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 183 Version: 3.0.3.6 Display messages 183 Display messages Hiding display messages G Warning All categories of messages contain important information which should be taken note of and, where a malfunction is indicated, addressed as soon as possible at an authorized Mercedes-Benz Center. Failure to repair the condition noted may cause damage not covered by the Mercedes-Benz Limited Warranty, or result in property damage or personal injury. Display messages appear in the multifunction display. 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. You cannot hide display messages of the highest priority. The multifunction display shows these messages continuously until the causes for the messages have been remedied. Certain display messages are accompanied by an audible warning tone or a continuous tone. Please respond in accordance with the display messages and follow the additional notes in this Operator's Manual. Message memory You can read the display messages in the message memory. X Press = or ; on the steering wheel to select the Service 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 Confirm with a. X Press the 9 or : button to scroll through the display messages. When the ignition is switched off, all display messages are deleted apart from some high- priority display messages. Once the causes of the high-priority display messages have been rectified, the corresponding display messages are also deleted. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 184 Version: 3.0.3.6 184 Display messages Safety systems Display messages ÷ Inoperative See Operator's Manual ÷ ESC Currently Unavailable See Operator's Manual Possible causes/consequences and M Solutions G Risk of accident ESP® (Electronic Stability Program), BAS (Brake Assist) and hill start assist are not available due to a malfunction. In addition, the ä and å warning lamps light up in the instrument cluster. The brake system continues to function normally, but without the functions listed above. X Drive on carefully. X Visit a qualified specialist workshop. G Risk of accident ESP®, BAS and hill start assist are temporarily unavailable. In addition, the ä and å warning lamps light up in the instrument cluster. The self-diagnosis function might not be complete, for example. The brake system continues to function normally, but without the functions listed above. X Carefully drive a suitable distance making slight steering movements at a speed above 12 mph (20 km/h). If the display message disappears, the functions mentioned above are available again. If the display message continues to be displayed: X Drive on carefully. X Visit a qualified specialist workshop. G Risk of accident ESP®, BAS and hill start assist are temporarily unavailable. In addition, the ä and å warning lamps light up in the instrument cluster. The on-board voltage may be insufficient, for example. The brake system continues to function normally, but without the functions listed above. X Drive on carefully. If the display message disappears, the functions mentioned above are available again. If the display message continues to be displayed: X Visit a qualified specialist workshop. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 185 Version: 3.0.3.6 Display messages 185 Possible causes/consequences and M Solutions G Risk of accident If the display message is shown and the ä warning lamp flashes at the same time, ETS (Electronic Traction System) is deactivated. The brakes on the drive wheels could otherwise overheat. X Let the brakes cool down until the display message disappears and the ä warning lamp goes out. ETS is active again. USA only: one or more main functions in the mbrace system are malfunctioning. Canada only: one or more of the main functions of the TELEAID system is malfunctioning. X USA only: have the mbrace system checked at a qualified specialist workshop. X Canada only: have the TELEAID system checked at a qualified specialist workshop. G Risk of injury Vehicles with BabySmart™ (Canada only): The BabySmart™ child seat is positioned incorrectly. X Install the child seat in the correct position. G Risk of injury Vehicles with BabySmart™ (Canada only): The sensor for automatic child seat recognition is faulty. X Visit a qualified specialist workshop. G Risk of injury There is a malfunction in the SRS (Supplemental Restraint System). The 6 warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop. G Risk of injury SRS has malfunctioned at the front on the left or right. The 6 warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop. Display messages Tele Aid Inoperative Check Child Seat Pos. See Operator's Manual SRS Malfunction Service Required Front Left SRS Malfunction Service Required orFront Right SRS Malfunction Service Required BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 186 Version: 3.0.3.6 186 Display messages Display messages Rear Left SRS Malfunction Service Required orRear Right SRS Malfunction Service Required Rear Center SRS Malfunction Service Required Left Side Curtain Airbag Malfunction Service Required orRight Side Curtain Airbag Malfunction Service Required Possible causes/consequences and M Solutions G Risk of injury SRS has malfunctioned at the rear on the left or right. The 6 warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop. G Risk of injury SRS has malfunctioned at the rear center. The 6 warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop. G Risk of injury There is a malfunction in the left-hand and/or right-hand window curtain air bag. The 6 warning lamp also lights up in the instrument cluster. X Visit a qualified specialist workshop. G Warning In the event a malfunction of the SRS is indicated as outlined above, the SRS may not be operational. For your safety, we strongly recommend that you contact an authorized Mercedes-Benz Center immediately to have the system checked. Otherwise the SRS may not be activated when needed in an accident, which could result in serious or fatal injury, or it might deploy unexpectedly and unnecessarily which could also result in injury. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 187 Version: 3.0.3.6 Display messages 187 Display messages Front Passenger Airbag Enabled See Operator's Manual Possible causes/consequences and M Solutions The front-passenger air bag is enabled during the journey, although: Rthere is a child, a small adult or an object weighing less than the system's weight threshold on the front-passenger seat. Rthe front-passenger seat is unoccupied. The system may detect the additional weight of objects on the seat or forces acting on the seat. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. X Engage the parking brake. X Switch off the ignition. X Open the front-passenger door. X Remove the child and the child restraint system from the front- passenger seat. X If necessary, secure the child in a child restraint system on a suitable rear seat. X Make sure that there are no objects adding to the weight applied to the seat. The system may otherwise detect the additional weight and interpret the seat occupant's weight as greater than it actually is. X Make sure that the seat is unoccupied and has no objects placed on it, close the front-passenger door, and switch on the ignition. Observe the 45(Y page 41) indicator lamps and the multifunction display and check the following: Seat unoccupied and ignition switched on: Rthe 45 indicator lamp must light up and remain lit. When the indicator lamp is on, OCS (Y page 41) has deactivated the front-passenger air bag. RThe Front Passenger Airbag Enabled See Operator's Manual or Front Passenger Airbag Disabled See Operator's Manual display messages must not appear. Wait for at least 60 seconds until the necessary system checks have been completed and to make sure that the display messages do not appear in the multifunction display. If these conditions are met, the front-passenger seat can be occupied again. Whether the 45 indicator lamp remains lit or goes out depends on how OCS classifies the occupant. If the conditions are not met, the system is not operating correctly. X Visit a qualified specialist workshop immediately. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 188 Version: 3.0.3.6 188 Display messages G Warning If the 45 indicator lamp remains off even after performing the above corrective steps, do not have any children 12 years old and under and other small individuals use the front-passenger seat until the system has been repaired. Display messages Front Passenger Airbag Disabled See Operator's Manual Possible causes/consequences and M Solutions The front-passenger air bag is deactivated during the journey even though an adult or a person larger than a certain size is occupying the front-passenger seat. If additional forces are applied to the seat, the system may interpret the occupant's weight as lower than it actually is. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. X Engage the parking brake. X Switch off the ignition. X Have the occupant get out of the vehicle. X Make sure that the seat is unoccupied and has no objects placed on it, close the front-passenger door, and switch on the ignition. Observe the 45(Y page 41) indicator lamps and the multifunction display and check the following: Seat unoccupied and ignition switched on: Rthe 45 indicator lamp must light up and remain lit. When the indicator lamp is on, OCS (Y page 41) has deactivated the front-passenger air bag. RThe Front Passenger Airbag Enabled See Operator's Manual or Front Passenger Airbag Disabled See Operator's Manual display messages must not appear. Wait for at least 60 seconds until the necessary system checks have been completed and to make sure that the display messages do not appear in the multifunction display. If these conditions are met, the front-passenger seat can be occupied again. Whether the 45 indicator lamp remains lit or goes out depends on how OCS classifies the occupant. If the conditions are not met, the system is not operating correctly. X Visit a qualified specialist workshop immediately. G Warning If the 45 indicator lamp remains lit with an adult occupant on the front-passenger seat even after performing the above corrective steps, do not have any passenger use the front- passenger seat until the system has been repaired. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 189 Version: 3.0.3.6 Display messages 189 Brakes Display messages $(USA only) J(Canada only) ABS and ESC Currently Unavailable See Operator's Manual Possible causes/consequences and M Solutions G Risk of accident ABS (Anti-lock Braking System), ESP® (Electronic Stability Program), BAS (Brake Assist) and hill start assist are temporarily unavailable. The self-diagnosis might not be finished, for example. In addition, the ä, å and ! warning lamps light up in the instrument cluster. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Carefully drive a suitable distance making slight steering movements at a speed above 12 mph (20 km/h). If the display message disappears, the functions mentioned above are available again. If the display message continues to be displayed: X Drive on carefully. X Visit a qualified specialist workshop. G Risk of accident ABS, ESP®, BAS and hill start assist are temporarily unavailable. The on-board voltage may be insufficient, for example. In addition, the ä, å and ! warning lamps light up in the instrument cluster. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Drive on carefully. If the display message disappears, the functions mentioned above are available again. If the display message continues to be displayed: X Drive on carefully. X Visit a qualified specialist workshop. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 190 Version: 3.0.3.6 190 Display messages Display messages $(USA only) J(Canada only) ABS and ESC Inoperative See Operator's Manual $(USA only) J(Canada only) EBD, ABS, and ESC Inoperative See Operator's Manual Check Brake Pad Wear $(USA only) J(Canada only) Release Park. Brake $(USA only) J(Canada only) Check Brake Fluid Level Possible causes/consequences and M Solutions G Risk of accident ABS, ESP®, BAS and hill start assist are unavailable due to a malfunction. In addition, the ä, å and ! warning lamps light up in the instrument cluster. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Drive on carefully. X Visit a qualified specialist workshop. G Risk of accident EBD (Electronic Brake force Distribution), ABS, ESP®, BAS and hill start assist are unavailable due to a malfunction. In addition, the ä, å and ! warning lamps in the instrument cluster light up and a warning tone sounds. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example. X Drive on carefully. X Visit a qualified specialist workshop immediately. The brake pads/linings have reached their wear limit. X Visit a qualified specialist workshop. You are driving with the parking brake engaged. A warning tone also sounds. X Release the parking brake. G Risk of accident There is insufficient brake fluid in the brake fluid reservoir. Additionally, the red $ (USA only)/ J (Canada only) warning lamp lights up in the instrument cluster and a warning tone sounds. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not continue driving under any circumstances. X Engage the parking brake. X Consult a qualified specialist workshop. X Do not add brake fluid. This will not rectify the malfunction. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 191 Version: 3.0.3.6 Display messages 191 G Warning Driving with the message Check Brake Fluid Level displayed can result in an accident. Have your brake system checked immediately. Do not add brake fluid before checking the brake system. Overfilling the brake fluid reservoir can result in spilling brake fluid on hot engine parts and the brake fluid catching fire. You can be seriously burned. Lights i Display messages about LEDs: Possible causes/consequences and M Solutions The left or right-hand cornering light is faulty. X Check whether you are permitted to change the bulb yourself or X Visit a qualified specialist workshop. (Y page 111). (Y page 111). This display message will only appear if all LEDs have failed. Display messages Check Left Cornering Light orCheck Right Cornering Light Check Left Low Beam orCheck Right Low Beam Check Rear Left Turn Signal orCheck Rear Right Turn Signal Check Front Left Turn Signal orCheck Front Right Turn Signal (Y page 111). (Y page 111). or X Visit a qualified specialist workshop. or X Visit a qualified specialist workshop. The left or right-hand low-beam headlamp is faulty. X Check whether you are permitted to change the bulb yourself or X Visit a qualified specialist workshop. The rear left-hand or rear right-hand turn signal is faulty. X Check whether you are permitted to change the bulb yourself The front left-hand or front right-hand turn signal is faulty. X Check whether you are permitted to change the bulb yourself BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 192 Version: 3.0.3.6 192 Display messages Display messages Check Left Mirror Turn Signal orCheck Right Mirror Turn Signal Check Center Brake Lamp Check Left Brake Lamp orCheck Right Brake Lamp Check Left Tail and Brake Lamps orCheck Right Tail and Brake Lamps Check Left Tail Lamp orCheck Right Tail Lamp Check Left High Beam orCheck Right High Beam Possible causes/consequences and M Solutions The turn signal in the left-hand and/or right-hand exterior mirror is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. The high-mounted brake lamp is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. The left or right-hand brake lamp is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. The left or right brake/tail lamp is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. The left or right-hand tail lamp is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. The left or right-hand high beam is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 193 Version: 3.0.3.6 Display messages 193 Display messages Check Left License Plate Lamp orCheck Right License Plate Lamp Check Left Fog Lamp orCheck Front Fog Lamp Check Rear Left Fog Lamp orCheck Rear Right Fog Lamp Check Front Left Parking Lamp orCheck Front Right Parking Lamp Check Left Reverse Lamp orCheck Right Reverse Lamp Check Front Left Sidemarker Lamp orCheck Front Right Sidemarker Lamp Possible causes/consequences and M Solutions The left or right-hand license plate lamp is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. X Visit a qualified specialist workshop. The left-hand or right-hand front fog lamp is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. The left-hand or right-hand rear fog lamp is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. The front left or front right standing lamp is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. The left or right-hand backup lamp is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. The front left or right side marker lamp is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 194 Version: 3.0.3.6 194 Display messages Display messages Check Rear Left Sidemarker Lamp orCheck Rear Right Sidemarker Lamp Check Left Daytime Running Light orCheck Right Daytime Running Light Active Headlamps Inoperative Malfunction See Operator's Manual Auto Lamp Function Inoperative Switch Off Lights Engine Display messages Check Coolant Level See Operator's Manual Possible causes/consequences and M Solutions The rear left or right side marker lamp is faulty. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. The left or right-hand daytime running light is defective. X Check whether you are permitted to change the bulb yourself (Y page 111). or X Visit a qualified specialist workshop. The active light function is faulty. X Visit a qualified specialist workshop. The exterior lighting is faulty. X Visit a qualified specialist workshop. The light sensor is faulty. 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 c. Possible causes/consequences and M Solutions The coolant level is too low. X Add coolant, observing the warning notes when doing so (Y page 240). X If coolant needs adding more often than usual, have the engine coolant system checked at a qualified specialist workshop. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 195 Version: 3.0.3.6 Display messages 195 G Warning Do not spill antifreeze on hot engine parts. Antifreeze contains ethylene glycol which may burn if it comes into contact with hot engine parts. You could be seriously burned. ! The coolant level is too low. Avoid making long journeys with too little coolant in the cooling system. The engine will otherwise be damaged. The display messages and the corresponding symbol that indicate that the coolant level is too low must not be ignored. Display messages Coolant Level Low Stop Vehicle Turn Engine Off Possible causes/consequences and M Solutions The coolant is too hot. X Pull over and stop the vehicle safely as soon as possible, paying X Make sure that the air supply to the radiator is not blocked, e.g. attention to road and traffic conditions. by snow, slush or ice. X Wait until the display message disappears before restarting the engine. There is otherwise a risk of engine damage. X Pay attention to the coolant temperature display. X If the temperature increases again, visit a qualified specialist workshop immediately. The poly-V-belt may have torn. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. X Open the hood. X Check whether the poly-V-belt is torn. If the poly-V-belt is torn: ! Do not continue driving. The engine could otherwise overheat. X Consult a qualified specialist workshop. If the poly-V-belt is OK: X Wait until the display message disappears before restarting the engine. There is otherwise a risk of engine damage. X Pay attention to the coolant temperature display. X Visit a qualified specialist workshop. G Warning Driving when your engine is overheated can cause some fluids which may have leaked into the engine compartment to catch fire. You could be seriously burned. Steam from an overheated engine can cause serious burns which can occur just by opening the engine hood. Stay away from the engine if you see or hear steam coming from it. Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the vehicle and do not stand near the vehicle until the engine has cooled down. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 196 Version: 3.0.3.6 196 Display messages ! If the coolant temperature exceeds 248 ‡(120 †) do not continue driving. The engine will otherwise be damaged. Display messages ? The engine fan is faulty. Possible causes/consequences and M Solutions X At coolant temperatures below 248 ‡ (120 †), continue driving to the next qualified specialist workshop. X Avoid subjecting the engine to heavy loads, e.g. driving in mountainous terrain, and stop-start driving. # The battery is not being charged. Possible causes are: Ra faulty alternator Ra torn poly-V-belt Ra malfunction in the electronics X Pull over and stop the vehicle safely and switch off the engine, paying attention to road and traffic conditions. X Open the hood. X Check whether the poly-V-belt is torn. If the poly-V-belt is torn: ! Do not continue driving. The engine could otherwise overheat. X Consult a qualified specialist workshop. If the poly-V-belt is OK: X Visit a qualified specialist workshop. The engine oil level has dropped to a critical level. A warning tone also sounds. X Check the oil level (Y page 239). X If necessary, add the engine oil (Y page 240). X Have the engine checked for leaks if engine oil has to be added more often than usual. Check Engine Oil At Next RefuelingCheck Engine Oil at Next Refueling Information on approved engine oils can be obtained from any qualified specialist workshop or on the Internet at http://www.mbusa.com (USA only). ! The oil level is too low. Avoid long journeys with too little engine oil. There is a risk of engine damage. The display messages and the corresponding symbol that indicate that the oil level is too low must not be ignored. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 197 Version: 3.0.3.6 Display messages 197 Display messages Possible causes/consequences and M Solutions C There is only a small amount of fuel in the fuel tank. X Refuel at the nearest gas station. The fuel level has dropped into the reserve range. X Refuel at the nearest gas station. Fuel Level Low Gas Cap Loose Driving systems Display messages Cruise Control Inoperative Cruise Control --- mph The fuel system pressure is too low. The fuel filler cap is not closed correctly or the fuel system is leaking. X Check that the fuel filler cap is correctly closed. X If the fuel filler cap is not correctly closed: close the fuel filler X If the fuel filler cap is closed: visit a qualified specialist cap. workshop. Possible causes/consequences and M Solutions Cruise control is faulty. A warning tone also sounds. X Visit a qualified specialist workshop. A condition for activating cruise control has not been met. You attempted to save a speed of less than 20 mph (30 km/h). X If the situation allows, drive faster than 20 mph (30 km/h) and save the speed. X Check the activation conditions for cruise control (Y page 156). Tires G Warning Do not drive with a flat tire. A flat tire affects the ability to steer or brake the vehicle. You may lose control of the vehicle. Continued driving with a flat tire will cause excessive heat build-up and possibly a fire. G Warning Follow recommended tire inflation pressures. Do not underinflate tires. Underinflated tires wear excessively and/or unevenly, adversely affect handling and fuel economy, and are more likely to fail from being overheated. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 198 Version: 3.0.3.6 198 Display messages Do not overinflate tires. Overinflated tires can adversely affect handling and ride comfort, wear unevenly, increase stopping distance, and result in sudden deflation (blowout) because they are more likely to become punctured or damaged by road debris, potholes etc. Display messages Check Tire Pressure Soon G Risk of accident Possible causes/consequences and M Solutions The tire pressure loss warning system has detected a significant loss in pressure. A warning tone also sounds. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so. X Check the tires and, if necessary, change the wheel X Check the tire pressures and, if necessary, set to the correct (Y page 286). tire pressure. Check Tire Pressure Then Restart Run Flat Indicator Run Flat Indicator Inoperative Tire pressures will be displayed after driving a few minutes Tire Press. Monitor Inoperative Tire Pressure Monitor Inoperative No Wheel Sensors X Restart the tire pressure loss warning system when the tire pressure is correct (Y page 275). A display message from the tire pressure loss warning system was shown and the system has not been restarted since. X Set the correct tire pressure in all four tires. X Restart the tire pressure loss warning system (Y page 275). The tire pressure loss warning system is faulty. X Visit a qualified specialist workshop. The tire pressure monitor is measuring the tire pressure. X Drive on. The tire pressures appear in the multifunction display after you have been driving for a few minutes. The TPMS is faulty. X Visit a qualified specialist workshop. The wheels mounted do not have a suitable tire pressure sensor. The tire pressure monitor is deactivated. X Mount wheels with suitable tire pressure sensors. The TPMS is activated automatically after driving for a few minutes. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 199 Version: 3.0.3.6 Display messages 199 Display messages Check Tires Possible causes/consequences and M Solutions G Risk of accident The tire pressure in one or more tires has dropped significantly. The wheel position is displayed in the multifunction display. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so. X Correct the tire pressure (Y page 277). X If necessary, change a wheel (Y page 286). Caution Tire Malfunction G Risk of accident Correct Tire Pressure Tire Press. Sensor(s)Missing Tire Press. Monitor Currently Unavailable Tire Press. Warning Caution Tire Malfunction The tire pressure in one or more tires has dropped suddenly. The wheel position is displayed in the multifunction display. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so. X If necessary, change a wheel (Y page 286). The tire pressure is insufficient in at least one of the tires or the tire pressure difference between the wheels is too great. X Check the tire pressures at the next opportunity. If necessary, correct the tire pressure (Y page 277). X Restart the tire pressure monitor (Y page 279). There is no signal from the tire pressure sensor of one or several wheels. The pressure of the affected tire is not displayed in the multifunction display. X Have the faulty tire pressure sensor replaced at a qualified specialist workshop. No signals are being received from the tire pressure sensors due to radio interference. The tire pressure monitor is temporarily malfunctioning. X Drive on. The TPMS restarts automatically as soon as the problem has been solved. G Risk of accident The tire pressure in one or more tires has dropped suddenly. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so. X If necessary, change a wheel (Y page 286). BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 200 Version: 3.0.3.6 200 Display messages Display messages Check Tire Pressure Correct Tire Pressure Vehicle Display messages Shift to 'P' or 'N' to Start Engine Shift to 'P' Possible causes/consequences and M Solutions G Risk of accident The tire pressure in one or more tires has dropped significantly. X Stop the vehicle without making any sudden steering or braking maneuvers. Pay attention to the traffic conditions as you do so. X If necessary, change a wheel (Y page 286). X Check the tire pressure. If necessary, correct the tire pressure (Y page 277). The tire pressure is insufficient in at least one of the tires or the tire pressure difference between the wheels is too great. X Check the tire pressures at the next opportunity. If necessary, correct the tire pressure (Y page 277). Possible causes/consequences and M Solutions You have attempted to start the engine with the transmission in position R or D. X Shift the transmission to position P or N. You turned off the engine with the Start/Stop button and opened the driver's door while the transmission was in position N. or You have attempted to turn off the engine with the Start/Stop button while the transmission was in position R or D. X Shift the transmission to position P. A Wagon: the tailgate is open. X Close the tailgate. N The trunk lid is open. X Close the trunk lid. G Risk of accident The hood is open. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. X Engage the parking brake. X Close the hood. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 201 Version: 3.0.3.6 Display messages 201 Display messages C At least one door is open. Possible causes/consequences and M Solutions Rear Lt. Backrest Not Latched orRear Rt. Backrest Not Latched Power Steering Malfunction See Operator's Manual No Service X Close all doors. G Risk of injury The backrest in the rear is not engaged on the left-hand and/or right-hand side. X Push the backrest back until it engages. G Risk of accident The power steering assistance is faulty. You will need to use more force to steer. A warning tone also sounds. X Check whether you are able to apply the extra force required. X If you are able to steer safely: carefully drive on to a qualified specialist workshop. X If you are unable to steer safely: do not drive on. Contact the nearest qualified specialist workshop. Your vehicle is outside the network provider transmitter/receiver range. X Wait until the mobile phone operational readiness symbol appears in the multifunction display. ¥ Check Washer Fluid The washer fluid level in the washer fluid reservoir has dropped below the minimum. X Add washer fluid (Y page 241). SmartKey Display messages Key Does Not Belong to Vehicle Take Your Key from Ignition Possible causes/consequences and M Solutions You have put the wrong SmartKey in the ignition lock. X Use the correct SmartKey. The SmartKey is in the ignition lock. X Remove the SmartKey. BA 204 USA, CA Edition A 2011; 1; 5, en-US hereepe 2010-05-20T09:17:30+02:00 - Seite 202 Version: 3.0.3.6 202 Display messages Display messages Obtain a new key Replace Key Battery Don't Forget Your Key Key Not Detected (red display message) Key Not Detected (white display message) Possible causes/consequences and M Solutions The SmartKey needs to be replaced. X Visit a qualified specialist workshop. The batteries of the KEYLESS-GO key are discharged. X Change the batteries (Y page 74). The display message is displayed for a maximum of 60 seconds and is just a reminder. You have opened the driver's door with the engine switched off. The KEYLESS-GO key is not in the ignition lock. X Take the KEYLESS-GO key with you when leaving the vehicle. The KEYLESS-GO key is not in the vehicle. A warning tone also sounds. If the engine is switched off, you can no longer lock the vehicle centrally or start the engine. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. X Engage the parking brake. X Locate the KEYLESS-GO key. The KEYLESS-GO key is not detected while the engine is running because there is interference from a strong source of radio waves. A warning tone also sounds. X Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions.

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2011 Mercedes-benz C Class Owners Manual