Practical hints
What to do if ...
| Display message | Possible cause/consequence | Possible solution |
|---|---|---|
| SRSRestraint systemmalfunctionDrive to workshop | The system is malfunctioning. | ▶ Drive with added caution to the nearest authorized Mercedes-Benz Center. |
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 visit 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 result in serious or fatal injury, or it might deploy unexpectedly and unnecessarily which could also result in injury.
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| Display message | Possible cause/ consequence | Possible solution |
|---|---|---|
| Front-pass. airbag activated See Operator's Manual | Monitor the indicator lamp on the center console (▷ page 27) and the multifunction display in the instrument cluster (▷ page 24) for the following:With the seat unoccupied and the ignition turned on,• the indicator lamp on the center console should illuminate and remain illuminated, indicating that the OCS (▷ page 77) has deactivated the air bag.• the message Front-pass. airbag activated See Operator's Manual or the message Front-pass. airbag deactivated See Operator's Manual should not appear in the multifunction display at any time the seat is unoccupied. Wait at last 60 seconds for the system to complete the necessary check cycles and to make sure neither message appears 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 (▷ page 77), the 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 by an authorized Mercedes-Benz Center. |
Warning!
If the indicator lamp remains out 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.
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Practical hints
What to do if ...
| Display message | Possible cause/consequence | Possible solution |
|---|---|---|
| Front-pass. airbag deactivated See Operator’s Manual | 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:▶ Switch off the ignition (▷ page 33).▶ Have the front passenger vacate the seat and exit the vehicle.▶ Keep the seat unoccupied, close the front passenger door and switch on the ignition (▷ page 33).(Continued on next page) |
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Practical hints
What to do if ...
| Display message | Possible cause/ consequence | Possible solution |
|---|---|---|
| Front-pass. airbag deactivated See Operator's Manual | Monitor the indicator lamp on the center console (▷ page 27) and the multifunction display in the instrument cluster (▷ page 24) for the following:With the seat unoccupied and the ignition turned on,• the indicator lamp on the center console should illuminate and remain illuminated, indicating that the OCS (▷ page 77) has deactivated the air bag.• the message Front-pass. airbag activated See Operator's Manual or the message Front-pass. airbag deactivated See Operator's Manual should not appear in the multifunction display at any time the seat is unoccupied. Wait at last 60 seconds for the system to complete the necessary check cycles and to make sure neither message appears 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 (▷ page 77), the 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 by an authorized Mercedes-Benz Center. |
Warning!
If the 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.
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Practical hints
What to do if ...
| Display message | Possible cause/consequence | Possible solution |
|---|---|---|
| Run Flat Indicator inactive | The Run Flat Indicator* is malfunctioning. | ► Have the Run Flat Indicator* checked by an authorized Mercedes-Benz Center. |
| Check tiresThen reactivate Run Flat Indicator | There was a warning message about a loss in tire inflation pressure and the Run Flat Indicator* has not been reactivated yet. | ► Make sure that the correct tire inflation pressure is set for each tire.► Then reactivate the Run Flat Indicator*. |
| Run Flat Indicator unavailable | The Run Flat Indicator* has been switched off due to an error. | ► Have the Run Flat Indicator* checked by an authorized Mercedes-Benz Center. |
| Tire pressureCheck tires | The Run Flat Indicator* indicates that the pressure is too low in one or more tires. | ► Carefully bring the vehicle to a halt, avoiding abrupt steering and braking maneuvers. Observe the traffic situation around you.► Check and adjust the tire inflation pressure as required (▷ page 316).► If necessary, change the wheel (▷ page 406).► Reactivate the Run Flat Indicator* after adjusting the tire inflation pressure values (▷ page 318). |
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.
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Symbol messages
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| Display symbol | Display message | Possible cause/consequence | Possible solution |
|---|---|---|---|
| BRAKE (USA only)(P) (Canada only) | ReleaseParking brake | You are driving with the parking brake set. | ► Release the parking brake(▷ page 50). |
| **** | Brake wearVisit workshop | The brake pads have reached their wear limit. | ► Have the brake pads replaced as soon as possible. |
| BRAKE (USA only)(i) (Canada only) | Brake fluidVisit workshop | There is insufficient brake fluid in the reservoir. | ► Risk of accident! Stop the vehicle and notify an authorized Mercedes-Benz Center. Do not add brake fluid! This will not solve the problem. |
Warning!
Driving with the message Brake fluid Visit workshop. 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.
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.
Brake pad thickness must be visually checked by a qualified technician at the intervals specified in the Maintenance booklet.
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Practical hints
What to do if ...
| Display symbol Display message | Possible cause/consequence | Possible solution |
|---|---|---|
| Coolant Ghseks Tevel | The coolant level is too low. | > Add coolant (> page 301). > If you have to add coolant frequently, have the cooling system checked by an authorized Mercedes-Benz Center. |
Warning!
AN
re 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 can be seriously burned.
ae!
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 Limited Warranty.
Do not drive without sufficient amount of coolant in the cooling system. The engine will overheat causing major engine damage.
Practical hints
What to do if ...
| Display symbol | Display message | Possible cause/consequence | Possible solution |
|---|---|---|---|
| CoolantStop, engine off! | The coolant is too hot. | ► Stop the vehicle in a safe location and turn off the engine.► Only start the engine again after the message disappears. You could otherwise damage the engine. |
Warning!
Driving when your engine is badly 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 and can occur just by opening the hood. Stay away from the engine if you see or hear steam coming from it.
Turn off the engine, get out of the vehicle and do not stand near the vehicle until the engine has cooled down.
During severe operating conditions and stop-and-go city traffic, the coolant temperature may rise close to 248°F (120°C).
The engine should not be operated with the coolant temperature above 248°F (120°C). Doing so may cause serious engine damage which is not covered by the Mercedes-Benz Limited Warranty.
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Practical hints
What to do if ...
| Display symbol | Display message | Possible cause/consequence | Possible solution |
|---|---|---|---|
| CoolantStop, engine off! | The poly-V-belt could be broken. | ► Stop the vehicle in a safe location and immediately turn off the engine.► Check the poly-V-belt.If it is broken:► Do not continue to drive. Otherwise the engine will overheat due to an inoperative water pump which may result in damage to the engine. Notify an authorized Mercedes-Benz Center.If it is intact:► 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.► Observe the coolant temperature gauge in the instrument cluster (▷ page 24).► Drive immediately to the nearest authorized Mercedes-Benz Center. | |
| CoolantVisit workshop. | The cooling fan for the coolant is malfunctioning. | ► Observe the coolant temperature gauge in the instrument cluster (▷ page 24).► Have the fan replaced as soon as possible. |
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Practical hints
What to do if ...
| Display symbol | Display message | Possible cause/consequence | Possible solution |
|---|---|---|---|
| Cruise contr. Drive to workshop | Cruise control is malfunctioning. | ▶ Visit an authorized Mercedes-Benz Center. | |
| Display malfunction Visit workshop | The instrument cluster display is malfunctioning. | ▶ Continue driving with added caution.▶ Visit an authorized Mercedes-Benz Center as soon as possible. | |
| The displays for several systems have malfunctioned. Some systems themselves may also have malfunctioned. | ▶ Have the electronic systems checked by an authorized Mercedes-Benz Center. | ||
| Display malfunction Visit workshop | Certain electronic systems are unable to relay information to the control system. The following systems may have failed:• Coolant temperature display• Tachometer• Cruise control display | ▶ Have the electronic systems checked by an authorized Mercedes-Benz Center. | |
| Doors open | You are attempting to drive with one or more doors open. | ▶ Close the doors. |
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Practical hints
What to do if ...
| Display symbol | Display message | Possible cause/consequence | Suggested solution |
|---|---|---|---|
| Check oil level at next gas station | The engine oil has dropped to a critical level. | ► Check the engine oil level (▷ page 299) and add oil as required (▷ page 300).► If you must add engine oil frequently, have the engine checked for possible leaks. |
When the message Check oil level at next gas station appears while the engine is running and at operating temperature, the engine oil level has dropped to approximately 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, drive to the nearest service station where the engine oil should be topped to the required level with an approved oil specified in the Factory Approved Service Products pamphlet.
❗ The engine oil level warnings should not be ignored. Extended driving with the symbol displayed could result in serious engine damage that is not covered by the Mercedes-Benz Limited Warranty.
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| Display symbol | Display message | Possible cause/consequence | Possible solution |
|---|---|---|---|
| 3rd brake lamp | The high mounted brake lamp is malfunctioning. This message will only appear if all light emitting diodes have stopped working. | ▶ Visit an authorized Mercedes-Benz Center as soon as possible. | |
| Backup lamp, left | The left backup lamp is malfunctioning. | ▶ Replace the bulb as soon as possible. | |
| Backup lamp, right | The right backup lamp is malfunctioning. | ▶ Replace the bulb as soon as possible. | |
| Brake lamp Drive to workshop | Brake lamp illumination is delayed or lamp is permanently on. | ▶ Visit an authorized Mercedes-Benz Center as soon as possible. | |
| Brake lamp left | The left brake lamp is malfunctioning. | ▶ Replace the bulb as soon as possible. | |
| Brake lamp right | The right brake lamp is malfunctioning. | ▶ Replace the bulb as soon as possible. | |
| Display malfunction. Visit workshop | The display for the lamps or the system is malfunctioning. | ▶ Visit an authorized Mercedes-Benz Center as soon as possible. | |
| Front foglamp left | The left front fog lamp is malfunctioning. | ▶ Visit an authorized Mercedes-Benz Center as soon as possible. | |
| Front foglamp right | The right front fog lamp is malfunctioning. | ▶ Visit an authorized Mercedes-Benz Center as soon as possible. | |
| Front left side marker lamp | The left front side marker lamp is malfunctioning. | ▶ Visit an authorized Mercedes-Benz Center as soon as possible. | |
| Front right sider marker lamp | The right front side marker lamp is malfunctioning. | ▶ Visit an authorized Mercedes-Benz Center as soon as possible. |
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What to do if ...
| Display symbol | Display message | Possible cause/consequence | Possible solution |
|---|---|---|---|
| High beam left | The left high beam lamp is malfunctioning. | > Replace the bulb as soon as possible. | |
| High beam right | The right high beam lamp is malfunctioning. | > Replace the bulb as soon as possible. | |
| License plate lamp, eft | The left license plate lamp is malfunctioning. | Replace the bulb as soon as possible. | |
| License plate lamp, right | The right license plate lamp is malfunctioning. | Replace the bulb as soon as possible. | |
| Light sensor Drive to workshop | The lamp sensor is malfunctioning. The headlamps switch on automatically. | > In the control system, set lamp operation to manual (> page 149). Switch on the headlamps using the exterior lamp switch (> page 118). Visit an authorized Mercedes-Benz Center as soon as possible. | |
| Low beam left | The left low beam lamp is malfunctioning. | Halogen headlamp: > Replace the bulb as soon as possible. Bi-Xenon* headlamp: > Visit an authorized Mercedes-Benz Center as soon as possible. |
Practical hints
What to do if ...
| Display symbol | Display message | Possible cause/consequence | Possible solution |
|---|---|---|---|
| Low beam right | The right low beam lamp is malfunctioning. | Halogen headlamp:► Replace the bulb as soon as possible.Bi-Xenon* headlamp:► Visit an authorized Mercedes-Benz Center as soon as possible. | |
| Parking lamp left front | The left front parking lamp is malfunctioning. | ► Replace the bulb as soon as as possible. | |
| Parking lamp right front | The right front parking lamp is malfunctioning. | ► Replace the bulb as soon as as possible. | |
| Rear fog lamp Substit. bulb on | The rear fog lamp is malfunctioning. A substitute bulb is being used. | ► Replace the bulb as soon as as possible. | |
| Switch off lights | Headlamps have been turned on with the driver’s door opened and the SmartKey removed from the starter switch. | ► Switch off the headlamps. | |
| Taillamp left Substit. bulb on | The left tail lamp is malfunctioning. A substitute bulb is being used. | ► Replace the bulb as soon as as possible. | |
| Taillamp right Substit. bulb on | The right tail lamp is malfunctioning. A substitute bulb is being used. | ► Replace the bulb as soon as as possible. |
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| Display symbol | Display message | Possible cause/consequence | Possible solution |
|---|---|---|---|
| Seat belt symbol | Belt systemDrive to workshop | The seat belt system is malfunctioning. | ► Visit an authorized Mercedes-Benz Center as soon as possible. |
| Steering wheel symbol | Steering oilVisit workshop | The steering gear oil level is too low.There is a danger of steering gear damage. | ► Have the system checked by an authorized Mercedes-Benz Center. |
Warning!
If the level of steering gear oil in reservoir is too low, the steering power assistance could fail. Much greater effort will then be needed to turn the steering wheel.
Do not add steering oil without checking the steering system.
Do not drive the vehicle. Have the system checked at an authorized Mercedes-Benz Center as soon as possible.
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What to do if ...
| Display symbol | Display message Possible | cause/consequence Possible solution |
|---|---|---|
| « 2 Close slid./pop-up sunroo | You have opened the driver’s door with the SmartKey removed from the starter switch and the sliding portion of the tilt/sliding sunroof* open. | > Close the tilt/sliding (D> page 244). |
| Close slid./pop-up sunroo | You have opened the driver’s door with the SmartKey removed from the starter switch and the tilting portion of the tilt/sliding sunroof* open. | > Close the tilt/sliding (D> page 244). |
| Tele Aid malfunction. Drive to workshop | One or more main functions of the Tele Aid system* are malfunctioning. | K A 5° n > Have the Tele Aid an authorized Mercedes-Benz |
| Function unavailable | This display appears if button or on the multifunction steering wheel is pressed and the vehicle is not equipped with a telephone*. | D |
| Trunk open | You are attempting to drive with the trunk open. | > Close the trunk. |
| Washer fluid please refill | The fluid level has dropped to about Vz of total reservoir capacity. | Add washer fluid |
