Safety systems

Display messages Possible causes/consequences and Solutions
Unavailable See Operator's Manual

Currently Unavailable See Operator's Manual

 G Risk of accident ABS (Anti-lock Braking System), ESP® (Electronic Stability Program), BAS (Brake Assist), hill start assist and ESP® trailer stabilization are temporarily unavailable.

In addition, the and, warning lamps light up in the and instrument cluster. 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. The wheels could therefore lock if you brake hard, for example.

  • 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:

  • Drive on carefully.
  • Visit a qualified specialist workshop.

Risk of accident

ABS, ESP®, BAS, hill start assist and ESP® trailer stabilization are temporarily unavailable.

In addition, the and, warning lamps light up in the and instrument cluster. warning lamps light up in the instrument cluster.

For example, the on-board voltage may be insufficient. The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example.

  • Drive on carefully. If the display message disappears, the functions mentioned above are available again.

If the display message continues to be displayed:

  • Drive on carefully.
  • Visit a qualified specialist workshop.
See Operator's Manual

Inoperative See Operator's Manual

 

 Risk of accident

ABS, ESP®, BAS, hill start assist and ESP® trailer stabilization are unavailable due to a malfunction.

The (Canada only), (USA only)/ , (Canada only), and, warning lamps in the instrument and cluster also light up. warning lamps in the instrument cluster also light up.

The brake system continues to function normally, but without the functions listed above. The wheels could therefore lock if you brake hard, for example.

  • Drive on carefully.
  • Visit a qualified specialist workshop immediately.
Unavailable See Operator's Manual

Currently Unavailable See Operator's Manual

 Risk of accident

ESP®, BAS, hill start assist and ESP® trailer stabilization are temporarily unavailable.

In addition, the warning lamps light up in the and instrument cluster. 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.

  • 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:

  • Drive on carefully.
  • Visit a qualified specialist workshop.

Risk of accident

If the display message is shown and the same time, the Electronic Traction System is deactivated. Otherwise, the warning lamp flashes at the same time, the Electronic Traction System is deactivated. Otherwise, the brakes on the drive wheels could overheat.

  • Let the brakes cool down until the display message disappears and the out. The Electronic Traction System is activated again. warning lamp goes out. The Electronic Traction System is activated again.
See Operator's Manual

Inoperative See Operator's Manual

 G Risk of accident

ESP®, hill start assist and ESP® trailer stabilization are unavailable due to a malfunction.

In addition, the warning lamps light up in the and instrument cluster. warning lamps light up in the instrument cluster.

The brake system continues to function normally, but without the functions listed above.

  • Drive on carefully.
  • Visit a qualified specialist workshop.
See Operator's Manual

Inoperative See Operator's Manual

 Risk of accident

EBD (electronic brake force distribution), ABS, ESP®, BAS and hill start assist are unavailable due to a malfunction. In addition, the and, warning lamps light up in the and instrument cluster and a warning tone sounds. The brake system continues warning lamps light up in the instrument cluster 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.

  • Drive on carefully.
  • Visit a qualified specialist workshop immediately.
Pad Wear

Check Brake Pad Wear

 The brake pads/linings have reached their wear limit.
  • Visit a qualified specialist workshop.
(Canada only) (USA only)

Release Parking Brake (Canada only)

Release Parking Brake

 You are driving with the parking brake applied. A warning tone also sounds.
  • Release the parking brake.
(Canada only) (USA only)

Check Brake Fluid Level (Canada only)

Check Brake Fluid Level

 Risk of accident

There is not enough brake fluid in the brake fluid reservoir. Additionally, the red (Canada only) warning lamp (USA only)/ lights up in the instrument cluster and a warning tone sounds. (Canada only) warning lamp lights up in the instrument cluster and a warning tone sounds.

  • 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.
  • Engage the parking brake.
  • Consult a qualified specialist workshop.
  • Do not add brake fluid. This will not rectify the malfunction.
Inoperative

Tele Aid Inoperative

 USA only: one or more of the main functions in the mbrace system are malfunctioning.

Canada only: one or more of the main functions of the TELEAID system are malfunctioning.

  • USA only: have the mbrace system checked at a qualified specialist workshop.
  • Canada only: have the TELEAID system checked at a qualified specialist workshop.
Service Required

SRS Malfunction Service Required

 Risk of injury

There is a malfunction in the SRS (Supplemental Restraint System). The lamp also lights up in the instrument cluster. warning lamp also lights up in the instrument cluster.

  • Visit a qualified specialist workshop.
Malfunction Service Required or Front Right Malfunction Service Required

Front Left Malfunction Service Required or Front Right Malfunction Service Required

 Risk of injury

SRS has malfunctioned at the front on the left or right. The lamp also lights up in the instrument cluster. warning lamp also lights up in the instrument cluster.

  • Visit a qualified specialist workshop.
Malfunction Service Required or Rear Right Malfunction Service Required

Rear Left Malfunction Service Required or Rear Right Malfunction Service Required

 Risk of injury

SRS has malfunctioned at the rear on the left or right. The lamp also lights up in the instrument cluster. warning lamp also lights up in the instrument cluster.

  • Visit a qualified specialist workshop.
SRS Malfunction Service Required

Rear Center SRS Malfunction Service Required

 Risk of injury

SRS has malfunctioned at the rear center. The up in the instrument cluster. warning lamp also lights up in the instrument cluster.

  • Visit a qualified specialist workshop.
Curtain Airbag Malfunction Service Required or Right Side Curtain Airbag

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

 Risk of injury

There is a malfunction in the left-hand and/or right-hand window curtain air bag. The in the instrument cluster. warning lamp also lights up in the instrument cluster.

  • Visit a qualified specialist workshop.
Front Passenger Airbag Enabled See Operator's Manual The front-passenger air bag is enabled during the journey, even though:
  • a child, a small adult or an object weighing less than the system's weight threshold is located on the front-passenger seat.
  • the front-passenger seat is unoccupied.

The system may detect objects or forces applying additional weight on the seat.

  • Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions.
  • Engage the parking brake.
  • Switch off the ignition.
  • Open the front-passenger door.
  • Remove the child and the child restraint system from the frontpassenger seat.
  • If necessary, secure the child in a child restraint system on a suitable rear seat.
  • Make sure that there are no objects on the seat adding to the weight.

The system may otherwise detect the additional weight and interpret the seat occupant's weight as greater than it actually is.

  • Keep the seat unoccupied, close the front-passenger door and switch on the ignition.

Observe the lamp and the multifunction display and check the following: Seat unoccupied() indicator lamp and the multifunction display and check the following: Seat unoccupied and ignition switched on:

  • the must light up and remain lit. When the indicator lamp is on, OCS () has deactivated the front-passenger air bag. indicator lamp must light up and remain lit. When the indicator lamp is on, OCS () has deactivated the front-passenger air bag.
  • the Front Passenger Airbag Enabled See Operator's Manual or Front Passenger Airbag Disabl'd See Operator's Manual display messages must not appear in the multifunction display. Wait for a period of 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 fulfilled, the front-passenger seat can be occupied again. Whether the lamp remains lit or goes out depends on how OCS classifies the occupant. indicator lamp remains lit or goes out depends on how OCS classifies the occupant. If the conditions are not fulfilled, the system is not operating correctly.
 
  • Visit a qualified specialist workshop immediately.
Front Passenger Airbag Disabl'd See Operator's Manual 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.
  • Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions.
  • Engage the parking brake.
  • Switch off the ignition.
  • Have the occupant get out of the vehicle.
  • Keep the seat unoccupied, close the front-passenger door and switch on the ignition.

Observe the lamp and the multifunction display and check the following: Seat unoccupied() indicator lamp and the multifunction display and check the following: Seat unoccupied and ignition switched on:

  • the must light up and remain lit. When the indicator lamp is on, OCS () has deactivated the front-passenger air bag. indicator lamp must light up and remain lit. When the indicator lamp is on, OCS () has deactivated the front-passenger air bag.
  • the Front Passenger Airbag Enabled See Operator's Manual or Front Passenger Airbag Disabled See Operator's Manual display messages must not appear in the multifunction display. Wait for a period of 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 fulfilled, the front-passenger seat can be occupied again. Whether the lamp remains lit or goes out depends on how OCS classifies the occupant. indicator lamp remains lit or goes out depends on how OCS classifies the occupant. If the conditions are not fulfilled, the system is not operating correctly.

  • Visit a qualified specialist workshop immediately.

WARNING 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.

WARNING 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.

WARNING WARNING

If the even after performing the above corrective steps, do not have any children 12 years 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.

    See also:

    Problems with the seat heating
    The seat heating has switched off prematurely or cannot be switched on. The vehicle's electrical system voltage is too low because too many electrical consumers are switched on. X Switch off ...

    Important safety notes
    For reasons of safety, Mercedes-Benz recommends that you drive with the lights switched on even during the daytime. In some countries, operation of the headlamps varies due to legal requirements a ...

    Panic alarm
    To activate: press button 1 for at least one second. An alarm sounds and the exterior lighting flashes. To deactivate: press button 1 again. or Insert the SmartKey into the ignition loc ...