Lights
 Display messages about LEDs:
 
Display messages about LEDs:
This display message will only appear if all LEDs have failed.
| Display messages | Possible causes/consequences and  Solutions | 
|  | The left or right-hand cornering light is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The left or right-hand low-beam headlamp is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The left or right-hand trailer tail lamp is faulty. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The left or right-hand trailer turn signal lamp is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The trailer brake lamp is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The rear left-hand or rear right-hand turn signal is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The front left-hand or front right-hand turn signal is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The turn signal in the left-hand or right-hand exterior mirror is 
		defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The high-mounted brake lamp is faulty. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The left or right-hand brake lamp is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The left or right-hand high beam is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The license plate lamps are faulty. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The rear fog lamp is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The front left or front right parking or standing lamp is 
		defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The backup lamp is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The left or right front side marker lamp is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The left or right-hand tail lamp is defective. or The rear left or right side marker lamp is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The left or right-hand daytime running lamp is defective. – Check whether you are permitted to change the bulb yourself. or – Visit a qualified specialist workshop. | 
|  | The active light function is defective. – Visit a qualified specialist workshop. | 
|  | The exterior lighting is defective. – Visit a qualified specialist workshop. | 
|  | The light sensor is defective. – Visit a qualified specialist workshop. | 
|  | The lights are still switched on when you leave the vehicle. A 
		warning tone also sounds. – Turn the light switch to  or  . | 
|  | Adaptive Highbeam Assist is faulty. – Visit a qualified specialist workshop. | 
|  | Adaptive Highbeam Assist is deactivated and temporarily inoperative. 
		Possible causes are: - the windshield in the camera's field of vision is dirty. - visibility is impaired due to heavy rain, snow or fog. – Clean the windshield. If the system detects that the camera is fully functional again, the Adaptive Highbeam Assist Now Available display message is shown. Adaptive Highbeam Assist is operational again. | 
See also:
Important safety notes
   Level control adapts the vehicle level
automatically to the current operating and
driving situation. This results in reduced fuel
consumption and improved handling.
For vehicles with ADS: when y ...
   
Changing the set speed
   When DSR is activated, the set speed can be 
changed to a value between 1 mph and 
10 mph (Canada: between 2 km/h and 
18 km/h) during the journey.
– To increase or decrease the set speed 
in 1 ...
   
Roadside Assistance
   The Mercedes-Benz Roadside Assistance 
Program offers technical help in the event of 
a breakdown. Calls to the toll-free Roadside 
Assistance Hotline are answered by our 
agents 24 hours a day, 3 ...
   
