When you switch on the ignition, some of the warning and indicator lamps light up briefly to show that the associated systems are working properly. These systems are marked with a 
in the following tables. If one of these warning/indicator lamps does not light up, there is a fault in the associated system.
in the following tables. If one of these warning/indicator lamps does not light up, there is a fault in the associated system.| Red warning lamps | |
 |
Brake system
Link |
 |
Electro-mechanical parking brake
Link |
 |
Seat belt
Link |
 |
Electro-mechanical power steering
Link |
 |
Alternator
Link |
 |
Engine oil pressure
Link |
 |
Engine oil level
Link |
 |
Cooling system
Link |
AdBlue  |
AdBlue*
Link |
AdBlue  |
AdBlue*
Link |
 |
Steering lock
Link |
 |
Ignition lock
Link |
 |
Speed warning*
Link |
 |
Speed warning*
Link |
 |
Adaptive cruise control*
Link |
| Yellow indicator lamps | |
 |
Electronic stabilisation control (ESC)
Link |
 |
Electronic stabilisation control (ESC)
Link |
     |
Electronic stabilisation control (ESC)
Link |
 |
Anti-lock brake system (ABS)
Link |
 |
Safety systems
Link |
 |
Brake pads
Link |
 |
Electro-mechanical parking brake
Link |
 |
Tyre pressure*
Link |
   |
Tyre pressure*
Link |
|
Engine management system
(petrol engines)
Link |
 |
Engine management system
(diesel engines)
Link |
 |
Emission control system
Link |
 |
Diesel particulate filter*
Link |
 |
Engine speed governing*
Link |
 |
Engine oil level
Link |
 |
Engine oil sensor
Link |
 |
Battery charge
Link |
 |
Fuel tank system
Link |
 |
Engine temperature*
Link |
AdBlue  |
AdBlue*
Link |
AdBlue  |
AdBlue*
Link |
 |
Washer fluid level
Link |
 |
Convenience key*
Link |
 |
Battery in remote control key
Link |
 |
Bulb monitor*
Link |
 |
Front fog lights*
Link |
 |
Rear fog light
Link |
 |
Dynamic headlight range control*
Link |
 |
Adaptive light*
Link |
 |
Light sensor/rain sensor*
Link |
 |
Active lane assist*
Link |
 |
Suspension control*
Link |
 |
Sport differential*
Link |
 |
Ignition lock
Link |
 |
Steering lock
Link |
 |
Windscreen wipers
Link |
 |
Electro-mechanical power steering, dynamic steering*
Link |
 |
Gearbox:
multitronic, tiptronic, S tronic Link |
 |
Gearbox:
S tronic Link |
| Further indicator lamps | |
  |
Turn signals
Link |
 |
Trailer turn signals*
Link |
 |
Cruise control system*
Link |
 |
Adaptive cruise control*
Link |
 |
Adaptive cruise control*
Link |
 |
Hold assist*
Link |
 |
Active lane assist*
Link |
 |
Start/stop system*
Link |
 |
Start/stop system*
Link |
 |
Rest recommendation*
Link |
 |
Main beam assist*
Link |
 |
Main beam headlights
Link, Link |