Operation CHARM: Car repair manuals for everyone.

Brake System Indicator Lamps Overview






Brake System Indicator Lamps Overview






1 Electronic Stabilization Program (ESP)

Blinks when driving if ESP or the traction control engages regularly.

Comes on when ignition is switched on and goes out after a short self-check.

Comes on if there is an ESP system malfunction.

Comes on if there is an ABS system malfunction because ESP and ABS work together.

Comes on during sensor programming if:

The battery was disconnected and connected.

Vehicle was started with jump start.

The battery is too weak.

After the sensor programming procedure, the ESP light goes out after driving a short distance.

If the ESP/ASR and the ABS indicator lamps illuminate together, this means there is a malfunction in the ABS and in the electronic differential lock.

The vehicle can still be braked as normally, however the ABS will not work.

2 Electronic Stabilization Program (ESP) Off

3 Electromechanical Parking Brake

Blinks after engaging the electromechanical parking brake if the brake pressure is not sufficient to prevent the vehicle from rolling.

Lights up when the electromechanical parking brake is engaged and the ignition is turned on.

Lights up for 20 seconds when the electromechanical parking brake is engaged and the ignition is switched off.

If the indicator lamp blinks and a driver message appears, then there is not enough braking force available for the vehicle.

4 Brake System

Turns on when the brake fluid is too low.

Turns on if there is a malfunction in the ABS system.

Turn on if there is a malfunction in the electromechanical parking brake.

Turns on when a brake pad has reached its wear limit.

Turns on with the ABS indicator lamp when the ABS system malfunctions.

Blinks when there is a malfunction in the brake system.

5 ABS Indicator Lamp

The indicator lamp monitors the ABS and the Electronic Differential Lock (EDL).

Lights up for several seconds when ignition is switched on and goes out after an automatic ABS system self-check if there are no malfunctions in the ABS system.

There is an ABS malfunction if the indicator light:

Does not light up when ignition is switched on.

Does not go out after a few seconds.

Lights up while driving.

ABS malfunctions have no effect on the brake system. However, a change in braking behavior should be checked.

The Electronic Differential Lock (EDL) and ABS work together. The ABS indicator light lights up when the EDL malfunctions.

The ABS, ESP and the brake pressure allocation have malfunction when the ABS, ESP and ASR indicator lamps turn on together with the brake system indicator lamp.