Troubleshooting
Electromechanical brake servo failure
Do not drive on!
Warning lamp lights up red.
A text message may also be displayed. Press the brake pedal firmly as the braking distance will increase due to the
lack of brake servo.
—Seek expert assistance immediately.
Electromechanical brake servo fault
Indicator lamp lights up yellow.
A text message is displayed for a few seconds.
The brake pedal may pulsate when pressed. The brake pedal must be pressed more firmly as the braking distance will
increase due to the reduced brake servo.
—Go to a qualified workshop.
Anti-lock brake system failure or fault
Indicator lamp lights up yellow.
—Go to a qualified workshop. The vehicle can be braked without the anti-lock brake system.
ESC/TCS is taking corrective action
Indicator lamp flashes yellow.
ESC switched off for technical reasons
Indicator lamp lights up yellow.
—Switch the ignition on and off.
—Drive a short distance at a speed of 15–20 km/h(9–12 mph) if necessary.
—Drive to a qualified workshop if the indicator lamp continues to light up.
TCS switched off manually
Indicator lamp lights up yellow.
The brake support systems make noises
Noises may be heard when the brake support systems are performing control interventions.
WARNING
● The control function of the ABS may have failed if the brake warning lamp lights up together with the ABS
indicator lamp . This can cause the rear wheels to lock quickly when you brake. Locked rear wheels can lead to a
loss of control of the vehicle. If possible, reduce your speed and drive carefully at low speed to the nearest
qualified workshop in order to have the brake system tested. Avoid sudden braking and driving manoeuvres on
275