If the warning lamp lights up, there is a fault in the brake system.
Stop vehicle and check brake fluid level
If the warning lamp lights up and the message appears, stop the vehicle and check the brake fluid level Link. Obtain professional assistance if necessary.
Caution! Brake malfunction. Contact workshop
If the ABS indicator lamp 
and ESC indicator lamp 
light up together with the brake warning lamp and this driver message appears, the ABS, ESC and brake force distribution systems have failed WARNING!.
and ESC indicator lamp light up together with the brake warning lamp and this driver message appears, the ABS, ESC and brake force distribution systems have failed WARNING!.
Drive to a qualified workshop without delay and have the fault corrected WARNING!.
Handbrake is applied
If the warning lamp 
and message appear when you drive off, please release the handbrake Link.
and message appear when you drive off, please release the handbrake Link.- Before opening the bonnet and checking the brake fluid level, observe the warning information on Link.
- If the brake fluid level in the reservoir is too low, this could result in an accident. Stop the vehicle and do not drive on. Obtain professional assistance.
- If the brake warning lamp lights up together with the ABS indicator lamp and the ESC indicator lamp, this can mean that the control function of the ESC/ABS is not working. Input from the functions that stabilise the vehicle is no longer available. This could cause the vehicle to skid sideways. Drive carefully to the nearest qualified workshop and have the fault rectified.