Audi A8   Controls   Instruments and warning/indicator lamps  Warning and indicator lamps
The warning lamp lights up when the parking brake is applied. The warning lamp will light up for about 20 seconds if the parking brake is applied with the ignition switched off.
Caution: Vehicle parked too steep
If the warning lamp flashes and the message appears, the brake may not be strong enough to hold the vehicle. The brakes have overheated. The vehicle can roll away, even on a gentle slope.
Press brake pedal to release parking brake
To release the parking brake, press the brake pedal and simultaneously press the switch (alternatively, use the auto release function Link).
Parking brake!
There is a malfunction in the parking brake. Drive to a qualified workshop without delay and have the fault rectified.
Note
For further information on the parking brake refer to Link.

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