Audi A4 EPB procedure 2 wheel drive

To test The EPB with the deceloromter is not suitable
Test the service brake in the normal way
To test the EPB :
1. Place the vehicle in the rollers
2. Start the rollers and wait for the "EPB" warning lamp with a line through it to illuminate sometimes accompanied with a message " under diagnosis" displayed on the dash .
3 when the lamp illuminates apply the EPB switch until the required efforts are achieved .

The warning lamp will distinguish by driving out the rollers or using the ignition
The ABS /ESP/ traction control lamp may decide to light up but once all 4 wheels are rolling the warning lamp(s) will go out its just a driver information it does not set any faults.