2015 Audi A7 s line auto 4x4 EPB/service brake rbt

The service brake can be tested in the brake rollers running both together or single.

To test the EPB;
Engine off- ignition on
Start the rollers
Wait a few seconds for the EPB message " park brake diagnosis "to display on the instrument cluster .
Apply the EPB switch,several applications of the EPB switch will be required to achieve the required efforts
If the EPB switch is applied before the park brake goes into test mode - the service brake intervenes and the EPB is not being tested properly,decelromter test is not suitable for the EPB