Brake bleeding is only performed if air has entered the ABS-system's hydraulic unit, or in case of reduced brake function when the ABS-system has activated the ABS-function. Brake bleeding is performed separately on each wheel.
Check all hydraulic connections and couplings if the ABS hydraulic unit has been replaced.
Fill the brake fluid reservoir to max. level.
Adjust the pressure to between 2 and 2.5 bar.
Make sure that the battery is sufficiently charged. Low battery voltage may impact the brake bleeding process.
Test conditions:
Battery voltage above 11.5 V.
Ignition on, engine off.
Procedure:
Select function for the wheel that is to be bled, press "OK".
Bleeding is performed in the following sequence:
Left rear wheel
Left front wheel
Right front wheel
Right rear wheel
Follow the instructions in the dialogue box.
Press "OK" to start the bleeding function.
Bleeding in progress.
A dialogue box shows: "Operation successful" or "Operation failed".
If air remains, repeat the bleeding function.
The function is done.
If the operation failed, check test conditions.