This function is used when bleeding the anti-lock brake system (ABS). This is only necessary when one of the chambers in the brake fluid reservoir has been empty, or when replacing brake parts or brake fluid.
When bleeding air or replacing the brake fluid, approx. 2 litres of brake fluid is needed. Manual bleeding must be performed before this function is run.
Bleeding is performed in a sequence with several steps to be carried out by the user.
Recommended bleed sequence.
Rear right wheel.
Rear left wheel
Front left wheel
Front right wheel.
Test conditions:
Battery voltage above 12 V.
Ignition on, engine off.
Supply of brake fluid.
Correct brake fluid level.
Clean the bleed nipples, and connect hoses for bleeding.
Procedure step 1:
Select the function for the respective wheel and follow the instructions in the dialogue boxes.
Open the bleed nipple. Press "OK" to continue.
Pump the brake pedal for the duration of the procedure. Press "OK" to continue.
Bleeding in progress.
Depress the brake pedal and hold it down. Press "OK" to continue.
Close the bleed nipple. Press "OK" to continue.
Release the brake pedal. Press "OK" to continue.
Fill with brake fluid.
Once all the wheels have been bled, they must be bled once more before "Procedure step 2" can be carried out.
Procedure step 2:
Select the "Bleed precharge pump" function and follow the instructions in the dialogue boxes.
Connect the bleed hose to the front left bleed nipple.
Open the bleed nipple. Press "OK".
Keep the pedal released for the entire sequence.
Bleeding in progress.
Close the bleed nipple. Press "OK".
Bleeding complete. Press "OK".
Once the bleed procedure is complete, check the brake fluid level and read out the trouble codes. Any faults must be repaired and cleared, and require the bleed procedure to be repeated.