Note: Bleeding an ABS brake system takes longer than bleeding a normal brake system.
Guidelines for bleeding
When reconditioning or replacing brake calipers, it is generally sufficient to bleed the relevant brake line as follows.
The brake pedal must be depressed throughout the operation. This is so that the brake system is not drained of brake fluid.
If the braking system has been completely or partly drained, bleed the
whole system. A bleeding unit must be used that can pressurize the
brake system to 0.2 - 0.3 MPa (29.0 - 43.5 psi) .
Note: Use only suitable DOT 4+brake fluid. Never reuse brake fluid. Always keep brake fluid well sealed in its original packaging.
Preparations
Switch off the ignition.
Clean around the brake fluid reservoir filler cap.
Take out the special brake fluid collection bottle.
Connect the bleeding unit
Connect the bleeding unit to the brake fluid reservoir. Follow the
manufacturer's instructions for connecting and using bleeding unit.
Pressurize the brake system. Check the connection to the brake fluid reservoir.
Raise the car and remove the wheels
Bleeding the left front wheel (right wheel on right-hand drive cars)
Remove the protective cap from the bleed nipple. Connect the hose from the collection bottle.
Open the bleed nipple. Close it when there are no more air bubbles in the fluid coming out.
Tighten the bleed nipple.
Remove the hose from the bleed nipple. Reinstall the protective cap.
Bleeding the other wheels
Continue to bleed the other wheels as for the left front wheel
Check for any leakage from the bleed nipples.
Depressurize the brake system
Close the cock on the pressure line. Open a nipple and close it again.
Checking for air in the brake system and for brake fluid leakage
See Hydraulic System, Brake Line for procedure found in replacing brake pipe between master cylinder and ABS unit.
