Pressure

WARNING: Do not move the vehicle until a firm brake pedal is obtained. Air in the brake system can cause loss of brakes with possible personal injury.

NOTE: On vehicles equipped with ABS, the hydraulic modulator must be bled prior to the brake calipers and wheel cylinders. Service and Repair

WHEN TO PERFORM BLEED PROCEDURE
A bleeding operation is necessary anytime a brake pipe or hose has been opened and air has been introduced into the system. It may be necessary to bleed the hydraulic system at all four wheels if air has been introduced through a low fluid level or by disconnecting brake pipes at the master cylinder. If a brake pipe or hose is disconnected at only one wheel, then only that wheel cylinder/caliper needs to be bled. If pipes are disconnected at any fitting located between the master cylinder and the brakes, then the brake system served by the disconnected pipe must be bled.

NOTE:
^ There is no bleeder valve for the right rear brake. The rear brakes can only be bled through the bleeder valve located on the left rear brake.
^ Bleed wheel cylinders/calipers in the following sequence: (1) Rear circuit (bleeder valve is at left rear wheel cylinder), (2) Right front, (3) Left front.
^ Tools Required:
- J 29532, or equivalent diaphragm type brake bleeder.
- J 37762, or equivalent pressure brake bleeder adapter.
^ Pressure bleeding equipment must be the diaphragm type and must have a rubber diaphragm between the air supply and the brake fluid to prevent air, moisture, oil and other contaminants from entering the hydraulic system.

1. Install a bleeder adapter to the master cylinder.
2. Charge a brake bleeder to 140 to 172 kPa (20 to 25 psi).
3. Connect brake bleeder line to bleeder adapter and open line valve.
4. Raise and suitably support vehicle.
5. Attach a transparent hose to the bleeder valve and submerge opposite end in a clean container partially filled with brake fluid.
6. Place a proper size box end wrench over bleeder valve. Open valve at least 1/2 to 3/4 turn and allow fluid to flow until no air is seen in the fluid. Do not allow brake bleeder to run out of fluid. If fluid should run out, air will enter system and entire bleeding procedure must be repeated.
7. Close the bleeder valve, making sure it seals.
8. Repeat steps 5, 6 and 7 until all calipers and wheel cylinders have been bled then tighten wheel cylinder/caliper bleeder valve to 16 Nm (12 ft. lbs.).
9. Lower vehicle.
10. Check for a firm brake pedal action. If brake pedal appears spongy, it will be necessary to repeat entire procedure.
11. Remove bleeder adapter and bleeder adapter from master cylinder.