2026-02-09

Brake Fluid Bleed/Flush - Master Cylinder (Add-On) (Maintenance)

Correction code 33038803 FRT 0.30 NOTE: Unless otherwise explicitly stated in the procedure, the correction code and FRT listed above reflect all of the work required to perform this procedure, including the linked procedures. Do not stack correction codes unless explicitly told to do so. NOTE: See Flat Rate Times to learn more about FRTs and how they are created. NOTE: See Personal Protection to make sure you are wearing proper PPE when performing the procedure below. NOTE: See Ergonomic Precautions for safe and healthy working practices.

  • 2026-02-09: Updated reference to Service Mode Plus.
  • 2025-04-10: Added torque values for different brake calipers.
Equipment:
  • 1080579-00-A - Pneumatic Brake Bleeder
  • 1080578-00-B - Brake Bleed Adapter M3/Y
Warning IconA warning icon, calling your attention to a possibly risky situation
CAUTION
Brake fluid dissolves paint. Have clean towels and plenty of water standing by to wash spilled brake fluid off painted surfaces.
Informational PurposesAn informational icon, calling your attention
Note
Dispose of used brake fluid in a manner consistent with local environmental codes.

Procedure

The following procedures are not standalone. They conditionally supplement DPB bleed procedures, and require that the rear underhood apron and front wheels have already been removed.
  1. Enable Service Mode Plus. See Service Mode Plus.
  2. Clean the area around the brake fluid reservoir breather cap and remove the cap.
  3. Add clean brake fluid to the full level in the bleeder reservoir.
  4. Add clean brake fluid to the MAX level in the reservoir.
  5. Install the pressure bleeder adapter onto the vehicle brake reservoir.
  6. Connect power supply to the bleeder tool, and then turn the bleeder tool on.
  7. Set the brake bleed reservoir pressure to 30 PSI, and then attach the brake bleed reservoir to the brake bleed adapter.
  8. Bleed the LH front caliper.
    1. Remove the LH front caliper inner bleed valve cover, and then install the fluid catcher.
    2. On the touchscreen, tap the Service Mode "wrench" (at the bottom of the touchscreen UI), and then tap Chassis > Brakes > Enter/Exit Assembly Mode , select SET in the drop list, click Run, and allow the routine to complete.
    3. Open the inner bleed valve and watch the fluid as it flows out of the caliper.
    4. Have the assistant fully press the brake pedal for 2 seconds and then release.
    5. Press the brake pedal again. Repeat the bleed process until the LH front caliper fluid is free of air bubbles and old fluids.
    6. Remove the fluid catcher, and then torque the LH front caliper inner bleed valve and install the inner valve cap.

      Mando brake calipers

      10 Nm (7.4 lbs-ft)

      Hitachi brake calipers

      12 Nm (8.8 lbs-ft)

      Brembo brake calipers

      18.5 Nm (13.6 lbs-ft)
      Informational PurposesAn informational icon, calling your attention
      TIp
      Use of the following tool(s) is recommended:
      • 11 mm socket
  9. Repeat step 8 for the RH front caliper.
  10. On the touchscreen, tap the Service Mode "wrench" (at the bottom of the touchscreen UI), and then tap Chassis > Brakes > Enter/Exit Assembly Mode , select UNSET in the drop list, click Run, and allow the routine to complete.
  11. Turn off and remove the pressure brake bleeder kit from the vehicle.
  12. Check the brake fluid level and top off as necessary.
  13. Install the service brake reservoir cap.
  14. Return to the procedure that required this master cylinder bleed (add-on) procedure.