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For 1990-2009 cars only

Brake Master Cylinder Auxiliary Reservoir Replacement Manual Transmission

Caution: Refer to Brake Fluid Irritant Caution in the Preface section.

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in the Preface section.

Removal Procedure


    Object Number: 890955  Size: SH
  1. Remove the cover from the underhood electrical center, for access to the auxiliary reservoir clutch hose connection.
  2. Pull back on the connector position assurance (CPA) tab of the electrical connector, then disconnect the connector from the brake fluid level sensor.
  3. Cover the top of the underhood electrical center with clean shop towels, to protect from any brake fluid loss.
  4. Place shop towels under the clutch master cylinder and under the brake master cylinder to catch any brake fluid loss.
  5. Remove the brake fluid from the brake master cylinder auxiliary reservoir. Discard the old fluid into an approved container.

  6. Object Number: 851236  Size: SH
  7. Remove the brake master cylinder auxiliary reservoir mounting bolts.
  8. Disconnect the quick-connect fitting on the auxiliary reservoir clutch hose from the clutch master cylinder.
  9. Plug the reservoir clutch hose end to prevent fluid loss and contamination.
  10. Cap the nipple on the clutch master cylinder to prevent fluid loss and contamination.
  11. Disconnect the quick-connect fitting on the auxiliary reservoir brake hose from the brake master cylinder-mounted, or primary reservoir.
  12. Plug the reservoir brake hose end to prevent fluid loss and contamination.
  13. Cap the nipple on the brake master cylinder primary reservoir to prevent fluid loss and contamination.
  14. Carefully remove the auxiliary reservoir clutch hose past the electrical center.
  15. Remove the auxiliary reservoir from the vehicle.

Installation Procedure

  1. Install the auxiliary reservoir into position in the vehicle.
  2. Remove the cap from the nipple on the clutch master cylinder.
  3. Remove the plug from the auxiliary reservoir clutch hose end.

  4. Object Number: 851236  Size: SH
  5. Connect the quick-connect fitting on the reservoir clutch hose to the clutch master cylinder. Ensure that the hose is fully seated to the master cylinder.
  6. Remove the cap from the nipple on the brake primary reservoir.
  7. Remove the plug from the reservoir brake hose end.
  8. Connect the quick-connect fitting on the reservoir brake hose to the brake primary reservoir. Ensure that the hose is fully seated to the reservoir.
  9. Notice: Refer to Fastener Notice in the Preface section.

  10. Install the brake master cylinder auxiliary reservoir mounting bolts.
  11. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  12. Fill the brake master cylinder auxiliary reservoir. Refer to Master Cylinder Reservoir Filling .
  13. Remove the shop towels and discard into an approved container.

  14. Object Number: 890955  Size: SH
  15. Connect the electrical connector to the brake fluid level sensor, then press forward on the CPA tab of the connector to secure.
  16. Install the cover to the underhood electrical center.

Brake Master Cylinder Auxiliary Reservoir Replacement Automatic Transmission

Caution: Refer to Brake Fluid Irritant Caution in the Preface section.

Notice: Refer to Brake Fluid Effects on Paint and Electrical Components Notice in the Preface section.

Removal Procedure


    Object Number: 890955  Size: SH
  1. Remove the cover from the underhood electrical center, for access to disconnect the brake fluid level sensor electrical connector.
  2. Pull back on the connector position assurance (CPA) tab of the electrical connector, then disconnect the connector from the brake fluid level sensor.

  3. Object Number: 890957  Size: SH
  4. Cover the top of the underhood electrical center with clean shop towels, to protect from any brake fluid loss.
  5. Place a shop towel under the brake master cylinder to catch any brake fluid loss.
  6. Remove the brake fluid from the brake master cylinder auxiliary reservoir. Discard the old fluid into an approved container.
  7. Remove the brake master cylinder auxiliary reservoir mounting bolts.
  8. Disconnect the quick-connect fitting on the auxiliary reservoir hose from the master cylinder-mounted, or primary reservoir.
  9. Plug the reservoir hose end to prevent fluid loss and contamination.
  10. Cap the nipple on the master cylinder primary reservoir to prevent fluid loss and contamination.
  11. Remove the auxiliary reservoir from the vehicle.

Installation Procedure


    Object Number: 890957  Size: SH
  1. Remove the cap from the nipple on the brake primary reservoir.
  2. Remove the plug from the auxiliary reservoir hose end.
  3. Connect the quick-connect fitting on the reservoir hose to the primary reservoir. Ensure that the hose is fully seated to the reservoir.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the brake master cylinder auxiliary reservoir mounting bolts.
  6. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

  7. Fill the brake master cylinder auxiliary reservoir. Refer to Master Cylinder Reservoir Filling .
  8. Remove the shop towels and discard into an approved container.

  9. Object Number: 890955  Size: SH
  10. Connect the electrical connector to the brake fluid level sensor, then press forward on the CPA tab of the connector to secure.
  11. Install the cover to the underhood electrical center.