Last Modified: 05-13-2024 6.11:8.1.0 Doc ID: RM100000001N38O
Model Year Start: 2021 Model: Corolla Prod Date Range: [04/2020 -           ]
Title: PARKING BRAKE: FORCED RELEASE (for HV Model): OPERATION METHOD; 2021 - 2025 MY Corolla Corolla HV [04/2020 -        ]

OPERATION METHOD

PROCEDURE

1. PRECAUTION

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2. DISCONNECT REAR SEAT CENTER LAP TYPE BELT ASSEMBLY

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3. REMOVE REAR SEAT CUSHION ASSEMBLY

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4. REMOVE REAR SEAT CUSHION LOCK HOOK

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5. REMOVE REAR DOOR SCUFF PLATE LH

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6. REMOVE REAR DOOR SCUFF PLATE RH

HINT:

Use the same procedure as for the LH side.

7. SEPARATE REAR DOOR OPENING TRIM WEATHERSTRIP LH

(a) Separate the rear door opening trim weatherstrip LH.

NOTICE:

Be careful not to damage the rear door opening trim weatherstrip LH.

8. SEPARATE REAR DOOR OPENING TRIM WEATHERSTRIP RH

HINT:

Use the same procedure as for the LH side.

9. REMOVE REAR UNDER SIDE COVER LH

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10. REMOVE REAR UNDER SIDE COVER RH

HINT:

Use the same procedure as for the LH side.

11. SEPARATE REAR SEAT SIDE GARNISH LH (w/o Rear Seat Side Airbag)

(a) Disengage the clip and separate the rear seat side garnish LH until the No. 2 parking brake wire assembly connectors can be seen.

NOTICE:

Be careful not to damage the rear seat side garnish LH.

12. SEPARATE REAR SEAT SIDE GARNISH LH (w/ Rear Seat Side Airbag)

(a) Disengage the clip and separate the rear seat side garnish LH until the No. 2 parking brake wire assembly connectors can be seen.

NOTICE:

Be careful not to damage the rear seat side garnish LH.

13. SEPARATE REAR SEAT SIDE GARNISH RH

HINT:

Use the same procedure as for the LH side.

14. PARKING BRAKE FORCED RELEASE

CAUTION:

Work on a level surface to ensure safety.

NOTICE:

  • To release the parking brake, follow the procedure for when using SST.
  • If the parking brake cannot be released, follow the procedure for when not using SST.
  • When moving the vehicle after releasing the parking brake, install all parts and do not connect the 2 connectors shown in the illustration.
  • If the power switch is on (IG) or the engine is started with the 2 connectors disconnected, a DTC may be stored. Clear any DTCs after performing work.

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(a) When using SST:

(1) Park the vehicle on a level surface and move the shift lever to P.

(2) Turn the power switch off and chock the wheels.

(3) Disconnect the 2 connectors shown in the illustration.

(4) Connect SST (09756-48020) to SST (09756-48060).

SST: 09756-48020

SST: 09756-48060

*a

Brake Pedal

*b

Auxiliary Battery

*c

SST (09756-48020)

*d

SST (09756-48060)

*e

Release Button

*f

Finished Light

Connector

-

-

(5) Connect SST (09756-48060) to the 2 connectors inside of the vehicle.

(6) Connect SST (09756-48020) to the auxiliary battery from the outside of the vehicle.

(7) Push the release button on SST (09756-48020) with the brake pedal depressed.

CAUTION:

The vehicle may suddenly move when the parking brake is released. Make sure to perform the release operation with the brake pedal depressed.

HINT:

  • Confirm that the parking brake is operating by listening for operation sounds.
  • If no operation sounds are heard, push the release button on SST (09756-48020) with the brake pedal depressed.
  • The parking brake may not release if the auxiliary battery voltage is too low. In this case, perform the release operation again using a fully charged or new auxiliary battery.

(8) When the finished light of SST (09756-48020) illuminates, release the brake pedal.

(9) Move the vehicle forward and rearward to check that the parking brake is released.

CAUTION:

Be careful when performing this operation. The vehicle may suddenly move.

NOTICE:

  • When moving the vehicle after releasing the parking brake, check that the 2 connectors are disconnected.
  • The brake warning light (yellow) will illuminate when the vehicle is moved after releasing the parking brake.

(b) When not using SST:

NOTICE:

Perform the following procedure only when the parking brake cannot be released using SST.

HINT:

  • Use the same procedure for the RH side and LH side.
  • The following procedure is for the LH side.

(1) Park the vehicle on a level surface and check that the shift lever is in P.

(2) Turn the power switch off and check that the wheels are chocked.

(3) Check that the 2 connectors shown in the illustration have been disconnected.

(4) Remove the rear wheel.

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CAUTION:

When using a jack to lift the vehicle, make sure to support the vehicle using safety stands. Do not work on the vehicle with it supported only by a jack.

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(5) Disconnect the No. 2 parking brake wire assembly connector from the parking brake actuator assembly.

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(6) Remove the parking brake actuator assembly from the rear disc brake cylinder assembly.

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(7) Insert an L-shaped T45 "TORX" wrench into the rear disc brake cylinder assembly.

(8) Turn the L-shaped T45 "TORX" wrench 2 full rotations clockwise to release the parking brake lock.

NOTICE:

  • When moving the vehicle after releasing the parking brake, install all parts and do not connect the 2 connectors shown in the illustration.
  • The brake warning light (yellow) will illuminate when the vehicle is moved after releasing the parking brake.