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Home >> Lexus >> 2023 >> LS 500h >> Repair and Diagnosis >> Brakes >> Parking Brake System >> Electric Parking Brake System - Service Information >> Electric Parking Brake Actuator >> Removal [10/2017 - 09/2018] >> Procedure

Removal [10/2017 - 09/2018]: Procedure

  1. RELEASE PARKING BRAKE 
    1. Turn off the electric parking brake AUTO function.
    2. With the power switch on (IG), operate the electric parking brake switch assembly to release the parking brake. Then turn the power switch off.

      HINT: 

      If the parking brake cannot be released, perform the forced release of parking brake.

  2. FORCED RELEASE PARKING BRAKE 
    NOTE:
    • If the parking brake cannot be released by operating the electric parking brake switch assembly, perform forced release by using electric release SST.

      Refer to OPERATION METHOD [10/2017 - 10/2020] 

    • If the parking brake cannot be released even when using electric release SST due to a malfunction in the parking brake actuator with bracket assembly, perform the following procedures.
    1. Remove the No. 1 differential support protector.

      Refer to PROCEDURE - Step 2

    2. Using a 4 mm long socket hexagon wrench, remove the bolt and release cable cover.
      GTY776879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the cap.
      GTY791944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Pull Out Direction
    4. Insert a 4 mm socket hexagon wrench into the release cable and while pushing down, rotate it counterclockwise.
      GTY797814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Push Direction
      Rotate Direction
    5. After checking that the parking brake has been released, install the cap.
      GTY778315Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Install in this Direction
      NOTE:

      When installing the cap, make sure it inserted facing the correct direction.

    6. Using a 4 mm long socket hexagon wrench, install the release cable cover with the bolt.

      Torque: 3.0 N.m (31 kgf/cm, 27 in.lbf) 

      GTY776865Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Install the No. 1 differential support protector.

      Refer to PROCEDURE - Step 8

  3. PRECAUTION 
    NOTE:

    After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

    Refer to PRECAUTION [10/2017 - 09/2019]

  4. REMOVE REAR SUSPENSION MEMBER SUB-ASSEMBLY 

    Refer to REMOVAL [10/2017 - 09/2018]

  5. REMOVE PARKING BRAKE ACTUATOR ASSEMBLY WITH BRACKET 
    1. Remove the bolt and 6 nuts to disconnect the parking brake actuator assembly with bracket from the rear suspension member sub-assembly.
      GTY798738Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the 2 clamps from the rear suspension member sub-assembly.
      GTY812306Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 3 nuts and parking brake actuator assembly with bracket.
      GTY812724Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. REMOVE CABLE SUPPORT BRACKET 
    1. Remove the cable support bracket in the direction indicated by the arrow shown in the illustration.
      GTY812923Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE NO. 2 CABLE SUPPORT BRACKET 
    1. Remove the No. 2 cable support bracket in the direction indicated by the arrow shown in the illustration.
      GTY812922Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE NO. 1 CABLE SUPPORT BRACKET 
    GTY835557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the No. 1 cable support bracket in the direction indicated by the arrow shown in the illustration.
  9. REMOVE NO. 2 ACTUATOR HARNESS CLAMP 
    1. Disconnect the clamp and remove the No. 2 actuator harness clamp.
      GTY812920Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. REMOVE NO. 1 ACTUATOR HARNESS CLAMP 
    1. Disconnect the 2 clamps and remove the No. 1 actuator harness clamp.
      GTY812927Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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