LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> LS 600hL >> Repair and Diagnosis >> Brakes >> Traction Control >> Brake Control >> Brake Actuator >> Removal
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Brake Actuator: Removal

NOTE: While the battery is connected, even if the power switch is OFF, the brake control system activates when the brake pedal is depressed or the door courtesy switch turns on. Therefore during servicing of the brake system components, do not operate the brake pedal or open/ close the doors while the battery is connected.
  1. REMOVE V-BANK COVER SUB-ASSEMBLY  (See REMOVAL ).
  2. REMOVE COWL TOP VENTILATOR LOUVER RH  (See REMOVAL ).
  3. REMOVE FRONT WIPER ARM LH  (See REMOVAL ).
  4. REMOVE FRONT WIPER ARM RH  (See REMOVAL ).
  5. REMOVE ENGINE ROOM SIDE COVER LH  (See REMOVAL ).
  6. REMOVE ENGINE ROOM SIDE COVER RH  (See REMOVAL ).
  7. REMOVE FRONT UPPER FENDER PROTECTOR LH  (See REMOVAL ).
  8. REMOVE FRONT UPPER FENDER PROTECTOR RH  (See REMOVAL ).
  9. REMOVE HOOD TO COWL TOP SEAL  (See REMOVAL ).
  10. REMOVE FRONT FENDER TO COWL SIDE SEAL LH  (See REMOVAL ).
  11. REMOVE FRONT FENDER TO COWL SIDE SEAL RH  (See REMOVAL ).
  12. REMOVE COWL TOP VENTILATOR LOUVER PROTECTOR LH  (See REMOVAL ).
  13. REMOVE COWL TOP VENTILATOR LOUVER SUB-ASSEMBLY  (See REMOVAL ).
  14. PERFORM ACCUMULATOR PRESSURE ZERO DOWN 
    CAUTION: Be sure to perform this procedure before removing the brake actuator and brake accumulator pump.
    1. Connect the Intelligent tester or Techstream to the DLC3 with the power switch OFF.
    2. Turn the power switch ON (IG).
    3. Turn the Intelligent tester or Techstream on and perform accumulator zero down by following the prompts displayed on the Intelligent tester or Techstream.

      HINT:

      • Intelligent tester - select: DIAGNOSIS / ABS/ VSC / ELECTRONICALLY CONTROLLED BRAKE SYSTEM UTILITY / ZERO DOWN.
      • Techstream - select. Chassis / ABS/VSC/TRAC / Utility / Electronically Controlled Brake system Utility / Zero Down.
    4. When the buzzer sounds, turn the power switch OFF.
      NOTE: After turning the power switch OFF, do not turn the power switch ON (IG). If the power switch is turned ON (16), the brake accumulator pump operates so that the brake accumulator is accumulated with brake fluid.
  15. REMOVE LUGGAGE COMPARTMENT MAT SUB-ASSEMBLY  (See REMOVAL ).
  16. REMOVE BATTERY SERVICE HOLE COVER LH  (See REMOVAL ).
  17. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    CAUTION: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation.
    NOTE:
    • When disconnecting the cable, some systems need to be initialized after the cable is reconnected (see INITIALIZATION ).
    • After the power switch is turned OFF, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the power switch OFF, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.
  18. REMOVE BATTERY SERVICE HOLE COVER  (See REMOVAL ).
  19. REMOVE SERVICE PLUG GRIP  (See REMOVAL ).
  20. DRAIN BRAKE FLUID 
    NOTE: If brake fluid leaks onto any painted surface, wash or remove it completely.
  21. DISCONNECT NO. 1 MOTOR COOLING PIPE  (See REMOVAL  ).
  22. REMOVE SKID CONTROL ECU  (See REMOVAL  ).
  23. DISCONNECT NO. 3 RELAY BLOCK 
    1. While pushing the claw of the No 3 relay block, pull out the No. 3 relay block and disconnect it from the reservoir bracket.
      NOTE: Do not allow brake fluid to contact the No. 3 relay block.
      Fig 1: Identifying Reservoir Bracket And Relay Block
      G04949699Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  24. REMOVE BRAKE FLUID RESERVOIR  (See REMOVAL ).
  25. REMOVE SKID CONTROL ECU BRACKET  (See REMOVAL  ).
  26. REMOVE NO. 1 RESERVOIR HOSE  (See REMOVAL ).
  27. REMOVE RESERVOIR BRACKET  (See REMOVAL ).
  28. REMOVE FRONT WHEEL 
  29. DISCONNECT BRAKE TUBE 
    1. Release the lock lever and disconnect the brake actuator connector.
      NOTE: Do not allow brake fluid to contact the connector face.
      Fig 2: Releasing Lock Lever
      G04949703Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the 2 brake accumulator pump connectors.
      NOTE: Do not allow brake fluid to contact the connector faces.
      Fig 3: Locating Brake Accumulator Pump Connectors
      G04949820Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using a union nut wrench, disconnect the 6 brake tubes from the actuator.
      Fig 4: Locating Brake Tubes From Actuator
      G05774075Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Use tags or make a note to identify the reconnection locations.
      Fig 5: Identifying Brake Tube To Correct Positions On Brake Actuator
      G05774076Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Using a union nut wrench, disconnect the No. 1 and No 2 brake actuator tubes.
      NOTE: Do not damage the No. 1 and No. 2 brake actuator tubes.
      Fig 6: Locating Brake Actuator Tubes And Union Nut Wrench
      G05774077Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  30. REMOVE BRAKE ACTUATOR AND BRAKE ACCUMULATOR PUMP ASSEMBLY 
    1. Disconnect the No. 1 brake actuator hose from the clamp and then remove the clamp.
      Fig 7: Identifying No 1 Brake Actuator Hose From Clamp
      G04949705Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the front fender liner rear side and then remove the 2 nuts.
    3. Remove the bolt, and the brake actuator and brake accumulator pump.
      NOTE:
      • Do not damage the brake tubes.
      • When removing the brake actuator and brake accumulator pump from the vehicle, do not hold the connector, harness, hose or tube parts.
      • Do not drop the brake actuator and brake accumulator pump. Do not use parts that have been dropped.
        Fig 8: Locating Brake Actuator And Brake Accumulator Pump With Bolt And Nuts
        G05774079Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  31. REMOVE NO. 5 BRAKE ACTUATOR BRACKET 
    1. Remove the bolt and No. 5 brake actuator bracket.
  32. REMOVE NO. 1 BRAKE ACTUATOR HOSE 
    NOTE: When disconnecting the hose, be careful that there is no excessive weight applied to the union of the brake actuator (especially in the union rotation direction).
    Fig 9: Identifying Brake Actuator Bracket And Bolt
    G04949707Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the hose clip and No. 1 brake actuator hose.
      Fig 10: Identifying Brake Actuator Hose And Hose Clip
      G05774081Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  33. REMOVE BRAKE ACTUATOR PROTECTOR 
    1. Remove the protector.
    Fig 11: Identifying Brake Actuator Protector
    G04949709Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  34. REMOVE NO. 2 BRAKE ACTUATOR HOSE 
    NOTE: When disconnecting the hose, be careful that there is no excessive weight applied to the union of the brake accumulator pump (especially in the union rotation direction).
    1. Disconnect the No 2 brake actuator hose from the No 3 brake actuator bracket and then remove the clamp.
    2. Remove the hose clip and No. 2 brake actuator hose.
      Fig 12: Identifying Brake Actuator Hose And Hose Clip
      G04949710Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the hose clip and reservoir connector.
  35. REMOVE NO. 3 BRAKE ACTUATOR TUBE 
    NOTE:
    • Do not damage the No. 3 brake actuator tube, brake actuator and brake accumulator pump.
    • When removing the No. 3 brake actuator tube, hold the tube, brake actuator and brake accumulator pump securely.
      Fig 13: Identifying Brake Actuator Tube
      G04949711Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Using a union nut wrench, disconnect the No 3 brake actuator tube.
      Fig 14: Locating Brake Actuator Tube And Union Nut Wrench
      G05774085Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  36. DISCONNECT BRAKE ACCUMULATOR PUMP CONNECTOR BOX 
    1. Disconnect the brake accumulator pump connector box.
      1. Detach the wiring harness clamp.
      2. Remove the nut and connector box.
        Fig 15: Identifying Brake Accumulator Pump Connector Box And Nut
        G05774086Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  37. REMOVE NO. 4 BRAKE ACTUATOR BRACKET 
    1. Remove the bolt and No. 4 brake actuator bracket.
      Fig 16: Identifying Brake Actuator Bracket And Bolt
      G04949714Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  38. REMOVE BRAKE ACCUMULATOR PUMP 
    1. Break and remove the brake actuator bracket clamp (labeled A), and then remove the brake accumulator pump.
    2. Remove the brake booster pump bush (labeled B) from the brake actuator bracket.
    3. Remove the brake booster pump bushes (labeled C) and brake booster pump collars (labeled D) from the brake accumulator pump.
      Fig 17: Identifying Brake Accumulator Pump And Clamp
      G05774088Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  39. REMOVE BRAKE ACTUATOR 
    1. Remove the 3 bolts, brake actuator bracket and brake actuator.
      Fig 18: Identifying Brake Actuator Bracket And Brake Actuator With Bolts
      G04949717Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 3 cushions and 3 spacers from the brake actuator bracket.
      Fig 19: Identifying Cushions And Spacers From Brake Actuator Bracket
      G04949718Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 3 bolts and No. 3 brake actuator bracket from the brake actuator.
      Fig 20: Identifying Brake Actuator Bracket From Brake Actuator And Bolts
      G04949719Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
scientia non olet · About LEMON Manuals