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Home >> Lexus >> 2017 >> ES 350 >> Repair and Diagnosis >> Steering >> Steering Column >> Steering Column (Service Information) >> Steering Column Assembly >> Disassembly [07/2015 - ] >> Procedure

Disassembly [07/2015 - ]: Procedure

  1. REMOVE STEERING LOCK ACTUATOR ASSEMBLY 
    1. Using a center punch, mark the center of the 2 tapered-head bolts.
    2. Using a 3 to 4 mm (0.118 to 0.157 in.) diameter drill bit, drill a hole in each tapered-head bolt.
    3. for Manual Tilt and Manual Telescopic Steering Column
      1. Using a screw extractor, remove each tapered-head bolt, and then remove the steering lock actuator assembly from the steering column assembly.
        GTY319930Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. for Power Tilt and Power Telescopic Steering Column
      1. Using a screw extractor, remove each tapered-head bolt, and then remove the steering lock actuator assembly from the steering column assembly.
        GTY402385Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. REMOVE POWER STEERING ECU PROTECTOR 
    1. Remove the power steering ECU protector from the power steering ECU with motor assembly.
      GTY404856Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. REMOVE ECU WIRE SUB-ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column) 
    1. Disconnect the 2 connectors from the power steering ECU assembly.
      GTY316176Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the 2 wire harness clamps to remove the ECU wire sub-assembly.
  4. REMOVE POWER STEERING ECU WITH MOTOR ASSEMBLY (for Manual Tilt and Manual Telescopic Steering Column) 
    1. Secure the steering column assembly in a vice using aluminum plates and wooden block as shown in the illustration.
      GTY668478Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Aluminum Plate
      *2 Wooden Block
      NOTE:
      • Do not overtighten the vice, as the steering column assembly may become deformed.
      • Secure the power steering motor assembly so that it is directly upright.
      • Support the steering column assembly with a wooden block or similar item to ensure that it does not fall.
    2. Disconnect the connector from the power steering ECU with motor assembly.
      GTY316193Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the 3 bolts and power steering ECU with motor assembly from the electric power steering column sub-assembly.
      GTY316194Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the electric power steering motor shaft spacer from the electric power steering column sub-assembly.
      GTY322195Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    5. Remove the electric power steering motor shaft damper from the electric power steering column sub-assembly.
      GTY316196Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. REMOVE ECU WIRE SUB-ASSEMBLY (for Power Tilt and Power Telescopic Steering Column) 
    1. Disconnect the 2 connectors from the power steering ECU assembly.
      GTY402386Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disengage the 2 wire harness clamps to remove the ECU wire sub-assembly.
  6. REMOVE POWER STEERING ECU WITH MOTOR ASSEMBLY (for Power Tilt and Power Telescopic Steering Column) 
    1. Disconnect the connector from the power steering ECU with motor assembly.
      GTY402387Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 3 bolts and power steering ECU with motor assembly from the electric power steering column sub-assembly.
      GTY395650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove the electric power steering motor shaft spacer from the electric power steering column sub-assembly.
      GTY395649Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Remove the electric power steering motor shaft damper from the electric power steering column sub-assembly.
      GTY395648Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE MULTIPLEX TILT AND TELESCOPIC ECU (for Power Tilt and Power Telescopic Steering Column) 
    1. Disengage the claw to remove the multiplex tilt and telescopic ECU from the electric power steering column sub-assembly.
      GTY402469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002