2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

Front Speed Sensor: Removal

HINT.

  • Use the same procedure for the RH side and LH side.
  • The procedure listed below is for the LH side.
  • If the sensor rotor needs to be replaced, replace it together with the front axle hub sub-assembly with front speed sensor.
  1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).
  2. REMOVE FRONT WHEEL 
  3. DISCONNECT FRONT SPEED SENSOR WIRE 
    1. Disconnect the front speed sensor wire from the front speed sensor.
  4. SEPARATE FRONT DISC BRAKE CYLINDER ASSEMBLY  (See REMOVAL )
  5. REMOVE FRONT DISC  (See REMOVAL )
  6. REMOVE FRONT AXLE HUB SUB-ASSEMBLY WITH FRONT SPEED SENSOR  (See REMOVAL )
    Fig 1: Disconnecting Front Speed Sensor Wire From Front Speed Sensor
    G05319576Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE FRONT SPEED SENSOR 
    1. Install 3 hub nuts to the hub bolts. Hold the front axle hub sub-assembly in a vise between aluminum plates.
      NOTE: Replace the hub and bearing assembly if it is dropped or receives a strong shock.
    2. Using SST, remove the front speed sensor from the front axle hub sub-assembly.

      SST 09520-24010, 09950-00020, 09950-00030 

      NOTE:
      • Keep the sensor away from magnets.
      • Pull the front speed sensor off straight, taking care not to make contact with the speed sensor rotor.
      • If the speed sensor rotor is damaged or deformed, replace the front axle hub sub-assembly.
      • Do not scratch the area where the speed sensor contacts the front axle hub sub-assembly.
      • Do not allow foreign matter to attach to the speed sensor rotor.
        Fig 2: Removing Front Speed Sensor From Front Axle Hub Sub-Assembly
        G05752699Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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