2008 Lexus IS FFACTORY OEM SERVICE PROCEDURE

System Outline

* To reduce the steering effort, the amount of steering assistance required is calculated according to the torque sensor signals and the vehicle speed. The required steering assistance is then output to the motor.

* When an abnormality is found in the system, the power and motor relays (Built into the ECU) are shut off to stop the assistance and the power steering warning light on the combination meter illuminates.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

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

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

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