Steering Lock System: Precaution

WARNING: This page is about a different car, the 2008 Lexus LS 600hL. However, it is still accessible from the selected car via links, so may be relevant.

PRECAUTIONS WHEN WORKING ON ELECTRIC STEERING LOCK
1. After replacing the steering lock actuator assembly (steering lock ECU), perform the key ID code registration.
2. If the steering lock actuator assembly (steering lock ECU) is replaced, open and close the driver's door. The hybrid control system may not start until the driver's door is opened or closed.
  HINT.
  
  Opening and closing the driver's door causes the steering lock actuator assembly (steering lock ECU) to memorize the correct steering lock bar position.
3. If checking for DTCs of the smart access system with push-button start function or if checking the Data List with the power switch OFF, make sure that the driver's door is open.
  HINT:
  
  When the power switch is OFF, the main body ECU may be in sleep mode. If the main body ECU is in sleep mode, it will not be possible for the Intelligent tester or Techstream to communicate with it. To exit the main body ECU sleep mode, perform the following steps: 1) open the driver's door with the power switch OFF, 2) open and close any door several times at 1.5 second intervals.