Power Door Lock Control System: Precaution: Precaution

WARNING: This page is about a different car, the 2011 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

PRECAUTIONS WHEN USING TECHSTREAM
1. When using the Techstream to troubleshoot the power door lock control system:
  Connect the Techstream to the DLC3 while the engine switch is off, and turn a door courtesy light switch on and off at 1.5-second intervals until communication between the Techstream and vehicle begins.