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Pre-Collision System: Precaution

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the following system after the cable is reconnected.
SYSTEM NAME REFERENCE

System Name See Procedure
Power Window Control System INITIALIZATION
  1. TROUBLESHOOTING PRECAUTIONS 
    1. If a terminal contact point malfunction or part installation problem occurs, removal and reinstallation of the suspected part may return the system to normal. However, be aware that the normal condition may only be temporary
    2. Before disconnecting connectors or removing/ installing parts, determine the malfunctioning area by checking and writing down the vehicle's condition at the time of the malfunction (DTC outputs, etc).
    3. Be sure to check for DTC s related to other systems. The pre-collision system may be influenced by malfunctions in other systems.
  2. HANDLING PRECAUTIONS 
    1. When removing and installing the ECU, sensor, switch or other pre-collision system related parts, perform the following:
      • Make sure the engine switch is off unless otherwise specified in the inspection procedures.
      • After the removal/installation, check for DTC s and confirm that a normal system code is output.