Description & Operation
WARNING: This page is about a different car, the 2003 Lexus GS 430, 2003 Lexus GS 300, 2002 Lexus GS 430, and 2002 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Vehicles are equipped with air bag supplemental restraint system. Before attempting any repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in AIR BAG RESTRAINT SYSTEMS
article.
CAUTION:
When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES
article in GENERAL INFORMATION before disconnecting battery.
The body control system consists of 2 separate Electronic Control Units (ECUs). The body ECU No. 1 controls anti-theft, power door locks, remote keyless entry (wireless controls), luggage compartment door opener and passenger's seat belt warning indicator. The body ECU No. 2 controls light auto turn off, automatic light control, illuminated entry, key reminder, fog light, driver seat belt warning indicator, brake fluid level warning indicator and clock.