Description & Operation: Notes

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.

WARNING:

Halogen bulbs have pressurized gas inside and require special handling. They can burst if scratched or dropped. Hold a bulb only by the plastic or metal case. Don't touch the glass part of a bulb with bare hands.
When high voltage socket of discharge headlight is touched with the light control switch in HEAD position, high voltage of 20,000 volts is momentarily generated. This might lead to a serious accident.
Never connect the tester to the high voltage socket of discharge headlight for measurement, as this leads to a serious accident because of high voltage.
When performing operation related to the discharge headlight, make sure to do it in the place with no water or rain to prevent electric shock, with the light control switch OFF, battery terminal removed and connector of the light control ECU disconnected.
When performing operation related to the discharge headlight, make sure to do it after assembling has been completely over and never light up without a bulb installed.
Do not light up the discharge headlight using another power source except vehicle's.
When there is a defect on the discharge headlight or any shock has been applied to it, replace the light with a new one. Even if the light operates normally, there is a possibility that the fail-safe function works.

NOTE: There is a 12-pin driver side junction block-to-body ECU connector that is ONLY accessible after separation from the junction block.