LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

strange electrical happenings on my 92ls

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Old 05-06-09 | 10:06 AM
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Default strange electrical happenings on my 92ls

Since the battery died some months ago, the electrical system is doing some strange stuff. 1. sometime the headlights will turn off when I pull key and open door, some times it won't. 2. auto tilt works right most of the time, 3. door locks- 3 doors lock easily, the driver door sometimes, most of the time I lock it manually. 4. auto door lock when starting, it locks then unlocks.
Could this be related to a control module, anyone else have these issues. Again it all started when I had to jump start. I was leaving the lights on when exiting, figuring that the car would shut them off. went 2-3 weeks of not turning off before battery died.

Thanks for any input!
Old 05-07-09 | 10:45 PM
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Perhaps the wiring loom at the trunk hinge is on the fritz? I have heard countless times the madness this thing causes.

Evidentally the wiring becomes twisted, frayed and frazzled and causes and array of electrical poltergeists within several circuits in the cars electrical systems.

Personally, I think there should have been recall on these things, as well as the power steering pumps, since both seem to have plagued EVERY 90-94 LS400 in existance (or soon will be) but then what do I know?
Old 05-08-09 | 09:41 AM
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Thanks for the headsup, I'll check into the loom.
Old 05-09-09 | 10:28 PM
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Sounds like the car may have an aftermarket keyless entry system installed. Did the car come with any key fobs that aren't branded Lexus?
Old 05-10-09 | 09:06 AM
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Nope, it came w/ 2 keys, one standard key and one lexus remote unlock button in key, that I never had repaired or attempted to get working, yet.
Old 05-12-09 | 03:00 PM
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A new elect issue. I switch from power to economy mode and the past 400 miles (tank of gas) my MPGs got worse and power has increased. I guess a pcm reset is in my near future!
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