LS - 3rd Gen (2001-2006) Discussion topics related to the flagship Lexus LS430

Headlights do not shut off

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Old 04-26-17, 04:11 PM
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lexman52
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Default Headlights do not shut off

Where is the sensor for the headlights to automatically turn off. They do not shut off in any position automatically

Last edited by lexman52; 04-26-17 at 07:11 PM.
Old 05-03-17, 10:07 AM
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lexman52
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Any body know?
Old 05-03-17, 10:26 AM
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OkNowWhat
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Did a bit of searching and found this thread for a different model:

https://www.clublexus.com/forums/gs-...-shut-off.html

The following looks like a possible solution to what you're describing:

Originally Posted by SCGS350
Picked up my vehicle today, here's what got done. "Found left front door courtesy light switch sticking at times and not seeing drivers door opening, causing light to not turn off at times. Rec new courtesy light switch left front door". So that's what got replaced my courtesy light switch, from what I can read the vehicle was never picking up that I had exited it, therefore maintaining the lights on. I' haven't driven the vehicle at night yet but once I do I'll see if the issue has been resolved. All work was under warranty, however the WO states this job (labor and parts) came out to $43.68 that's good news if you have no warranty.
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Old 05-03-17, 12:08 PM
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Mobius1
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Originally Posted by lexman52
Where is the sensor for the headlights to automatically turn off. They do not shut off in any position automatically
For the 01-03 it's the little black bubble/dot thing on the middle-top of the dashboard, next to the front windshield vents.

There are also ways to change at what light level's the sensor must be at the activate and de-activate the headlights/dash-illumination. Google "customize function diagnostic program card" for more info. You need to go to a Lexus/Toyota dealer (or similar) to change these settings.

Edit: I dont have an 04-06 so i cant say for certain if its the same location. I wouldn't be surprised if it is though.
Old 05-03-17, 02:23 PM
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jayclapp
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My 04 UL has the "little black bubble/dot thing" at the same place. Regarding auto turn off, the car won't turn off the lights if there is a door or trunk lid open. It assumes you are not through with the car and doesn't want to shut down and leave you in the dark for instance. It will shut down after a programed wait after the last door is shut.
Old 05-04-17, 10:43 AM
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lexman52
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Thanks OKNowWhat The door switch sounds logical will check it out
Old 05-04-17, 06:04 PM
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OkNowWhat
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Originally Posted by lexman52
Thanks OKNowWhat The door switch sounds logical will check it out
No problem! Hey when you have the problem figured out I'd appreciate if you could write up a bit on what you ended up doing. (just in case my ends up doing the same thing at some point)
Old 05-04-17, 08:14 PM
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lexman52
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Bad switch for sure. When I open the drivers door interior light does not come on. Other 3 doors do come on.Will swap out the rear door switch to the front tomorrow
Old 05-06-17, 10:22 AM
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lexman52
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UPDATE: So when I took the rubber piece of there was no 10mm bolt holding it tight took the bolt out of the rear door put it in the front and PRESTO the front interior light came on. Opened rear door and no rear light. So with out that 10mm bolt in it is not grounded. Headlights go off automatically. aLL THIS TIME TRYING TO FIGURE OUT THIS LIGHT PROBLEM ALL IT WAS WAS A BOLT. All is good.
Old 05-06-17, 11:18 AM
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OkNowWhat
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Originally Posted by lexman52
UPDATE: So when I took the rubber piece of there was no 10mm bolt holding it tight took the bolt out of the rear door put it in the front and PRESTO the front interior light came on. Opened rear door and no rear light. So with out that 10mm bolt in it is not grounded. Headlights go off automatically. aLL THIS TIME TRYING TO FIGURE OUT THIS LIGHT PROBLEM ALL IT WAS WAS A BOLT. All is good.
Awesome, nice job!
Old 05-06-17, 06:03 PM
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lexman52
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Thanks always a nice feeling to fix a problem when u feel like it could be an expensive proposition. Now I love watching them turn off. HA HA.
Old 05-08-17, 04:04 PM
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lexman52
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Also fixed another issue. Buzzer would not sound with key in the ignition when you opened the door.Stupid 10mm bolt.
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