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

alarm keeps shutting down my engine!

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Old 03-31-12, 08:42 PM
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ShalinCon
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Angry alarm keeps shutting down my engine!

I just bought a 1990 Lexus LS400 and was given only one key, no remote. My problem is that several times I have activated the alarm and then shut down the engine. I have had to call a mechanic twice to come out and override the alarm and both times he has told me I will have no further problems. Now he won't answer my calls and my car is once again not running. How can I disable the alarm permanently and get my car running again?
Old 03-31-12, 09:21 PM
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PureDrifter
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sounds like it's got an aftermarket alarm, the factory alarm doesnt usually go crazy like that.

because it's an electrical issue i'll say go take a look at the trunk hinge harness, and then take it to a shop and have the aftermarket alarm removed (if there is one).

harness fix (ignore the symptoms, it causes ridiculous electrical issues on the 1LS) http://www.lexls.com/tutorials/lighting/bulbout.html
Old 04-01-12, 12:39 AM
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RA40
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Welcome to Club Lexus.

Agreed with PD, the wiring on the trunk lid harness causes plenty of electrical issues.
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