Question about 1992 Lexus Es 300

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My 1992 Lexus ES300 had a different alarm system put in. I haven't had any issues with either alarms until recently. The factory Alarm has been going off for no reason. No vibrations or anything. the horn and lights just start to go off. I am able to run it off with my remote, but it goes off again in 5 minutes. I've had to remove the fuse for the horn at night just so it doesn't bother the neighbors, but the light still go like christmas lights. I haven't been able to find anything on the internet that really shows me hot to disable the factory alarm. Can anyone help?

Posted by DOMINIC MARIO on


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Harwoods Rd Garage

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I would find the alarm unit and either dissconnect it or replace the ni-cads.
At this age the rechargeable batteries will have failed so as it gets cold at night, the alarm thinks the voltage drop is a burglar!
So set off the alarm :

Posted on Apr 24, 2017


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Lee A.

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SOURCE: lexus alarm keeps going off unless you disconnect battery model g300 1996

I would say you have two options, You can take it to the dealer and have it disconnected, or you can go to an aftermarket car stereo/alarm store they will install an aftermarket alarm and disable your stock one at the same time, for probably about as much as the dealer would charge to just disable it. First just call the dealer to get a quote on how much that would cost, and then call the alarm place and get a quote.

Posted on Jul 30, 2008


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