Alarm

Asked by rosanna Dec 23, 2017 at 02:29 PM about the 2003 Lexus ES 300 FWD

Question type: Maintenance & Repair

My alarm keeps going of on my Lexus es 300 how do I turn
it off and where is the fuse for it?

3 Answers
30,465

Tom answered 6 years ago

No fuse ... it's an integral part of the ECU circuitry .. you can disconnect the horn if you reconnect it before you drive the car

2 people found this helpful.
Mark helpful

Van answered about a year ago

Maybe do the same as I did: 2006 Ford Escape XLT. YES you can turn the alarm off ! The fix cost me $60 because I bought the more expensive OBD2 adapter. The cheaper one for $35 might also work but I bought the OBDLINK EX for $60. Plug in the adapter with Forscan. Go into the gem module, there are two options for alarm. Enable / Disable. I selected disabled. Now I have no alarm going off in the middle of the night. https://forscan.org/download.html Prior to my fix I check all my doors, rear window and hatch for door ajar light. My method, start car / roll down drivers window / get out of car and close door. Now open each door one at a time checking for door ajar light by looking at the instrument panel through driver’s door window. I then use a small piece of wire to jump the hood switch. Despite all door switches working the alarm would still go off in the middle of the night. Very frustrating. Oh yes i did install a new battery in my fob.

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