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lexpert, Lexus Master tech
Category: Lexus
Satisfied Customers: 2100
Experience:  Master Certified with lexus, 8 years experience with Lexus
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I have a 2006 Lexus GS300. The factory alarm goes off almost

Customer Question

I have a 2006 Lexus GS300. The factory alarm goes off almost every time I open or close the doors. It doesn't happen every time, and it can be any door. I have read that it could be a lose ground wire somewhere. Your thoughts?
JA: Have you tried locking and unlocking the driver's side door using the key itself?
Customer: No.
JA: Are you fixing your GS300 yourself? What have you tried so far?
Customer: I am trying to save money. All I have done is internet research.
JA: Anything else you want the mechanic to know before I connect you?
Customer: Is there anyway to completely disable the alarm system?
Submitted: 6 months ago.
Category: Lexus
Expert:  Chris (aka - Moose) replied 6 months ago.

Welcome, I'm Chris (aka Moose), my normal schedule online is around lunch and after dinner till early morning.

Does this occur with the key fob?

Does this occur when opening a non locked door?

Does this occur when unlocking the door with the key?

Customer: replied 6 months ago.
I have never attempted to use the little hidden key inside the key fob. This occurs almost anytime that I open or close any unlocked door.
Expert:  Chris (aka - Moose) replied 6 months ago.

If you press unlock on the fob prior to opening the door will this prevent the alarm from going off?

Will the alarm go off when closing just the driver door or when closing any other door?

Customer: replied 6 months ago.
No. When I unlock the doors with the fob and open any door sometimes the alarm goes off. And with any door open ( doors unlocked ) and close that door the alarm will go off. Of course this doesn't happen every time, but it does seem to be happening more often than it did 6 months ago.
Expert:  Chris (aka - Moose) replied 6 months ago.

I know why door open is setting the alarm off, I can not figure out why door close is doing the same. Opting out now so another can help.


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