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The alarm is going off randomly about 1.5 hours after I

Customer Question
The alarm is going...

The alarm is going off randomly about 1.5 hours after I drive the car.

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix with a Toyota. The Toyota Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so he can help you best.

2007 Toyota Camry

Mechanic's Assistant: Are you hoping to fix this yourself?

It's at the shop right now--second time in 9 days

Mechanic's Assistant: Is there anything else important you think the Toyota Mechanic should know about your Toyota?

4-door sedan, V6 engine

Submitted: 2 years ago.Category: Toyota
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Customer reply replied 2 years ago
It's been a lot longer than the estimated 8 minutes ... I've been looking online and I see at least 3 possible solutions to this problem. Appreciate an answer soon.
Customer reply replied 2 years ago
Posted by JustAnswer at customer's request) Hello. I would like to request the following Expert Service(s) from you: Live Phone Call. Let me know if you need more information, or send me the service offer(s) so we can proceed.
Answered in 9 hours by:
2/23/2016
Toyota Mechanic: sprinkles08, ASE Certified Technician replied 2 years ago
sprinkles08
sprinkles08, ASE Certified Technician
Category: Toyota
Satisfied Customers: 23,977
Experience: ASE Master and Advanced level certified. Factory trained with 17 years dealership experience
Verified

Hello and welcome to JustAnswer!

If the alarm is going off while the car is sitting it's because activity was seen on a door, hood or trunk ajar circuit. Factory security watches the ajar switches and if it sees a switch close when the system has not been disarmed the alarm will go off.

You may have a door, the trunk or hood that isn't closing correctly. If there is a door or striker adjustment issue, damage or something foreign preventing full closure then it can cause this. I've seen strikers that were misadjusted in a way the door appeared to be closed but it was only on the primary latch.

It may be a wiring issue. It isn't common but if an ajar circuit shorts to ground then it will cause this.

The most likely cause would be a bad ajar switch.

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