Car alarm goes off when door opened with key?

Asked by Nov 08, 2017 at 04:10 AM about the 2007 Pontiac G6

Question type: Maintenance & Repair

My driver side door had to be replaced out of an accident, and ever since then
the car alarm goes off if i open the door with the key instead of the fob. It was
not like this before the door was replaced, so I think I've narrowed it down to the
chip in the door not matching the chip in the key. Is there any way to fix this?

6 Answers

127,435

More like the door has a bad lock/unlock switch, when the door was repalced did they transfer the stock switches to the replacement door or did they just put on another door and called it good?

1 people found this helpful.
127,435

The sensor for the key chip is inside the vehicle, not the doors.

1 people found this helpful.

I'm going to bet they just put on a new door and called it a day... Is there any way to fix it if they didn't transfer the stock switches?

127,435

First have the door switch checked, and if it is bad replace it, it's not a integral part of the door, it's just a switch.

Awesome! I will give that a try and let you know how it goes! Thanks for your help!

There is a limit switch on the drivers door lock solenoid. When the key or fob opens the door, the switch tells the computer that the door was legitimately opened and to disarm the alarm. My guess is that either the door switch assembly is bad or the wiring from the door solenoid to the computer is broken, most likely where it bends when the door is opened. If replacing the switch does not work, you will need to replace the wire harness section from the drivers side door.

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