Door locks going nuts... unlocking/locking while driving and now won't lock

[YoungFledge]

Hey all,

I tried searching but none of the other threads really came to a solution. While driving my 07 3 GT the doors are constantly unlocking/locking

Also, when I lock the door via remote, door switch, or key... it just unlocks automatically.

Any idea what part might be on the fritz? Thanks for any help.

[Noisy Crow]

Sounds like it thinks the key is in the ignition.... do you have a remote start or aftermarket alarm installed?

[YoungFledge]

Negative. The car is completely stock.

[Mazdy]

Sounds like it thinks the key is in the ignition.... do you have a remote start or aftermarket alarm installed?

+1
Yup i was about to say that....
Good question..

Other than that...take it to your dealer and have it checked asap

[YoungFledge]

Ok just got home and experimented with it. I was just sitting in the car with the keys in the ignition and the car running and the doors were locked... it was trying to lock the doors about every 3 seconds. And then when I tried to unlock the the doors using the switch on the door panel... it would immediately lock them again.

Very strange.

[Noisy Crow]

I'd start by checking that all the connector so the PJB ("fusebox") under the glovebox are properly locked in place.

[Scottobot]

Could it be the BCM (Body Control Module)?

[Noisy Crow]

Could it be the BCM (Body Control Module)?
Also know on Mazdas as the Passenger Junction Box (PJB). :)