Re: Locking/unlocking issues
Originally Posted by
JereRB
2004 Chrysler Crossfire. I know the locks are an issue with this car. I have searched, did some reading, but didn't find anything that quite matched my situation. So here we go:
Locks: will unlock, won't lock.
Key fob: lock button will not lock driver's or passenger's lock, or fuel door or trunk. If doors are locked manually, unlock button will unlock them both with 1 press. When unlock button is pressed, you can hear the vacuum pump in the back activate and unlock. When lock button is pressed, cannot hear it activate. You can see the lights flash from the outside when either button is pressed. But only unlocking/locking happens with unlock button. Can't tell if unlock will unlock the fuel door or trunk due to not manually locking them or knowing how.
Central console lock/unlock button: nonfunctional. Lock does not lock anything. Unlock unlocks nothing.
I replaced the vacuum pump in the trunk today. Previously, nothing would lock or unlock by either the key fob or central console button. Replacing the pump at least got me to unlocking. Replaced the number 9 fuse, no change. Checked the trunk area where the pump was located. It's bone dry.
So...any idea where to go from here?
You say it was bone dry but water could have been in there two years ago that has now corroded something to the point of causing strange symptoms. I recall one post where they guy had to take the plastic housing off the module before he saw the circuit board with green stuff growing on it to find the cause.
Have you disconnected the electrical connectors at the locking module? How do they look? Check all grounds near each module. In the trunk I think there are three points. The SKREEM ground can be seen on the left side of car, with interior fuse panel door removed up under the dash.
Do you know your way around a schematic and voltmeter? The link to the manuals can be found in the TSB's how to section of the forum.
Water damage is really the most common cause.
Last edited by KDW4Him; Apr 16, 2016 at 11:15 AM.