Electric Trunk Lock

All of the locks in the Crossfire are pneumatic. That is, they operate on air. The central locking pump puts either pressure of vacuum into the hoses going to each lock - depending on whether you wish to lock or unlock.

There is an exception to this rule: The Roadsters have a second lock on the trunk lid, this second lock is electric and is operated ONLY by the PTCM. The designers wanted to be sure no one can open the trunk lid while you are moving the top up or down - as this would mean the spoiler or trunk lid might hit the tonneau lid.

The electric lock is located in the trunk lid, bolted in place near the latch. . In the thread "Trunk Lid Jammed", you can read the saga of how this lock fouled up one of my Sunday afternoons many years ago.
The yellow box gives an approximate location:



Problems with the Electric Lock
One of the issues with this lock, is that when the PTCM tells it to "unlock", it will unlock part way, that is, the cam won't move all the way such that the truck stays locked - but the electric travel switches in the lock tell the PTCM that it DID unlock!
One way around this is to disable the lock. Now, you can't simply remove this lock, as the PTCM MUST see indication that it locked. So, what we do is we removed the trim panel from the underside of the trunklid, we then remove the two screws holding this lock in, and we remove the vanilla colored "cam" from the end of the lock mechanism. This way, the cam can move back and forth without actually locking the trunk - and yet, the PTCM thinks all is normal. This "electric trunk lock disable mod" is a highly recommended mod for your next 'tech day'.

Here is the lock mechanism with the offending "cam" circled in red. It snaps off the end of the actuator arm with ease.


Here is the mounting location of the electric trunk lock (yellow arrow) with the two mounting screws (red arrows):



Which Lock has me locked out?
So, you try to open your trunk but you can't, it is locked. How do you know which lock has you locked out? This is easy, when you try to open the trunk, the lever will either refuse to move or be "floppy". This is what tells you which lock has you locked out.

Lever is "Floppy" - It appears the lever is now disconnected from anything, like something is broken inside. But nothing is broken - the pneumatic locking system has you locked out. Try using the button on the dash or the buttons on the key fob, press "Lock" and then "Unlock" again to see if it works.

Lever is "stiff" - It appears the lever is now jammed or something. This is an indication that the electric lock has you locked out. This is when you should remember that the LAST thing the controller does at the end of a cycle is to unlock the trunk. If you let go of the button BEFORE you got a 'beep' when putting the top up OR down, the lock will probably still be locked. Try pressing the button again and see if you can get a "beep". Or, put the top up or down and make sure you wait for a beep - this may clear it.