Hi guys, I've been at this for the last half hour, but I can't seem to do anything.

Basically, I locked my car with the key and deadlocked it. Came back to it after half an hour and it won't open the deadlock. It usually works fine.

The remote on the key is broken. Also looked under the rear seat behind driver for the central locking unit, but its not there. Maybe because my car is a phase 3.

Any help please?
Thanks

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Just a regular xsi..

I can open just the driver door or the front passenger door by themselves with the key, but the rest of the car doesn't unlock

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Just a regular xsi..