I have a Jaguar XJ6 (1990) and the central locking system has gone berzerk.I can't even open the boot now by key or remote.When i lock the car via the remote fob key,at least one door remains unlocked and sometimes the front doors remain unlocked and sometimes the rear....they change of their own accord...Any ideas ?

SOURCE: REAR DOOR LOCK

you either have a faulty central locking motor or the wiring harness may be damaged.
Remove the door panel and check if you have a live feed to the central locking motor when you use the fob to lock or unlock. If you have power, then it will most likely be the motor that is at fault.

SOURCE: s type jaguar 1999

Unfortunately it needs to be done by your local dealer

SOURCE: i have a grand voyager

dont go through all the hassles of removing the door trim just take the terminal off the battery for about a minute then reconect again worked on mine good luck

SOURCE: Hi. I am looking for a free service / workshop

there are complete CD's on ebay with everything you need for less than $15.00......

SOURCE: Chevy Impala Door lock issue

Which is it, 98 Eclipse, or 06 Impala? Either way, your door lock actuator is stuck in the locked position either electrically or mechaically. The way to check this is to remove the door panel and unplug the actuator. If door lock can now be moved then you have an electrical problem (faulty door lock switch or faulty door lock module). If you still cannot unlock door then actuator is mechanically bad and must be replace (usually the case)