How do I reset the remote locking on my Citroen Xsara

If l was you I'd drive it into a lake.

l am not an expert but most of these things are controlled by computer. If you disconnect the battery that could well do it. You will need to reset your radio probably so if it has a code number, make sure you have it before disconnecting the battery.

handbook?

Put the key in the ignition , close the door , while the ignition lights are lit up on the dash , keep pressing the lock & unlock buttons on the key fob until the doors lock themselves ,Take the key out of the ignition & the key is now re - programed .