From a website ref the Jaguar X300

"Open the boot lid and drivers door, and switch on the ignition. Rock
the valet switch, in the centre console, 5 times. The system will
chirp to indicate it has entered learning mode.

On models with seat/mirror/steering wheel memory functions, the first
remote will be linked to memory 1, second to memory 2 etc.

Press the larger, lock, button of the remote. The system will chirp to
confirm it has got the signal. If it doesn't receive any signals for
15 seconds, it will chirp twice and exit learn mode.

To programme further remotes, rock the valet switch once. The system
will chirp twice for remote number two, three times for number three
etc, then press the lock button of the remote as above.

When finish, wait 15 seconds for the system to time out and chirp
twice, turn off the ignition, close the doors and boot lid and the job
is done! "

--
Mark.
www.markvarleyphoto.co.uk
www.mvp-fine-art.co.uk
www.4x4info.info
www.shoot-to-thrill.com