Follow this procedure for the reset (reboot).
Have the drivers window fully open.
Open the bonnet and make sure all equipment is switched off including
interior light.
Close all doors and remove key from the ignition.
Wait 3 minutes, disconnect the vehicle battery then wait 15 seconds.
Reconnect the vehicle battery and wait a further 10 seconds.
Switch on the side lights through the driver’s window.
Switch on the ignition DO NOT start the engine at this point.
Hold the lock button on the key down for 10 seconds while key is still
in the ignition.
Switch off ignition and remove key open & close door to test central
locking system.
Start the engine.