hi all , new to this but need help please after battery disconnect yesterday i replaced a door cable on my 04 l322 rangerover , I took advice from a mechanic and disconnected the battery for 20 mins before hand , on reconnection I have now lost my central locking , and when i turn the car off ...

yesterday i replaced a door cable on my 04 l322 rangerover , I took advice from a mechanic and disconnected the battery for 20 mins before hand , on reconnection I have now lost my central locking , and when i turn the car off , and remove the key from the ignition , it tells me the "key is...