Originally Posted by
martysmartie
The battery is for the radio, not the immobiliser, rather the key contains a "Transponder".
Do you not have a spare key you can try, it sounds to me as the key has lost it's 'partnership'.
Also I think you will have the older generation of "PATS", in which case you need the red 'master key'.
Martin
removing the battery and bridging the terminals clears the ecu.
yes the key has a transponder, so do all the locks, there is also the immobiliser ecu and the engine ecu, they all have to 'talk' to each other.
no i only have one key.
its a 3 button remote so not the older ones like on a mk5 escort so i don't think it needs the red master.