I have an F78 on a T plate and the locks are knackered. I have a replacement set from a breaker. Around the "ignition" lock is a black plastic ring with wires attached. I assume this is the bit which "reads" the transponder in the key. Does this part "match" the key and send an "OK" signal somewhere else, or does it just read the key and send its code to the immobiliser?
I have only "grey" keys. According to the handbook I need a black key to get dealer replacements. But my local key shop has always been able to sort me out transponder keys for other vehicles. Is there something special about the Daihatsu black and grey keys?