
Originally Posted by
bacicat
The key fob battery won't stop the key from working in the lock, only the remote operation of the doors. The transponder is passive and is read by the barrel. Once that is done, the car unlocks the steering and allows the key to turn. I have heard of the locking system jamming up - there are cables running between the key barrel, the shifter and the steering column. Can you here anything clicking when you put the key in?
It may be that it is trying to disengage everything, but sees it hasn't successfully done so, so throws a fault. There are threads about this on Full Fat RR, but haven't been over there for a while, so you might have to go hunting for them. Apparently it's not a hard fix, just some parts of the dash off and a squirt of lube. Maybe worth a try.
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