I'll second the above as a good starting point.
Quote:
Originally Posted by
MrOnions
Can't see why there would be a problem with all 3 keys so guess it's something else....
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What sort of 'accident' did it have? Front, left side, right side etc. Was it stolen at the time it had the accident?
There are a multitude of ways the immobiliser comms can get damaged from ham-fisted thieves messing with wiring or the ignition barrel to physical crash damage to dash, ignition, wiring and ECU from going down on the deck.
The red key is a programming key and should not normally be used to run the bike. The other two are registered from that red key's code to the ECU. A 51 error code means the error/problem is between the receiver (in the ring round the ignition barrel) and the ECU which is why all the keys fail to start the bike. Check for visible physical damage between these two areas.