Can anybody shed some light on a strange issue I'm having with my 660Z

Had a pretty wild ride yesterday and the Z took a swim twice, both times the engine was cut immediately and the bike restarted no problem. Got home later in the day and washed the bike then left it to drip dry as per usual.

This afternoon I happened to walk past the bike and heard a strange sound. looked around and saw the dash lights flicking on and off and the rev needle blipping up as per normal ignition on sequence, even the telltale noise that the dash makes when turning it on is there, but it only lasts about a second and does it about 20 times or so then stops. wait a little while and it happens again. The key is not in the bike while this is happening and the ignition is in the OFF position?

Bike still starts fine when using the key and no ECU faults are shown, only funny seems to the be immobiliser. I got the 5 long and 2 short flashes on the immobiliser light, used the reset (RED) key to reset it and the light behaved normally for a short period of time,now its showing the error sequence again.

Any ideas what the problem could be, could I have gotten water in somewhere that could be causing a short and could it be from the swim or the wash after the ride?

Any help on where I should check would be appreciated. Instrument cluster (seems sealed) or under seat electrics?

I have removed the negative battery terminal for now to prevent the intermittent problem from draining the battery and in the hopes of allowing the electrics to dry although its more that 24 hours after its wash but there may be water trapped somewhere I'm unaware of.

The bike is a 2010 Model XT660Z

I'd really appreciate any help anyone can offer.