Washed the bike Sunday an gave it good squirt of ACF50, went out yesterday morning and the immobiliser light was constantly on. Rode to work and it stayed on after switching off. At lunchtime I thought I'd try disconecting the battery to see if that would reset it, when I went out the light was flashing normally so I left it. When I went to ride home the light was on but pulsating. Whilst I rode home the light was flickering on and off and varying in brightness finally going off and staying off about a mile from home. When I turned the bike off the light started pulsating again. I disconected and reconected the battery but the light again acted erratically. I fired the bike up and the light came on for a couple of seconds flickered, and then went off. When I left the bike it was flashing away normally. I don't know if I'm getting any error codes as the light has has stayed on when the ignition is turned on and the bike runs perfetcly ok if the light is on or off. If the light is on this morning I will try using the red key. I can't see how it can be a key issue as the fault is occuring when the key is not near the sensor.

The bike's an 09 XTZ any ideas before I start bothering the dealer?