Water light flashes 3 times randomly. Faulty sensor?

[ScottMk2Gti16v]

Hi guys, my water light flashes 3 times at random points on any journey. Sometimes twice in 5 mins. Sometimes once an hour. I've read a few old posts and it seems it might just be a faulty sensor in the expansion tank? That sound about right?  It's just I've not seen mentioned anywhere on this site about 3 flashes specifically.

Cheers

[kittie]

Mine started doing this the other day - the dials go a bit funky too (revs etc). When I posted about it it was suggested it was a bad earth for the clocks (still not actually looked though!)

Might be worth checking just in case 

[takethefifth]

Have you topped up the water in the expansion tank? When this is low it will cause the light to come on, i am just thinking maybe round corners as the water moves its setting it off.