its the wear sensors for sure, i had the same problme a couple of months ago. Whip the front wheels off and take a look at the pads. You will see a curly wire coming out of the back of the pads that plug into the brake calliper. This is the send wire for the indicator on the dash. When you go and buy some new pads, take them out of the box and you will see the wire attached to the pad. Simply install the pad, and plug the wire into the calliper and hey presto....problem sorted.

cheers