hi all. for some reason my ABS light sometimes come on when im not even braking . it happens a few times a month and has been doing it since ive had the car. the car has done 98k and looking at the old mots it failed on one due to the abs light being on so i take it its been the same problem since then. it hasnt affected the brakes at all. sometimes if i leave the car over nite the light wont come back on in the morning. could this just be down to a faulty abs sensor?