I just did my weekly big shop and got back to the car to find that when i started the engine the abs and esp lights remain on. I have tried since then restarting the engine to see if it cures it and once the esp light stayed off but the abs light stayed on. Now they are both on all the time. i have tried and the esp no loger stops excessive wheel spin and the abs does not work. Is there anything I can do before i take it to my dealer??