Hi, yesterday i took my car in to get timing belt, water pump and aux belt done. I also had to change the belt tensioner. I got the car back today, the engine management and air bag lights are on... when the mechanic put it on the computer it said the coolant temp sensor was faulty which he erased (come back on 5 miles later) and im sure it said something about knocking sensor. The airbag on the drivers side said something about voltage and that wouldnt erase at the time. The mechanic told me to drive it about and see if that helps. The other thing i have noticed is the pixels on the stereo have gone funny. Has anyone got any idea what has happened and where i can go with it? obviously i will be taking it back but i would like to go back a bit more prepared. Thanks, Lee.