bugger! just bought the cartoday and the tems was all working and then after 45min on the way home the check tems light came on and the system wont adjust itself. its not sinking, just wont do anything. the cars got an aftermarket height adjuster and it doesnt seem to do anything either. how do I check what code is bringing this light on? surely someone must know how to extract and clear codes? I cant even jack it up safely yet to check the sensors underneath. it doesnt sound like the pump is working either and it definatly was a few hours ago!