My 325i has the "service engine soon" light came on. The car works fine so I don't think it is serious. I tried disconnecting the battery but the light still came on.
I got layed off my job so I can't afford to take it to a dealer or mechanic.
Is there a way to reset it? Or is there an instrument I can buy that I can use to diagnose the problem? I am very technical so I am not afraid of using instruments.
Thanks for all advice.