I've got a Jetta III that the check engine light comes on after starting. After searching and reading a few threads, I found the "shorting" plug under the rear seat. I've tried reading the codes, but it appears I don't have the correct procedure.
Could someone tell me the procedure how to read the codes and how to clear them? Also, how many codes will it store? I haven't taken it to a dealer since they broke one the clips holding the distributor cap (long story).
TIA.