I understand.. And feel your pain.. Working on cars is not like it was when carburetors were the thing... Bimmers are complicated creatures.. If you plan on doing your own on Bimmers.. I would highly recommend getting some diagnostic software.. And a laptop dedicated to only your Bimmer... It will make troubleshooting so much easier.. Plus you'll be able to code your own replacement parts..
It can be very frustrating.. But stick with it and you start to learn the bugs and fixes... The only one I'm really scared of on my 06 is the transmission going out.. It has started to kick a bit from 1st to 2nd shift... And needs a mechatronics unit rebuild
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