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Download ISTAD and buy a cable to connect your laptop to car.
It’s BMW specific software used by BMW techs and has the TIS baked into it. Handheld scanners just don’t cut it….
Dig into the software errors to get the probable cause diagnose… and then follow the diagnosis/repair procedures.
Read all the diagnosis possibilities and then decide on which one to start on first.
Also clear codes with the software and drive again to see what replicates before doing any sort of repair.
Google ISTAD to get info on the software and YouTube tutorials.
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Sent from my smart phone...
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