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Visit to dealership with JB4 on car
Went to dealer for brake wear sensor issues. I left the jb4 installed and set it to map 0 (bypass) dealer ran diagnosis on car, brake sensor was the only problem found. Told SA car idles rough sometimes when cold asked if diagnostic said anything about that. He went to the back came out a few moments later and said nothing came up but the wear sensors.
Do Not buy the break wear sensors for 135 from bimmerworld! They fit properly but the cars brain would not recognize the part as being installed.
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