Low fluid will affect reverse before drive, and a fluid pressure problem usually affects forward gears as well as reverse. But as this is a common problem with your car, I believe you have a problem with the mechatronic seal. In older BMWs, it gets dry & brittle, then leaks pressure so the transmission gets fluid force in both directions. You'll likely have to replace both the seal and the adapter at a cost of about $1,000.
My 2010 Panamera Porsche 4S said transmission default and will not reverse but will drive forward. Anyone knows about this?
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Maintenance & Repair
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Maintenance & Repair
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Car Selling & Trading In
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General
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