The 6HP transmission in the xDrive35i does not have support for auto start stop. Unless there's an unannounced 6 speed from ZF no one knows about. BTW, anyone every figure out if the 6HP is the 6HP19TU, 6HP19Z, 6HP21 or some other transmission? The manual calls it a 6HP19TU but online parts sites say it's a 6HP21 and 6HP19Z.
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