the speed governor maybe hanging up in your case, A little try can be adding a bottle of lubegard red and driving around. My W124 developed this one morning for about 10 minutes and corrected itself, I changed the ATF 2 days later.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)