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      01-11-2012, 03:47 PM   #221
davesf
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Drives: 2012 550xi DSB, black nappa
Join Date: Oct 2011
Location: San Francisco, CA

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Quote:
Originally Posted by Needsdecaf View Post
I was told by my local Shop Foreman that the issue is with the transmission not wanting to downshift 2-1, and that it is a known issue....with no known fix.

This would explain why it's much worse when rolling, rather than completely stopped. The car reacts slowly in second gear and then decides to downshift to first, and reacts very strongly.
This makes alot of sense. I don't feel unhappy with my 550xi's response from a stop, but even in my car I can feel a bit of this transmission/low-rpm related timing. If you move the shifter to the left it'll put it in 'sport' shifting mode and also show you the gear it's in on the center console.

I wonder if the efficient dynamics regenerative breaking is making the problem worse at low speeds as they might be intentionally staying in 2nd to lessen engine-drag and milk more out of the regeneration.
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2012 550xi Sport - Deep Sea Blue, black nappa, anthracite, ceramic, cold weather, ARS ...
2010 lexus 450h - cerulean blue / grey (wife's)

Past [ 2005 Audi S4 ] [ 1998 Subaru Legacy GT ]
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