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550 Automatic Transmission

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Old 01-04-2006, 03:58 AM
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My Ride: On Order for European Delivery 550i SilverGrey Sports, Winter, Prem Pkg, Prem sound, NAV, HUD, comfort seats
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I have my 550 (w/ Automatic transmission) now for about 2 weeks.

What I find is that as I'm driving down a local route at about 30-35mph adding a little pressure to the peddle makes the car shift up and then with a slightly decreasing pressure, the car shifts down. The shifts are a little more jerky than I would have expected. I would have expected very smooth shifting.

Anyone else notice this. Not sure what software I have but I assume it relatively up to date given November European delivery.


Any helpful suggestions?

Thanks
Old 01-04-2006, 05:42 AM
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Originally Posted by Cyclist' post='218994' date='Jan 4 2006, 06:58 AM
Any helpful suggestions?
Yes, stop driving like your Grandmother. jk

Yes, in D mode around 30 mph sometimes the gears can't seem to find a happy place. But the shifts are smooth, not jerky, and I have to pay close attention to even notice it. Otherwise, I tend to drive around more in DS mode, which seems to hold a gear through a wider range of RPMs. Better still, row it yourself in M mode.
Old 01-04-2006, 05:49 AM
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Originally Posted by tachyon' post='219014
Any helpful suggestions?
Yes, stop driving like your Grandmother. jk

Yes, in D mode around 30 mph sometimes the gears can't seem to find a happy place. But the shifts are smooth, not jerky, and I have to pay close attention to even notice it. Otherwise, I tend to drive around more in DS mode, which seems to hold a gear through a wider range of RPMs. Better still, row it yourself in M mode.
[/quote]


Gee thank!

There are places where you have to drive sanely.

I have been trying ds and m mode more.

I still am surprised that the hifts in auto arent all that smooth
Old 01-04-2006, 07:15 AM
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Even with frequent gear changes, the shifts should be smooth. You may want to have this checked out.

Also, the tranny does "learn" your driving habits. I don't know the cycle time of learning, but your ever-shifting tranny may settle down a bit as it learns more.
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