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Old 09-15-2011, 06:41 AM
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Can't drive my 2008 4.8i smoothly

I find my 4.8i (2008) very difficult to drive smoothly. There are two problems:

1) However smoothly I press the gas pedal the car lurches forward unevenly. The only take-off that is reasonably smooth is if I floor the gas pedal which is fun but inappropriate most of the time.

2) When slowing to a halt using the brakes, the car slows down smoothly until it is almost stationary then there is a significant lurch as something in the transmission engages or disengages. It's as if there is a really heavy weight somewhere in the car that is moving forward and hits a bulkward or something.

I'd like to know whether these are normal for this model and whether anything can be done to eliminate these problems.
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Old 09-15-2011, 07:43 AM
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Apologies to the forum - I have now seen the many discussions on this topic, which answer the questions I have posted about smooth driving. The only thing I would still like to know is what is the most recent (and best?) software version for the transmission on this model and how can I determine whether I have it or not?
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Old 09-15-2011, 08:10 AM
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the lurching issue was somewhat fixed a while back, so if you still experience it, it was probably never addressed - just tell the dealer about it. The update should update everything else too, so why not just go.
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Old 09-15-2011, 08:40 AM
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Just dropped off my 07 4.8i for a new tranny.

I went about having a tech demo with me for the issue, we did the full reprogram and no dice. BMW corp IDd it as a fluid tank issue in the tranny and it was replaced.

If your car shifts hard and jumps when braking to a smooth stop when cold and somewhat does not present the issue when warm then you may have this issue. Anyone who wants more info please let me know, thanks!
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Old 09-15-2011, 09:26 AM
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Took mine in this week for that same issue. Seems to be fixed. Prior to the fix I would put it in Sport and it seemed to help for whatever reasons.
Good Luck!
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Old 09-16-2011, 11:10 PM
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its impossible to drive this SUV as smoothly as a other cars it seems. i dont know about the new transmission (7 gear) but the old one is jerky.

the brakes have a tough time stopping without jerky rocking the car back and forth either.

but i still love the damn thing.
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