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  #1  
Old 12-29-2008, 11:26 PM
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hesitation at low RPMs

At low RPMs ( 1000- 1200), upon accelerating, it hesitates, then, downshifts and takes off. The dealership do not seem to be able to fix the problem even after ugrading a certain software
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  #2  
Old 12-29-2008, 11:39 PM
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mine will occasionally do that also. but i believe mine only does it under load such as rolling uphill starts. my guess is the DSC is thinking about traction issues. i've got nearly 20k miles on mine. i notice this issue less these days or it is occurring less often.
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Old 12-30-2008, 12:33 AM
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drive-by-wire normalcy? OP, which engine do you have?

I complained about this also (coming from a '95 vehicle that is not drive-by-wire and just goes)....I bought it anyway thinking it was a break-in thing. A precise pressure on the accelerator helps - if you mash it, it will delay... not enough and well.. you know. I think it has learned my style by now at 4k miles... or vice versa as some would suggest. Another possibility - if you put it on manual, you'll notice it starts in 2nd gear. Wonder if auto goes through the same - sure feels the same.
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Old 12-30-2008, 02:42 AM
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Try to see if it happens in the "DS" mode. I think it's the xdrive software trying to calculate wheel traction before applying torque to the wheels.

When I put my foot down on the accelerator really quickly, then sometimes it will get jumpy and twitchy so that did surprise me a couple times.
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Old 12-30-2008, 08:03 PM
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I get this turning into a corner which is then up an inclinel... for example I slow down using brakes , turn , then accelerate up the hill and get the hesitation... this is in D mode.. btw this is on a 2007 X5 diesel...
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Old 01-01-2009, 12:26 PM
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I tried it in DS mode but still did the same. I took it to the dealership a couple of days ago and I was told that the car is running the way it should. They could not find any software problem. I wonder if it is a patially clogged injection port. I never had the problem when I first bought it.
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Old 01-01-2009, 01:12 PM
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I have a similar issue with my 08 when making low speed/rpm turns. I haven't figured out the cause, but assumed it was due to the AWD or some other electronic traction control system.
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Old 01-02-2009, 05:08 AM
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My 06,07 and 08 all did the same.

Don't know if MB and Lexus do the same.
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Old 01-12-2009, 10:31 PM
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I don't think the Lexus or the MB do that. I am not sure why not all the X5 do that. There must be some kind of factory defect...
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