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Old 09-30-2009, 10:24 AM
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WilliCO WilliCO is offline
1oz perception-1# obscure
Location: Castle Pines, Colorado
Join Date: Oct 2007
Posts: 3,133
Mein Auto: 2013 535i XDrive M-Sport
Originally Posted by Hogie View Post
What are the RPMs that you are at when this happens?
For me, about 1500-1750 RPM, usually with very light throttle, moving at about 40 MPH.

Originally Posted by Hogie View Post
I am just wondering at that speed in auto mode ( assuming a Steptronic) if the car is searching for the next gear or previous gear, might be right on a threshold.
I had this thought as well, and I specifically suspected that the transmission was indecisive about the 5 to 6 shift. I have since noticed that the problem _does_ occur in DS mode, where the transmission holds 5th gear, so that theory has lost steam in my mind.

I think the problem may be with the throttle, and not the transmission. There is no discernable tachometer movement when it happens - it really just feels as if I lighten my foot on the pedal very slightly and then resume.
2013 535i xDrive M-Sport | 2005 545i Sport (Retired and Missed) | 2001 X5 3.0 Sport (Retired)

Last edited by WilliCO; 10-01-2009 at 09:15 AM.
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