Quote:
Originally Posted by srmmmm
I have also "sensed" a change in transmission behavior when towing as well. I know the vehicle is aware of the trailer because of the wiring harness load, so I am thinking sport mode or some degree of it, is automatically engaged when I've got the trailer out back. Any thoughts?
2002 X5 3.0 252,000 miles
2004 325i 113,000 miles
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Connecting a trailer has never been reported as a modifier of the transmission shifting program, so no, I don't think it changes to a tow mode.
What the transmission does do is consider vehicle speed, throttle position, and so on when selecting a gear, so it is entirely to be expected that adding drag (eg a trailer) and thus requiring more throttle at a given speed will change shifting characteristics.
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2007 X3 3.0si, 6 MT, Premium, White
Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue
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