Question about 2007 BMW 525xi Sedan
The EH gearbox switch serves to communicate with the TCM (Trans Control Mod). In A mode, it tells the TCM to operate in the most economical shifting program. M mode is for manual shift. If you have a * instead of a M, it stands for winter mode. This mode causes the vehicle to start off in 2nd so that torque is reduced thus reducing wheel spin on slick surfaces. Of course, by shifting into 4 or 3 puts you into sport mode for a more spirited shift pattern.
Posted on Dec 11, 2009
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Posted on Jan 02, 2017
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