The concept
The DTC system is a version of the DSC in which forward momentum is optimized.
The system ensures maximum forward momentum on special road conditions, e.g., unplowed snowy roads, but driving stability is limited.
It is therefore necessary to drive with appropriate caution.
You may find it useful to briefly activate DTC under the following special circumstances:
▷ When driving in sand, on snowy inclines, in
slush, or on unplowed, snow-covered road
surfaces
▷ When rocking a vehicle free or starting off in
deep snow, sand, or on loose ground
▷ When driving with snow chains.
See also:
What to do if...
Information on suitable mobile phones.
Appointments, tasks, notes, text messages, or
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Controls
Buttons at a glance
1 System on/off, interrupt
2 Resume speed
3 Store speed*
4 Store, maintain/change speed
Switching on
Press the button on the steering
wheel.
The marking in the speedom ...
Safety
Both the coupe and convertible have front airbags plus side-impact airbags
built into the front seats. As required of all 2012 models sold in the U.S., the
640i has standard antilock brakes and an ...