Performance control, Xdrive, Hdc hill descent control – BMW X3 xDrive35i 2011 User Manual
Page 87
The system ensures maximum forward momen‐
tum on special road conditions, e.g., unplowed
snowy roads, but driving stability is limited.
It is therefore necessary to drive with appropri‐
ate caution.
You may find it useful to briefly activate DTC un‐
der the following special circumstances:
▷
When driving in slush or on uncleared,
snow-covered roads.
▷
When rocking the vehicle or driving off in
deep snow or on loose surfaces.
▷
When driving with snow chains.
Deactivating/activating DTC Dynamic
Traction Control
Activating the Dynamic Traction Control DTC
provides maximum traction on loose ground.
Driving stability is limited during acceleration
and when driving in bends.
Activating DTC
Press the button.
TRACTION is displayed in the instru‐
ment cluster and the indicator lamp for DSC
lights up.
Deactivating DTC
Press the button again.
TRACTION and the DSC indicator lamp
go out.
Performance Control*
Performance Control enhances the agility of
your vehicle.
To enhance performance during sporty driving,
the rear wheel on the inside of the curve is
braked while the resulting braking effect is
largely compensated by engine intervention.
xDrive
xDrive is the all-wheel-drive system of your ve‐
hicle. Concerted action by the xDrive and DSC
further optimize traction and driving dynamics.
The xDrive all-wheel-drive system variably dis‐
tributes the drive forces to the front and rear
axles as demanded by the driving situation and
road surface.
HDC Hill Descent Control
The concept
HDC is a downhill driving assistant that auto‐
matically controls vehicle speed on steep down‐
hill gradients. Without requiring brake applica‐
tion, the vehicle moves at slightly more than
twice walking speed.
You can activate the Hill Descent Control at
speeds below approx. 22 mph/35 km/h. When
driving downhill, the vehicle reduces its speed
to approx. twice walking speed and then keeps
its speed constant.
While you are actively braking, the system is on
standby. The system does not brake the vehicle
during this time.
Use HDC in low gears or in transmission position
D or R only.
Changing the speed
The speed can be changed in the range from
roughly twice walking speed to approx. 15 mph/
25 km/h by lightly pressing the accelerator.
To set the speed: buttons* on the
steering wheel
The desired speed can be specified in the range
from roughly twice walking speed to approx.
15 mph/25 km/h using the rocker switch of the
cruise control on the steering wheel.
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