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Technology for comfort, convenience and safety
98
Press the BC button on the turn signal lever
repeatedly until the display appears, refer to
arrow.
The drive train and wheels are schematically
depicted.
Bar graphs show the current distribution of
drive torque. The longer an illuminated bar is,
the greater the drive torque in the related wheel.
Malfunction
If xDrive and Dynamic Performance Control are
malfunctioning, the instrument panel display
appears in gray.
HDC Hill Descent Control
The concept
HDC is a system for driving downhill in steep
terrain. This system reduces vehicle speed on
steep downhill gradients, thus allowing you to
maintain even better control of your BMW
under these conditions. The vehicle moves at
approximately walking speed without active
intervention from the driver.
HDC is available for activation at vehicle speeds
below approx. 22 mph/35 km/h. When driving
down steep hills with a speed below approx.
22 mph/35 km/h, the vehicle reduces speed
automatically down to approximately walking
speed, approx. 5 mph/8 km/h, and then main-
tains this speed at a constant.
Only use HDC in transmission positions D or R.
Increasing or reducing speed
You can use the accelerator or brakes to vary
this automatically controlled speed within a
range extending from approx. 4 mph/6 km/h to
15 mph/25 km/h.
You can specify a target speed within the same
range by using the lever of the cruise control.
With downhill grade over 10Ξ you can reduce
the speed to approx. 3mph/4km/h. Pull the
lever of the cruise control beyond the resis-
tance point, arrow 3.
1 Increasing speed
2 Pull to the resistance point:
Reduce speed to approx. 4 mph/6 km/h
3 Pull beyond the resistance point:
With downhill grade over 10Ξ, reduce
speed to approx. 3 mph/4 km/h.
Activating HDC
Press the button; the LED lights up.
The HDC display is shown in the instrument
panel.
The LED flashes when the brakes are applied
automatically.
Deactivating HDC
Press the button again. The LED and the HDC
display go out.
HDC is automatically deactivated at speeds
over approx. 37 mph/60 km/h.
Online Edition for Part no. 01 41 2 600 792 - © 09/08 BMW AG
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