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STARTING AND DRIVING
267
All Wheel Drive (AWD)
Your Volvo can be equipped with permanent All
Wheel Drive, which means that power is distrib-
uted automatically between the front and rear
wheels.
Under normal driving conditions, most of the
engine's power is directed to the front wheels.
However, if there is any tendency for the front
wheels to spin, an electronically controlled cou-
pling distributes power to the wheels that have
the best traction.
NOTE
The message AWD disabled Service
required will be appear in the information
display if an electrical fault should occur in
the AWD system. A warning light will also illu-
minate in the instrument panel. If this occurs,
have the system checked by a trained and
qualified Volvo service technician.
Related information
•
Transmission – general information (p. 257)
•
Hill Descent Control (HDC) – introduction
(p. 267)
Hill Descent Control (HDC) –
introduction
HDC is a type of automatic engine brake and
makes it possible to increase or decrease the
vehicle's speed on downhill gradients using only
the accelerator pedal, without applying the
brakes. The brake system functions automatically
to maintain a low and steady speed.
Introduction
Normally, when the accelerator pedal is released
while driving down hills, the vehicle's speed slows
as the engine runs at lower rpm (the normal
engine braking effect). However, if the downhill
gradient becomes steeper and if the vehicle is
carrying a load, speed increases despite the
engine braking effect. In this situation, the brakes
must be applied to reduce the vehicle's speed.
HDC is particularly useful when driving down
steep hills with rough surfaces, and where the
road may have slippery patches.
WARNING
HDC does not function in all situations, and is
a supplementary braking aid. The driver has
full responsibility for driving in a safe manner.
Related information
•
Hill Descent Control (HDC) – operation
(p. 268)
•
Brakes – general (p. 269)
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