Frelander 2. Manual — part 715

Hill descent control (HDC)

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If the brake pedal is depressed, HDC will be
overridden and the brakes will operate as
normal. When the brake pedal is released, HDC
will resume control of the descent.

If HDC is switched off during a descent, HDC
assistance will fade out gradually. This is to
prevent loss of control if HDC is switched off in
error. HDC will resume control when switched
back on if assistance is still required, but at the
speed the vehicle is travelling when the pedal is
released.

When driving off-road HDC can be permanently
selected, but it will only provide assistance
when the speed parameters are met.

Warning messages

Brake temperature

In extreme circumstances, the HDC system
may cause brake temperatures to exceed their
pre-set limits. If this occurs the warning
message HDC TEMPORARILY NOT
AVAILABLE SYSTEM COOLING will be
displayed in the message centre. HDC will then
fade out and become temporarily inactive.

If the vehicle is not fitted with a message
centre, then the amber HDC warning indicator
will flash.

HDC will remain unavailable until the brakes
reach an acceptable temperature. Once the
brakes have reached an acceptable
temperature, the message will disappear (or
the warning indicator will extinguish) and HDC
will, if required, resume operation.

System fault

If a fault is detected in the HDC system, HDC
FAULT SYSTEM NOT AVAILABLE will appear in
the message centre.

If the vehicle is not fitted with a message centre
the amber HDC warning indicator will
illuminate.

If the fault is detected whilst the system is
operating HDC assistance will fade out.

If a fault is detected, contact you Land Rover
Dealer/Authorised Repairer as soon as
possible.

WARNING

Do not attempt a steep descent if HDC
is inoperative, or warning messages are

displayed.

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Traction control

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Traction control

USING TRACTION CONTROL

Electronic Traction Control (ETC)

ETC operates in conjunction with Dynamic
Stability Control (DSC) and is designed to
assist when one, or more, wheels have lost
traction.

If a wheel looses traction, ETC will operate the
brake on that wheel until it regains traction.

Warning indicator

If a fault is detected within the ETC
system the warning indicator will
illuminate.

Before driving off-road

Before venturing off-road it is absolutely
essential that inexperienced drivers become
fully familiar with the vehicle's controls. In
particular, CommandShift, Hill Descent Control
(HDC), and the Terrain Response system.

Basic information and off-road driving
techniques can be found in the off-road driving
handbook available on-line at
http://www.ownerinfo.landrover.com

Off-road driver training should be undertaken
by anyone intending to drive off-road. Training
is available at your nearest Land Rover
Experience centre. More details can be found at
http://www.landroverexperience.com

Stability control

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Stability control

PRINCIPLE OF OPERATION

Dynamic Stability Control (DSC)

DSC has two main functions.

Firstly, if a wheel, or wheels, loose traction
when accelerating, it enhances Traction
Control by reducing engine torque, and
applying braking force to individual wheels.
This further improves the vehicle's ability to
pull away on slippery, or loose surfaces, and
reduces the likelihood of wheel spin when
cornering.

Secondly, DSC will apply braking force to
individual wheels in order to maintain vehicle
stability when cornering, changing lanes
suddenly, or manoeuvring in an emergency.
This will help to keep the vehicle on the driver's
intended path, rather than over, or under
steering.

1. Vehicle fitted with DSC.

2. Vehicle without DSC.

Roll stability control (RSC)

RSC works in conjunction with DSC to try and
prevent vehicle roll-over. If the system senses
that the vehicle is approaching roll-over it will
reduce engine power and use the ABS system
to reduce the chance of roll-over.

WARNING

DSC is unable to compensate for driver
errors.

It is the driver's responsibility to drive with due
care and attention, in a manner which is safe
for their vehicle, it's occupants, and other road
users.

WARNING

No electronic system can remove the
need for safe driving practice. RSC can
help to maintain control of the vehicle.

It cannot regain control of the vehicle if it has
been lost, or overcome driver errors. Always
drive with due consideration for the prevailing
road and weather conditions.

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2

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Stability control

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USING STABILITY CONTROL

DSC

DSC is activated automatically each time the
engine is started, and is automatically selected
by some of the Terrain Response Special
programs.

Note: In the majority of driving situations, and
particularly on-road, it is recommended that
you do not turn DSC off.

Deactivating DSC

In some driving conditions it may prove helpful
to deactivate DSC to improve traction. These
conditions include :-
• Rocking the vehicle out of a hollow.
• Rocking the vehicle out when the wheels

have sunk into the surface.

• Pulling away in deep snow, or a loose

surface.

• Driving along deep ruts.
• Driving through deep mud.

To deactivate DSC, press, and
briefly hold, the DSC button. The
DSC warning indicator will

illuminate continuously as a reminder that DSC
is deactivated.

Note: Deactivating DSC will have no effect
upon the operation of Traction Control.

Reactivating DSC

DSC is reactivated by :-
• pressing, and briefly holding the DSC

button.

• starting the engine.
• selecting a new Terrain Response special

program.

DSC system fault

If a fault is detected the DSC warning lamp will
illuminate continuously when DSC has not
been deactivated.

CAUTION

Driving with DSC deactivated puts
additional loads on the brakes.
Wherever possible, drive with DSC

activated.

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