Hill descent control (HDC)
Descent speed will only increase on a slope
steep enough to provide additional
momentum. Therefore, use of the + switch on
a gentle slope may not increase the speed.
ASCENDING STEEP SLOPES
When ascending steep slopes with HDC
selected, the vehicle will allow full control to
the driver in the normal manner. If HDC is
switched off, the maximum vehicle speed will
be limited to allow more accurate control of the
ascent.
When using HDC in manual transmission
vehicles, depressing the clutch pedal will
prevent HDC from controlling the speed of
descent.
WARNING MESSAGES
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.
Do not attempt a steep descent if HDC
is inoperative or warning messages
are displayed.
If HDC is switched off during a descent via the
brake pedal, 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 brake pedal is released.
BRAKE TEMPERATURE
In extreme circumstances, the HDC system
may cause brake temperatures to exceed their
pre-set limits. If this occurs the warning HDC
TEMPORARILY UNAVAILABLE will be
displayed in the message centre. HDC will then
fade out and become temporarily inactive.
GRADIENT RELEASE CONTROL
(GRC)
Once the brakes have reached an acceptable
temperature, the message will disappear (or
the warning lamp will extinguish) and HDC will,
if required, resume operation.
With HDC activated, if the vehicle is stopped on
a slope using the foot brake, GRC will become
active (except in Terrain response Sand
program). During a hill ascent when the foot
brake is released GRC will automatically delay
and graduate the brake release, to allow the
vehicle to move smoothly away. When
descending a hill, a similar brake hold and
gradual release is employed to provide a
smooth transition into HDC control.
SYSTEM FAULT
If a fault is detected in the HDC system, HDC
FAULT SYSTEM NOT AVAILABLE will appear in
the message centre.
If the fault is detected whilst the system is
operating, HDC assistance will fade out.
If a fault is detected, contact your Land Rover
Dealer/Authorised Repairer as soon as
possible.
GRC operates in forward and reverse gears and
requires no driver intervention.
103
| Categories | Land Rover, Land Rover Discovery 4 |
|---|---|
| Tags | Land Rover |
| Model Year | 2012 |
| Download File |
|
| Language | Bulgarian, English |
| Product Name | Discovery 4 Handbook |
| Product Brand | Land Rover |
| Applicable to Country | Bulgaria, International |
| Document File Type | |
| Publisher | landrover.com |
| Wikipedia's Page | http://en.wikipedia.org/wiki/Land_Rover |
| Copyright | Attribution Non-commercial |
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