Hill descent control (HDC)
138
L
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.