Land Rover Discovery: Hill descent control (HDC)
Land Rover Discovery (2009–2016) Owner's Manual / Hill descent control (HDC)
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HDC Controls
Hill Descent Control (HDC) is designed to
restrict the vehicle's speed to a set limit
when travelling downhill
Do not attempt a steep descent
if HDC is inoperative or warning
messages are displayed.
Gradient release control (GRC)
With Hill Descent Control (HDC) activated,
if the vehicle is stopped on a slope using
the brake pedal, GRC will become active
(except in the Terrain response system's
Sand program). During a hill asce
Wade sensing
WADE SENSING CONTROLS
Wade sensing should not be used
during off-road driving as rapid
increases in water depth cannot
be detected in time to deliver a
warning message to the driver.
When enter
SEE MORE:
Engine Control Module (ECM)
Adaptions
OPERATION
The ECM has the ability to adapt the input values it uses to control certain
outputs. This capability maintains engine refinement and ensures the engine
emissions remain within the legislated limits.
The components which have adaptions associated with them are:
Accelerator Pedal Positio
Engine System - General
Information Leakage
Test Using
Smoke Test
Equipment (G1445299)
/ General Procedures
CAUTION:
The compressed air line supply pressure must be between 3.5 and 12
bar (50 and 175 psi) for the smoke test equipment to function
correctly. Do not exceed this pressure. Failure to follow this
instruction may result in damage to the smoke test equipment.
NOTES:
The vehicle battery must be
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