218 SAFETY
NOTE:
A warning light will illuminate within the
instrument cluster to inform the driver that
the ESS feature has been activated.
When towing a trailer, ESS will also activate
the rear indicator lights of the trailer.
Hill Descent Control (HDC) — If Equipped
Hill Descent Control (Trailhawk)
Hill Descent Control (HDC) is intended for low
speed off-road driving while in 4WD Low. HDC
maintains vehicle speed while descending hills
during various driving situations. HDC controls
vehicle speed by actively controlling the brakes.
HDC has three states:
1. Off (feature is not enabled and will not
activate).
2. Enabled (feature is enabled and ready but
activation conditions are not met, or driver
is actively overriding with brake or throttle
application).
3. Active (feature is enabled and actively
controlling vehicle speed).
Enabling HDC
HDC is enabled by pushing the HDC switch, but
the following conditions must also be met to
enable HDC:
The driveline is in 4WD Low.
The vehicle speed is below 20 mph (32 km/h).
The Electric Park Brake (EPB) is released.
The driver’s door is closed.
Activating HDC
Once HDC is enabled, it will activate
automatically if driven down a grade of
sufficient magnitude (greater than
approximately 8%). The set speed for HDC is
selectable by the driver and can be adjusted
within the thresholds by using throttle or brake
application.
Driver Override:
The driver may override HDC activation speed
with throttle or brake application at any time.
Deactivating HDC
HDC will be deactivated but remain available if
any of the following conditions occur:
Driver overrides HDC set speed with a speed
exceeding 20 mph (32 km/h) but remains
below 25 mph (40 km/h).
Vehicle is on a downhill grade of insufficient
magnitude (less than approximately 8%), is
on level ground, or is on an uphill grade.
Vehicle is shifted to PARK.
21_MP_OM_EN_USC_t.book Page 218
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