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280 SAFETY
4th = 2.5 mph (4 km/h)
5th = 3.1 mph (5 km/h)
6th = 3.7 mph (6 km/h)
7th = 4.3 mph (7 km/h)
8th = 5.0 mph (8 km/h)
9th = 5.6 mph (9 km/h) – If Equipped
NOTE:
During HDC the +/- shifter input is used for HDC
target speed selection, but will not affect the gear
chosen by the transmission. When actively
controlling HDC the transmission will shift appro-
priately for the driver-selected set speed and corre-
sponding driving conditions.
Driver Override
The driver may override HDC activation 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 throttle or
brake application.
Vehicle speed exceeds 20 mph (32 km/h) but
remains below 40 mph (64 km/h).
Vehicle is on a downhill grade of insufficient
magnitude, is on level ground, or is on an uphill
grade.
Vehicle is shifted to PARK.
Disabling HDC
HDC will be deactivated and disabled if any of the
following conditions occur:
The driver pushes the HDC switch.
The driveline is shifted out of 4WD Low.
The parking brake is applied.
The driver door opens. (Driver door opens if
doors are attached or driver seat belt is
unbuckled if doors are detached.)
The vehicle is driven greater than 20 mph
(32 km/h) for greater than 70 seconds.
The vehicle is driven greater than 40 mph
(64 km/h) (HDC exits immediately).
HDC detects excessive brake temperature.
Feedback To The Driver
The instrument cluster has an HDC icon and the
HDC switch has an indicator light, which offers
feedback to the driver about the state HDC is in.
The cluster icon and switch indicator light will
illuminate and remain on solid when HDC is
enabled or activated. This is the normal oper-
ating condition for HDC.
The cluster icon and switch indicator light will
flash for several seconds then extinguish when
the driver pushes the HDC switch but enable
conditions are not met.
The cluster icon and switch indicator light will
flash for several seconds then extinguish when
HDC disables due to excess speed.
The cluster icon and switch indicator light will
flash when HDC deactivates due to overheated
brakes. The flashing will stop and HDC will acti-
vate again once the brakes have cooled suffi-
ciently.
Hill Start Assist (HSA)
The HSA system is designed to mitigate roll back
from a complete stop while on an incline. If the
driver releases the brake while stopped on an
incline, HSA will continue to hold the brake
pressure for a short period. If the driver does not
apply the throttle before this time expires, the
system will release brake pressure and the vehicle
will roll down the hill as normal.
WARNING!
HDC is only intended to assist the driver in
controlling vehicle speed when descending hills.
The driver must remain attentive to the driving
conditions and is responsible for maintaining a
safe vehicle speed.
22_JL_OM_EN_USC_t.book Page 280
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