Jeep WRANGLER 2020 Owner's Manual page 157

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 over-
heated brakes. The flashing will stop and
HDC will activate again once the brakes have
cooled sufficiently.
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.
Hill Start Assist (HSA)
The Hill Start Assist (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.
The following conditions must be met in order
for HSA to activate:
The feature must be enabled.

The vehicle must be stopped.

Park brake must be off.

Driver door must be closed. (If the doors are

attached, then the door must be closed. If the
doors are detached then the driver's seatbelt
must be buckled).
The vehicle must be on a sufficient grade.

The gear selection must match vehicle uphill

direction (i.e., vehicle facing uphill is in
forward gear; vehicle backing uphill is in
REVERSE (R) gear).
HSA will work in REVERSE gear and all

forward gears. The system will not activate if
the transmission is in PARK (P) or NEUTRAL
(N). For vehicles equipped with a manual
transmission, if the clutch is pressed, HSA
will remain active.
WARNING!
There may be situations where the Hill Start
Assist (HSA) will not activate and slight rolling
may occur, such as on minor hills or with a
loaded vehicle, or while pulling a trailer. HSA is
not a substitute for active driving involvement.
It is always the driver's responsibility to be
attentive to distance to other vehicles, people,
and objects, and most importantly brake
operation to ensure safe operation of the
vehicle under all road conditions. Your
complete attention is always required while
driving to maintain safe control of your vehicle.
Failure to follow these warnings can result in a
collision or serious personal injury.
SAFETY 155
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