Jeep Wrangler Owner's Manual page 158

Disabling And Enabling HSA
This feature can be turned on or turned off. To change the
current setting Ú page 128.
Towing With HSA
HSA will also provide assistance to mitigate roll back while
towing a trailer.
WARNING!
 If you use a trailer brake controller with your trailer,
the trailer brakes may be activated and deactivated
with the brake switch. If so, there may not be enough
brake pressure to hold both the vehicle and the
trailer on a hill when the brake pedal is released. In
order to avoid rolling down an incline while resuming
acceleration, manually activate the trailer brake or
apply more vehicle brake pressure prior to releasing
the brake pedal.
 HSA is not a parking brake. Always apply the parking
brake fully when exiting your vehicle. Also, be certain
to place the transmission in PARK (P).
 Failure to follow these warnings can result in a colli-
sion or serious personal injury.
Rain Brake Support (RBS)
RBS may improve braking performance in wet conditions.
It will periodically apply a small amount of brake pressure
to remove any water buildup on the front brake rotors. It
functions when the windshield wipers are in LO or HI
speed. When RBS is active, there is no notification to the
driver and no driver interaction is required.
Ready Alert Braking (RAB)
RAB may reduce the time required to reach full braking
during emergency braking situations. It anticipates when
an emergency braking situation may occur by monitoring
how fast the throttle is released by the driver. The
Electronic Brake Controller (EBC) will prepare the brake
system for a panic stop.
Selec-Speed Control (SSC) — If Equipped
SSC is intended for off-road driving in 4WD Low only. SSC
maintains vehicle speed by actively controlling engine
torque and brakes.
SSC 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 SSC
SSC is enabled by pushing the SSC switch, but the
following conditions must also be met to enable SSC:
 The driveline is in 4WD Low.
 The vehicle speed is below 5 mph (8 km/h).
 The parking brake is released.
 The driver is not applying throttle.
 The driver door is closed (If doors are attached, the
door must be closed. If doors are detached, then driver
seat belt must be buckled).
Activating SSC
Once SSC is enabled it will activate automatically once the
following conditions are met:
 The driver releases the throttle.
 The driver releases the brake.
 The transmission is in any selection other than PARK.
 Your vehicle speed is below 20 mph (32 km/h).
 The driver door is closed. (If doors are attached, the
door must be closed. If doors are detached, then driver
seat belt must be buckled).
SAFETY 157