park assist JEEP COMMANDER 2009 1.G User Guide

HSA (Hill Start Assist) (4WD Models With NV245
Two–Speed Transfer Case Only)
The HSA system is designed to assist the driver when
starting a vehicle from a stop on a hill. HSA will maintain
the level of brake pressure the driver applied for a short
period of time after the driver takes their foot off of the
brake pedal. If the driver does not apply the throttle
during this short period of time, the system will release
brake pressure and the vehicle will roll down the hill. The
system will release brake pressure in proportion to
amount of throttle applied as the vehicle starts to move in
the intended direction of travel.
HSA Activation Criteria
The following criteria must be met in order for HSA to
activate:
•Vehicle must be stopped.
•Vehicle must be on a 8% grade or greater hill.
•Gear selection matches vehicle uphill direction (i.e.,
vehicle facing uphill is in forward gear; vehicle back-
ing uphill is in REVERSE gear).
HSA will work in REVERSE and all forward gears when
the activation criteria have been met. The system will not
activate if the vehicle is placed in NEUTRAL or PARK.
WARNING!
There may be situations on minor hills (i.e., less than
8%), with a loaded vehicle, or while pulling a trailer,
when the system will not activate and slight rolling
may occur. This could cause a collision with another
vehicle or object. Always remember the driver is
responsible for braking the vehicle.
332 STARTING AND OPERATING

Towing with HSA
HSA will provide assistance when starting on a grade
when pulling a trailer.
WARNING!
•If you use a trailer brake controller with your
trailer, your trailer brakes may be activated and
deactivated with the brake switch. If so, when the
brake pedal is released there may not be enough
brake pressure to hold the vehicle and trailer on a
hill and this could cause a collision with another
vehicle or object behind you. In order to avoid
rolling down the hill while resuming acceleration,
manually activate the trailer brake prior to releas-
ing the brake pedal. Always remember the driver
is responsible for braking the vehicle.
(Continued)
WARNING! (Continued)
•HSA is not a parking brake. If you stop the vehicle
on a hill without putting the transmission in
PARK and using the parking brake, it will roll
down the hill and could cause a collision with
another vehicle or object. Always remember to use
the parking brake while parking on a hill, and that
the driver is responsible for braking the vehicle.
HSA Off
If you wish to turn off the HSA system, it can be done
using the Customer Programmable Features in the Elec-
tronic Vehicle Information Center (EVIC). Refer to “Elec-
tronic Vehicle Information Center (EVIC)” in Section 4 of
this manual.
STARTING AND OPERATING 333
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Special Additives...................... 440
Torque Converter...................... 305
Autostick............................. 301
Auxiliary Electrical Outlet (Power Outlet)...... 173
Auxiliary Power Outlet................... 173
Battery............................... 425
Emergency Starting..................... 409
Keyless Transmitter Replacement (RKE)....... 25
Saving Feature (Protection)............... 145
Belts, Seat.............................. 43
Body Mechanism Lubrication............... 427
B-Pillar Location........................ 342
Brake Assist System...................... 324
Brake Control System, Electronic............. 323
Brake Fluid............................ 437
Brake System........................... 437
Anti-Lock (ABS)....................320,323
Fluid Check.......................... 437Master Cylinder....................... 437
Parking............................. 318
Warning Light........................ 191
Brake/Transmission Interlock............... 297
Break-In Recommendations, New Vehicle........ 73
Bulb Replacement.....................457,458
Calibration, Compass..................... 210
Camera, Rear........................... 160
Capacities, Fluid........................ 465
Caps, Filler
Fuel............................... 375
Power Steering........................ 317
Radiator (Coolant Pressure)............... 434
Car Washes............................ 444
Carbon Monoxide Warning...............74,371
Cargo Area Features...................... 178
Cargo Compartment...................... 178
Luggage Carrier....................... 181
INDEX 497
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