Jeep Cherokee 2009 Operating Information Manual page 140

wheel lift due to other factors, such as road
conditions, leaving the roadway, or striking ob-
jects or other vehicles.
NOTE:
ERM is disabled anytime the ESP is in "Full
Off" mode. Refer to ESP (Electronic Stability
Program) for a complete explanation of the
available ESP modes.
WARNING!
Many factors, such as vehicle loading, road
conditions, and driving conditions, influence the
chance that wheel lift or rollover may occur.
Electronic Roll Mitigation (ERM) cannot prevent
all wheel lift or rollovers, especially those that
involve leaving the roadway or striking objects or
other vehicles. Only a safe, attentive, and skillful
driver can prevent accidents. The capabilities of
an ERM-equipped vehicle must never be ex-
ploited in a reckless or dangerous manner, which
could jeopardize the user's safety or the safety of
others.
Hill Start Assist (HSA)
The HSA system is designed to help the driver
accelerate the vehicle 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 ex-
pires, the system will release brake pressure and
the vehicle will roll down the hill as normal. The
system will release brake pressure in proportion to
amount of throttle applied.
The following conditions must be met in order for
HSA to activate:
• The vehicle must be stopped.
• The vehicle must be on a 7% or greater incline.
• The gear selection must match vehicle uphill
direction (i.e. vehicle facing uphill is in forward
gear; vehicle backing uphill is in REVERSE
gear).
• For vehicles equipped with an automatic trans-
mission, the HSA will work in REVERSE gear
and all forward gears. The system will not
activate if the transmission is in PARK.
• For vehicles equipped with a manual transmis-
sion, the HSA will work in REVERSE gear,
NEUTRAL, and all forward gears.
WARNING!
There may be situations where the HSA (Hill
Start Assist) will not activate and slight rolling
may occur, such as on minor hills (i.e., less than
7%), 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 responsibil-
ity 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 atten-
tion is always required while driving to maintain
safe control of your vehicle. Failure to follow
these warnings can result in an accident or
serious personal injury.
Towing with HSA
HSA will provide assistance during acceleration
on an incline while towing a trailer.
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