differential JEEP PATRIOT 2009 1.G Owners Manual

designated and approved. You should tread lightly and
avoid damage to the environment. You should know
your vehicles abilities and be able to recover it if some-
thing goes wrong. You should never stop or shut a
vehicle off when crossing deep water unless you ingested
water into the engine air intake. If the engine stalls, do
not attempt to restart it. Determine if it has ingested
water first. The key to any crossing is low and slow. You
want to use low (L Off-Road) with the 4WD LOCK
engaged and proceed very slowly with a constant slow
speed {3-5 mph (5–8 km/h) maximum} and light throttle.
Keep the vehicle moving; do not try to accelerate through
the crossing. After crossing any water higher than the
bottom of the axle differentials, you should inspect all of
the vehicle fluids for signs of water ingestion.CAUTION!
Water ingestion into the transaxle, transfer case,
engine or vehicle interior can occur if you drive too
fast or through too deep of water. Water can cause
permanent damage to engine, driveline or other
vehicle components and your brakes will be less
effective once wet and/or muddy.
Before You Cross Any Type Of Water
As you approach any type of water you need to deter-
mine if you can cross it safely and responsibly. If neces-
sary, get out and walk through the water or probe it with
a stick. You need to be sure of its depth, approach angle,
current and bottom condition. Be careful of murky or
muddy waters, check for hidden obstacles. Make sure
you will not be intruding on any wildlife and you can
recover the vehicle if necessary. The key to a safe crossing
is the water depth, current and bottom conditions. On
STARTING AND OPERATING 279
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Traction Control System (TCS)
This system monitors the amount of wheel spin of each of
the driven wheels. If wheel spin is detected, brake
pressure is applied to the slipping wheel(s) and engine
power is reduced to provide enhanced acceleration and
stability. A feature of the TCS system functions similar to
a limited slip differential and controls the wheel spin
across a driven axle. If one wheel on a driven axle is
spinning faster than the other, the system will apply the
brake of the spinning wheel. This will allow more engine
torque to be applied to the wheel that is not spinning.
This feature remains active even if TCS and ESP are in
either the “Partial Off” or “Full Off” modes. Refer to
“Electronic Stability Program (ESP)” in this Section of this
manual.
Electronic Roll Mitigation (ERM)
This system anticipates the potential for wheel lift by
monitoring the driver ’s steering wheel input and the
speed of the vehicle. When ERM determines that the rateof change of the steering wheel angle and vehicles speed
are sufficient to potentially cause wheel lift, it applies the
brake of the appropriate wheel and may also reduce
engine power to lessen the chance that wheel lift will
occur. ERM will only intervene during very severe or
evasive driving maneuvers.
ERM can only reduce the chance of wheel lift occurring
during severe or evasive driving maneuvers. It can not
prevent wheel lift due to other factors such as road
conditions, leaving the roadway or striking objects or
other vehicles.
NOTE:Anytime the ESP system is in the “Full Off”
mode, ERM is disabled. Refer to “Electronic Stability
Program (ESP)” for a complete explanation of the avail-
able ESP modes.
294 STARTING AND OPERATING

Radial Ply Tires......................... 312
Radio Operation........................ 242
Radio, Satellite.......................... 234
Rear Axle (Differential).................... 387
Rear Drive Assembly..................... 387
Rear Liftgate (Sedan)...................... 34
Rear Seat, Folding....................... 120
Rear Window Defroster................... 158
Rear Window Features.................... 157
Rear Wiper/Washer...................... 157
Recorder, Event Data...................... 58
Recreational Towing...................... 348
Refrigerant............................ 375
Reminder, Seat Belt....................... 46
Remote Control
Door Locks........................... 20
Security Alarm......................... 19
Remote Keyless Entry (Sedan)............... 20
Remote Sound System (Radio) Controls........ 240Replacement Bulbs....................... 397
Replacement Keys........................ 17
Replacement Parts....................... 368
Replacement Tires....................... 316
Reporting Safety Defects................... 430
Restraints, Child.......................60,66
Restraints, Infant......................... 61
Restraints, Occupant...................... 36
Retractable Cargo Area Cover............... 155
Roll Over Warning........................ 4
Roof Type Carrier....................... 159
Rotation, Tires.......................... 318
Safety Checks Inside Vehicle................. 69
Safety Checks Outside Vehicle............... 70
Safety Defects, Reporting.................. 430
Safety Information, Tire................... 300
Safety Tips............................. 69
Satellite Radio.......................... 234
INDEX 447
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