differential JEEP WRANGLER 2009 Owners Manual

designated and approved. You should tread lightly and
avoid damage to the environment. You should know
your vehicle’s abilities and be able to recover it if
something 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. Shift
into first gear (manual transmission), or DRIVE (auto-
matic transmission), with the transfer case in the 4L
(Low) position and proceed very slowly with a constant
slow speed {3 to 5 mph (5 to 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.

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 “ESP (Electronic Stability Program)” in
this section.
Brake Assist System (BAS)
The BAS is designed to optimize the vehicle’s braking
capability during emergency braking maneuvers. The
system detects an emergency braking situation by sens-
ing the rate and amount of brake application and then
applies optimum pressure to the brakes. This can help
reduce braking distances. The BAS complements the
anti-lock brake system (ABS). Applying the brakes very
quickly results in the best BAS assistance. To receive thebenefit of the system, you must apply continuous brak-
ing pressure during the stopping sequence. Do not
reduce brake pedal pressure unless braking is no longer
desired. Once the brake pedal is released, the BAS is
deactivated.

Oil Pressure Light....................... 201
Onboard Diagnostic System ..............402,403
Operator Manual (Owner’s Manual) ............ 6
Outside Rearview Mirrors .................. 82
Overheating, Engine ................... 205,388
Owner’s Manual (Operator Manual) .........6,477
Paint Care ............................. 428
Paint Damage .......................... 428
Panic Alarm ............................ 21
Parking Brake .......................... 315
Passing Light ........................... 96
Pets .................................. 73
Phone, Cellular .......................... 82
Phone, Hands-Free (uconnect) ............... 82
Placard, Tire and Loading Information ......... 339
Polishing and Waxing ..................... 429
Power Door Locks ........................... 32 Steering
.......................... 313,314
Windows ............................. 35
Pregnant Women and Seat Belts .............. 48
Preparation for Jacking .................... 390
Pretensioners Seat Belts ............................ 46
Radial Ply Tires ......................... 346
Radio Operation ........................ 263
Radio, Satellite (uconnect studios)........... 258
Rear Axle (Differential) .................... 427
Rear Swing Gate ......................... 37
Rear Window Defroster ................... 193
Rear Window Features .................... 192
Rear Wiper/Washer ...................... 192
Rearview Mirrors ........................ 81
Recorder, Event Data ...................... 59
Recreational Towing ...................... 382
Shifting into Transfer Case Neutral (N) ....... 383
492 INDEX