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STARTING AND OPERATING 131
the depth and the bottom condition (and location
of any obstacles) prior to entering. Proceed with
caution and maintain a steady controlled speed
less than 5
mph (8 km/h) in deep water to
minimi
ze wave effects.
Flowing Water
If the water is swift flowing and rising (as in storm
run-off
) avoid crossing until the water level recedes
and/or the flow rate is reduced. If you must cross
flowing-water, avoid depths in excess of 9
inches
(22 cm
). The flowing water can erode the
streambed causing your vehicle to sink into deeper
water. Determine exit point(s) that are downstream
of your entry point to allow for drifting.
Standing Water — Trailhawk Only
Avoid driving in standing water deeper than
1
9 inches (48 cm), and reduce speed
appropr
iately to minimize wave effects. Maximum
speed in 19
inches (48 cm) of water is less than
5 mph (8 km/h).
Maintenance
After driving through deep water, inspect your
v
ehicl
e fluids and lubricants (engine, transmission,
Power Transfer Unit and Rear Drive Module) to
ensure they have not been contaminated.
Contaminated fluids and lubricants (milky, foamy
in appearance) should be flushed/changed as
soon as possible to prevent component damage.
Driving In Snow, Mud And Sand
In heavy snow, when pulling a load, or for
additional control at slower speeds, shift the
transmission to a low gear and shift the 4WD
system to the appropriate terrain mode, using
4WD Low if necessary
Ú page 91. Do not shift to a
lower gear than necessary to maintain headway.
Over-r
evving the engine can spin the wheels and
traction will be lost.
Avoid abrupt downshifts on icy or slippery roads
becaus
e engine braking may cause skidding and
loss of control.
Hill Climbing
NOTE:
Before attempting to climb a hill, determine the
conditi
ons at the crest and/or on the other side.
Before climbing a steep hill, shift the transmission
to a lower gear and shift the 4WD System to 4WD
Low. Use first gear and 4WD Low for very steep
hills.
If you stall or begin to lose headway while climbing
a steep hill, allow your vehicle to come to a stop
and immediately apply the brakes. Restart the
engine and shift to REVERSE. Back slowly down the
hill allowing the compression braking of the engine
to help regulate your speed. If the brakes are
required to control vehicle speed, apply them
lightly and avoid locking or skidding the tires.
NOTE:
Remember, never drive diagonally across a hill -
drive
straight up or down.
If the wheels start to slip as you approach the crest
of a hill, ease off the accelerator and maintain
headway by turning the front wheels slowly left and
right. This may provide a fresh “bite” into the
surface and will usually provide traction to
complete the climb.
Traction Downhill
Shift the transmission into a low gear and the 4WD
System to 4WD Low range or select Hill Descent
Control (if equipped)
Ú page 222 . Let the vehicle
go slowly down the hill with all four wheels turning
agains
t engine compression drag. This will permit
you to control the vehicle speed and direction.
When descending mountains or hills, repeated
brakin
g can cause brake fade with loss of braking
control. Avoid repeated heavy braking by
downshifting the transmission whenever possible.
WARNING!
If the engine stalls or you lose headway or
cannot make it to the top of a steep hill or grade,
never attempt to turn around. To do so may
result in tipping and rolling the vehicle. Always
back straight down a hill in REVERSE gear
carefully. Never back down a hill in NEUTRAL
using only the brake.
4
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