Jeep Grand Cherokee 2015, Operating Information Manual

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vehicle. If you must drive through water, try to
determine 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 minimize 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
Avoid driving in standing water deeper than 20
inches (51 cm), and reduce speed appropriately
to minimize wave effects. Maximum speed in 20
inches (51 cm) of water is less than 5 mph
(8 km/h).
Maintenance
After driving through deep water, inspect your
vehicle fluids and lubricants (engine, transmis-
sion, Power Transfer Unit and Rear Drive Mod-
ule) to assure they have not been contami-
nated. Contaminated fluids and lubricants
(milky, foamy in appearance) should be flushed/
changed as soon as possible to prevent com-
ponent 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. Refer to “Four-Wheel
Drive Operation” in “Starting and Operating” for
further information. Do not shift to a lower gear
than necessary to maintain headway. Over-
revving the engine can spin the wheels and
traction will be lost.
Avoid abrupt downshifts on icy or slippery roads
because engine braking may cause skidding
and loss of control.
Hill Climbing
NOTE:
Before attempting to climb a hill, determine
the conditions at the crest and/or on the
other side.
Before climbing a steep hill,
shift the trans-
mission 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.
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
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