User Manual - Page 411

For 2019 Wrangler.

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STARTING AND OPERATING 409
Driving Through Water
Extreme care should be taken crossing any type of water.
Water c
rossings should be avoided, if possible, and only be
attempted when necessary in a safe, responsible manner.
You should only drive through areas which are 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
(automatic 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 th
e 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.
Before You Cross Any Type Of Water
As you approach any type of water, you need to determine if
you can
cross it safely and responsibly. If necessary, 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 condi
-
tions. On soft bottoms, the vehicle will sink in, effectively
increas
ing the water level on the vehicle. Be sure to consider
this when determining the depth and the ability to safely cross.
CAUTION!
Water ingestion into the axles, transmission, 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.
When driving through water, do not exceed 5 mph
(8 k
m/h). Always check water depth before entering as
a preca
ution, and check all fluids afterward. Driving
through water may cause damage that may not be
covered by the New Vehicle Limited Warranty.
5
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