Jeep Grand Cherokee 2020 Owner's Manual page 278

276 STARTING AND OPERATING
Quadra-Lift — If Equipped
When off-roading, it is recommended that the
lowest useable vehicle height that will clear the
current obstacle or terrain be selected. The
vehicle height should then be raised as required
by the changes in terrain.
The Selec-Terrain switch will automatically
change the vehicle to the optimized height
based on the Selec-Terrain switch position. The
vehicle height can be changed from the default
height for each Selec-Terrain mode by normal
use of the air suspension switches. Refer to
"Four Wheel Drive Operation" in "Starting And
Operating" for further information.
When To Use 4WD LOW Range — If Equipped
When off-road driving, shift to 4WD LOW for
additional traction. This range should be limited
to extreme situations such as deep snow, mud,
or sand where additional low speed pulling
power is needed. Vehicle speeds in excess of
25 mph (40 km/h) should be avoided when in
4WD LOW range.
WARNING!
Do not drive in 4WD LOW Range on dry
pavement; driveline damage may result.
4WD-LOW Range locks front and rear
drivelines together and does not allow for
differential action between the front to rear
driveshafts. Driving in 4WD LOW on
pavement will cause driveline binding; use
only on wet or slippery surfaces.
Driving Through Water
Although your vehicle is capable of driving
through water, there are a number of
precautions that must be considered before
entering the water.
NOTE:
Your vehicle is capable of water fording in up to
20 inches (51 cm) of water, while crossing
small rivers or streams. To maintain optimal
performance of your vehicle's heating and venti-
lation system it is recommended to switch the
system into recirculation mode during water
fording.
CAUTION!
When driving through water, do not exceed
5 mph (8 km/h). Always check water depth
before entering as a precaution, and check all
fluids afterward. Driving through water may
cause damage that may not be covered by
the New Vehicle Limited Warranty.
Driving through water more than a few
inches/centimeters deep will require extra
caution to ensure safety and prevent damage to
your 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.