Jeep Grand Cherokee 2015, Operating Information Manual

Page: 356 / 878

6. Once the engine is started, remove the
jumper cables in the reverse sequence:
Disconnecting The Jumper Cables
1. Disconnect the negative (-) end of the
jumper cable from the engine ground of the
vehicle with the discharged battery.
2. Disconnect the opposite end of the negative
(-) jumper cable from the negative (-) post of
the booster battery.
3. Disconnect the positive (+) end of the jumper
cable from the positive (+) post of the
booster battery.
4. Disconnect the opposite end of the positive
(+) jumper cable from the positive (+) post of
the vehicle with the discharged battery.
If frequent jump-starting is required to start your
vehicle you should have the battery and charg-
ing system inspected at your authorized dealer.
CAUTION!
Accessories plugged into the vehicle power
outlets draw power from the vehicle’s bat-
tery, even when not in use (i.e., cellular
phones, etc.). Eventually, if plugged in long
enough without engine operation, the vehi-
cle’s battery will discharge sufficiently to de-
grade battery life and/or prevent the engine
from starting.
FREEING A STUCK VEHICLE
If your vehicle becomes stuck in mud, sand or
snow, it can often be moved using a rocking
motion. Turn the steering wheel right and left to
clear the area around the front wheels. For
vehicles with automatic transmission, press and
hold the lock button on the shift lever. Then shift
back and forth between DRIVE and REVERSE
(with automatic transmission) or 2ND GEAR
and REVERSE (with manual transmission),
while gently pressing the accelerator.
NOTE:
For vehicles with automatic transmission:
Shifts between DRIVE and REVERSE can
only be achieved at wheel speeds of 5 mph
(8 km/h) or less. Whenever the transmission
remains in NEUTRAL for more than two
seconds, you must press the brake pedal to
engage DRIVE or REVERSE.
Use the least amount of accelerator pedal pres-
sure that will maintain the rocking motion with-
out spinning the wheels or racing the engine.
CAUTION!
•
Racing the engine or spinning the wheels
may lead to transmission overheating and
failure. Allow the engine to idle with the
transmission in NEUTRAL for at least one
minute after every five rocking-motion
cycles. This will minimize overheating and
reduce the risk of clutch or transmission
failure during prolonged efforts to free a
stuck vehicle.
(Continued)
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