2010 JEEP GRAND CHEROKEE engine

Towing Tips
Before setting out on a trip, practice turning, stopping
and backing the trailer in an area away from heavy
traffic.
Automatic Transmission
The DRIVE range can be selected when towing. How-
ever, if frequent shifting occurs while in this range, the
TOW/HAUL mode (if equipped), or a lower gear range,
should be selected.
NOTE:Using the TOW/HAUL mode (if equipped) or
selecting a lower gear range (using the Electronic Range
Select (ERS) feature) while operating the vehicle under
heavy operating conditions, will improve performance
and extend transmission life by reducing excessive shift-
ing and heat buildup. This action will also provide better
engine braking. The transmission fluid and filter should be changed if
you REGULARLY tow a trailer for more than 45 minutes
of continuous operation. Refer to “Maintenance Sched-
ule” for the proper maintenance intervals.
NOTE:
Check the transmission fluid level before towing
(5.7L engine).
Electronic Speed Control – If Equipped

Do not use in hilly terrain or with heavy loads.
When using the speed control, if you experience speed
drops greater than 10 mph (16 km/h), disengage until
you can get back to cruising speed.
Use speed control in flat terrain and with light loads to
maximize fuel efficiency.
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Cooling System
To reduce potential for engine and transmission over-
heating, take the following actions:
City Driving
When stopped for short periods of time, shift the trans-
mission into NEUTRAL and increase engine idle speed.
Highway Driving
Reduce speed.
Air Conditioning
Turn off temporarily.
SNOW PLOW
Snow plows, winches, and other aftermarket equipment
should notbe added to the front end of your vehicle. The
airbag crash sensors may be affected by the change in the
front end structure. The airbags could deploy unexpect-
edly or could fail to deploy during a collision.
WARNING!
Do not add a snow plow, winches, or any other
aftermarket equipment to the front of your vehicle.
This could adversely affect the functioning of the
airbag system and you could be injured.
RECREATIONAL TOWING (BEHIND
MOTORHOME, ETC.)
Towing – Two-Wheel Drive Models
Recreational towing is allowed ONLY if the driveshaft
is removed. Towing with the rear wheels on the ground
while the driveshaft is connected can result in severe
transmission damage.
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WARNING!
You or others could be injured if you leave the
vehicle unattended with the transfer case in the
NEUTRAL position without first fully engaging the
parking brake. The transfer case NEUTRAL position
disengages both the front and rear driveshafts from
the powertrain and will allow the vehicle to move
even if the transmission is in PARK. The parking
brake should always be applied when the driver is
not in the vehicle.
Shifting Into NEUTRAL
Use the following procedure to prepare your vehicle for
recreational towing.
CAUTION!
It is necessary to follow these steps to be certain that
the transfer case is fully in NEUTRAL before recre-
ational towing to prevent damage to internal parts.
1. Press the brake pedal.
2. Turn the ignition switch to the ON position, engine off.
3. Shift the transmission into NEUTRAL.
4. Shift the transfer case into NEUTRAL.
Hold down the NEUTRAL “pin” switch (with a pen, etc.)
for four seconds until the LED lamp by the switch starts
to blink, indicating shift in progress. The lamp will stop
blinking (stay on solid) when the NEUTRAL shift is
complete. A “4WD SYSTEM IN NEUTRAL” message will
display on the EVIC (Electronic Vehicle Information
340 STARTING AND OPERATING

Center). Refer to “Electronic Vehicle Information Center
(EVIC)” in “Understanding Your Instrument Panel” for
further information.5. Start the engine.
6. Shift the transmission into DRIVE.
7. Release the brake pedal and ensure that there is no
vehicle movement.
8. Turn the engine off.
9. Shift the transmission into PARK.
10. Turn the ignition switch to the OFF position, and
remove key fob.
11. Apply the parking brake.
12. Attach the vehicle to the tow vehicle with tow bar.
13. Release the parking brake.
Neutral Switch
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CAUTION!
Transmission damage may occur if the transmission
is shifted into PARK with the transfer case in NEU-
TRAL and the engine running. With the transfer case
in NEUTRAL ensure that the engine is OFF prior to
shifting the transmission into PARK (refer to steps 7
and 8 above).
Shifting Out Of NEUTRAL
Use the following procedure to prepare your vehicle for
normal usage.
1. Press the brake pedal.
2. Turn the ignition switch to the ON position, engine off.
3. Shift the transmission into NEUTRAL.
4. Shift the transfer case out of NEUTRAL.Hold down the NEUTRAL “pin” switch (with a pen, etc.)
for four seconds until the LED lamp by the switch starts
to blink, indicating shift in progress. The lamp will stop
blinking (go out) when shift is complete. The “4WD
SYSTEM IN NEUTRAL” message will no longer be
displayed on the EVIC (Electronic Vehicle Information
Center). Refer to “Electronic Vehicle Information Center
(EVIC)” in “Understanding Your Instrument Panel” for
further information.
342 STARTING AND OPERATING

5. Shift the transmission into PARK.
6. Start the engine.
7. Shift the transmission into DRIVE.NOTE:
When shifting out of transfer case NEUTRAL,
turning the engine OFF may be required to avoid gear
clash.
CAUTION!
Do not use a bumper-mounted clamp-on tow bar on
your vehicle. The bumper face bar will be damaged.
Neutral Switch
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WHAT TO DO IN EMERGENCIES
CONTENTS
Hazard Warning Flashers ................ 346
 If Your Engine Overheats ................ 346
 Jacking And Tire Changing ............... 348
▫ Jack Location ....................... 348
▫ Spare Tire Stowage ................... 349
▫ Spare Tire Removal ................... 349
▫ Preparations For Jacking ............... 350
▫ Jacking Instructions ................... 351 
Jump-Starting Procedures ................ 355
▫ Preparations For Jump-Start ............. 356
▫ Jump-Starting Procedure ............... 357
 Emergency Tow Hooks — If Equipped ...... 359
 Towing A Disabled Vehicle ............... 359
▫ Two-Wheel Drive Models Only .......... 359
▫ Four-Wheel Drive Models Only .......... 360
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HAZARD WARNING FLASHERS
The Hazard Warning flasher switch is located on the
switch bank just above the climate controls.Press the switch to turn on the Hazard Warning
flasher. When the switch is activated, all directional
turn signals will flash on and off to warn oncoming
traffic of an emergency. Press the switch a second time to
turn off the Hazard Warning flasher.
This is an emergency warning system and should not be
used when the vehicle is in motion. Use it when your
vehicle is disabled and is creating a safety hazard for
other motorists.
If it is necessary to leave the vehicle to go for service, the
Hazard Warning flasher will continue to operate with the
ignition key removed and the vehicle locked.
NOTE: With extended use, the Hazard Warning flasher
may run down your battery.
IF YOUR ENGINE OVERHEATS
In any of the following situations, you can reduce the
potential for overheating by taking the appropriate ac-
tion.
•On the highways — Slow down.
•In city traffic — While stopped, shift the transmission
to NEUTRAL, but do not increase the engine idle
speed.
346 WHAT TO DO IN EMERGENCIES