2018 JEEP GRAND CHEROKEE engine

TRAILER TOWING
Trailer Towing Weights (Maximum Trailer
Weight Ratings) — Non SRT
The following chart provides the maximum
trailer weight ratings towable for your given
drivetrain.
Engine/TransmissionMax. GTW (Gross Trailer Wt.) — with
Trailer BrakeMax. GTW (Gross Trailer Wt.) — without
Trailer BrakeTongue Wt. (See Note)
3.6L Gasoline — Standard
Cooling System3,500 lbs (1,588 kg) 1,653 lbs (750 kg) 174 lbs (79 kg)
3.6L Gasoline — Heavy
Duty Cooling System6,200 lbs (2,812 kg) 1,653 lbs (750 kg) 310 lbs (141 kg)
5.7L Gasoline — Standard
Cooling System5,000 lbs (2,268 kg) 1,653 lbs (750 kg) 250 lbs (113 kg)
5.7L Gasoline — Heavy
Duty Cooling System (ex-
cept Summit)7,716 lbs (3,500 kg) 1,653 lbs (750 kg) 386 lbs (175 kg)
5.7L Gasoline — Summit
Models With Heavy Duty
Cooling System6,500 lbs (2,949 kg) 1,653 lbs (750 kg) 386 lbs (175 kg)
185

Engine/TransmissionMax. GTW (Gross Trailer Wt.) — with
Trailer BrakeMax. GTW (Gross Trailer Wt.) — without
Trailer BrakeTongue Wt. (See Note)
3.0L Diesel All Wheel Drive ModelswithoutEngine Start Stop and Diesel Emission Fluid
All models except Summit 7,716 lbs (3,500 kg) 1,653 lbs (750 kg) 386 lbs (175 kg)
Summit Model 6,500 lbs (2,949 kg) 1,653 lbs (750 kg) 324 lbs (147 kg)
3.0L Diesel All Wheel Drive ModelswithEngine Start Stop and Diesel Emission Fluid
All models except Summit
and Trailhawk without skid
plate group7,716 lbs (3,500 kg) 1,653 lbs (750 kg) 386 lbs (175 kg)
All models except Summit
and Trailhawk with skid
plate group6,500 lbs (2,949 kg) 1,653 lbs (750 kg) 324 lbs (147 kg)
Summit and Trailhawk
models6,500 lbs (2,949 kg) 1,653 lbs (750 kg) 324 lbs (147 kg)
When towing a trailer the technically permissible laden weight may be exceeded by not more than 10% or 220 lbs (100 kg), whichever is lower
provided that the operating speed is restricted to 62 mph (100 km/h) or less.
NOTE:
The trailer tongue weight must be considered as part of the combined weight of occupants and cargo, and should never exceed the weight refer-
enced on the Tire and Loading Information placard. Refer to “Tires” in “Servicing And Maintenance” for further information.
STARTING AND OPERATING
186

Trailer Towing Weights (Maximum Trailer
Weight Ratings) — SRT
The following chart provides the maximum
trailer weight ratings towable for your given
drivetrain.
Engine/Transmission GCWR (Gross Combined Wt. Rating) Frontal Area Max. GTW (Gross Trailer Wt.) Max. Trailer Tongue Wt.
(See Note)
6.2L Supercharged
Automatic13,100 lbs (5,942 kg) 55 sq ft (5.11 sq m) 6,501 lbs (2,949 kg) 324 lbs (147 kg)
6.4L Automatic 13,003 lbs (5,898 kg) 55 sq ft (5.11 sq m) 6,501 lbs (2,949 kg) 324 lbs (147 kg)
When towing a trailer the technically permissible laden weight may be exceeded by not more than 10% or 220 lbs (100 kg), whichever is lower
provided that the operating speed is restricted to 62 mph (100 km/h) or less.
Refer to local laws for maximum trailer towing speeds.
NOTE:
The trailer tongue weight must be considered
as part of the combined weight of occupants
and cargo, and should never exceed the
weight referenced on the Tire and Loading
Information placard.
187

RECREATIONAL TOWING (BEHIND MOTORHOME, ETC.)
Towing This Vehicle Behind Another Vehicle
Towing Condition Wheels OFF The Ground Two-Wheel Drive Models Four-Wheel Drive Models
Without 4-LO RangeFour-Wheel Drive Models
With 4-LO Range
Flat Tow NONE NOT ALLOWED NOT ALLOWEDSee Instructions
•
Transmission in PARK
• Transfer case in NEU-
TRAL (N)
• Tow in forward direction
Dolly Tow FrontNOT ALLOWED NOT ALLOWED NOT ALLOWED
Rear OKNOT ALLOWED NOT ALLOWED
On Trailer ALL OK OK OK
NOTE:
Recreational towing is not allowed on SRT ve-
hicles.
These vehicles may be towed on a flatbed or
vehicle trailer provided all four wheels areOFF
the ground.NOTE:
• When towing your vehicle, always follow
applicable state and provincial laws. Con-
tact state and provincial Highway Safety
offices for additional details.
• Vehicles equipped with Quadra-Lift must
be placed in Transport Mode before tying
them down (from the body) on a trailer or
flatbed truck. Refer to “Quadra-Lift” in“Starting and Operating” for more informa-
tion. If the vehicle cannot be placed in
Transport mode (for example, engine will
not run), tie-downs should be fastened over
the tires using specific straps (not to the
body). Failure to follow these instructions
may cause fault codes to be set and/or
cause loss of proper tie-down tension.
191

Recreational Towing-Two Wheel Drive
Models
DO NOT flat tow this vehicle. Damage to the
drivetrain will result.
Recreational towing (for two-wheel drive
models) is allowed ONLY if the rear wheels
are OFF the ground. This may be accom-
plished using a tow dolly or vehicle trailer. If
using a tow dolly, follow this procedure:
1. Properly secure the dolly to the tow ve-
hicle, following the dolly manufacturer's
instructions.
NOTE:
If vehicle is equipped with Quadra-Lift air
suspension, ensure the vehicle is set to
Normal Ride Height.
2. Drive the rear wheels onto the tow dolly.
3. Firmly apply the parking brake. Shift the
transmission into PARK.
4. Turn the ignition OFF.
5. Properly secure the rear wheels to the
dolly, following the dolly manufacturer’s
instructions.6. Turn the ignition to the ON/RUN mode,
but do not start the engine.
7. Confirm that the steering column is
unlocked.
8. Install a suitable clamping device, de-
signed for towing, to secure the front
wheels in the straight position.
9. Disconnect the negative battery cable,
and secure it away from the battery post.
NOTE:
Disconnecting your vehicle battery will
erase radio presets and may affect other
vehicle settings. It may also trigger vari-
ous fault codes, causing MIL illumination
when the battery is reconnected.
CAUTION!
Towing with the rear wheels on the ground
will cause severe transmission damage.
Damage from improper towing is not cov-
ered under the New Vehicle Limited War-
ranty.
Recreational Towing — Quadra-Trac I
(Single-Speed Transfer Case) Four-Wheel
Drive Models
Recreational towing is not allowed.These
models do not have a NEUTRAL (N) position
in the transfer case.
NOTE:
This vehicle may be towed on a flatbed or
vehicle trailer provided all four wheels areOFF
the ground.
CAUTION!
Towing this vehicle in violation of the
above requirements can cause severe
transmission and/or transfer case damage.
Damage from improper towing is not cov-
ered under the New Vehicle Limited War-
ranty.STARTING AND OPERATING
192

Recreational Towing — Quadra–Trac II/
Quadra–Drive II Four-Wheel Drive Models
The transfer case must be shifted into NEU-
TRAL (N) and the transmission must be in
PARK for recreational towing. The NEUTRAL
(N) selection button is adjacent to the trans-
fer case selector switch. Shifts into and out of
transfer case NEUTRAL (N) can take place
with the selector switch in any mode position.
CAUTION!
• DO NOT dolly tow any 4WD vehicle.
Towing with only one set of wheels on the
ground (front or rear) will cause severe
transmission and/or transfer case dam-
age. Tow with all four wheels either ON
the ground, or OFF the ground (using a
vehicle trailer).
• Tow only in a forward direction. Towing
this vehicle backwards can cause severe
damage to the transfer case.
• The transmission must be in PARK for
recreational towing.
• Before recreational towing, perform the
procedure outlined under “Shifting into
CAUTION!
NEUTRAL (N)” to be certain that the
transfer case is fully in NEUTRAL (N).
Otherwise, internal damage will result.
• Towing this vehicle in violation of the
above requirements can cause severe
transmission and/or transfer case dam-
age. Damage from improper towing is
not covered under the New Vehicle Lim-
ited Warranty.
• Do not use a bumper-mounted clamp-on
tow bar on your vehicle. The bumper
face bar will be damaged.
Shifting Into NEUTRAL (N)
WARNING!
You or others could be injured or killed if
you leave the vehicle unattended with the
transfer case in the NEUTRAL (N) position
without first fully engaging the parking
brake. The transfer case NEUTRAL (N)
position disengages both the front and rear
driveshafts from the powertrain and will
allow the vehicle to roll, even if the trans-
WARNING!
mission is in PARK. The parking brake
should always be applied when the driver
is not in the vehicle.
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 (N) before recreational towing
to prevent damage to internal parts.
1. Bring the vehicle to a complete stop on
level ground, with the engine running.
2. Press and hold the brake pedal.
3. Shift the transmission into NEUTRAL.
4. If vehicle is equipped with Quadra-Lift air
suspension, ensure the vehicle is set to
Normal Ride Height.
193

5. Using a ballpoint pen or similar object,
push and hold the recessed transfer case
NEUTRAL (N) button (located by the se-
lector switch) for four seconds. The light
behind the N symbol will blink, indicating
shift in progress. The light will stop blink-
ing (stay on solid) when the shift to NEU-
TRAL (N) is complete. A “FOUR WHEEL
DRIVE SYSTEM IN NEUTRAL” message
will appear in the instrument cluster.
6. After the shift is completed and the NEU-
TRAL (N) light stays on, release the NEU-
TRAL (N) button.
7. Shift the transmission into REVERSE.8.Release the brake pedal for five seconds and
ensure that there is no vehicle movement.
9. Press and hold the brake pedal. Shift the
transmission back into NEUTRAL.
10. Firmly apply the parking brake.
11. With the transmission and transfer case
in NEUTRAL, push and hold the EN-
GINE START/STOP button until the en-
gine turns off.
12. Place the transmission gear selector in
PARK. Release the brake pedal.
13. Push the ENGINE STOP/START button
twice (without pressing the brake pedal),
to turn the ignition to the OFF mode.
14. Attach the vehicle to the tow vehicle
using a suitable tow bar.
15. Release the parking brake.
16. Turn the ignition to the ON/RUN posi-
tion, but do not start the engine.
17. Confirm that the steering column is
unlocked.
18.
Disconnect the negative battery cable, and
secure it away from the negative battery
post.
NOTE:
Disconnecting your vehicle battery will
erase radio presets and may affect other
vehicle settings. It may also trigger vari-
ous fault codes, causing MIL illumination
when the battery is reconnected.
NOTE:
• Steps 1 through 4 are requirements that
must be met before pushing the NEUTRAL
(N) button, and must continue to be met
until the shift has been completed. If any of
these requirements are not met before
pushing the NEUTRAL (N) button or are no
longer met during the shift, then the NEU-
TRAL (N) indicator light will flash continu-
ously until all requirements are met or until
the NEUTRAL (N) button is released.
• The ignition must be in the ON/RUN mode
for a shift to take place and for the position
indicator lights to be operable. If the igni-
tion is not in the ON/RUN mode, the shift
will not take place and no position indicator
lights will be on or flashing.
• A flashing NEUTRAL (N) position indicator
light indicates that shift requirements have
not been met.
NEUTRAL (N) Switch
STARTING AND OPERATING
194

• If the vehicle is equipped with Quadra-Lift
air suspension, the engine should be
started and left running for a minimum of
60 seconds (with all the doors closed) at
least once every 24 hours. This process
allows the air suspension to adjust the
vehicle’s ride height to compensate for
temperature effects.
Shifting Out Of NEUTRAL (N)
Use the following procedure to prepare your
vehicle for normal usage.
1. Bring the vehicle to a complete stop, leav-
ing it connected to the tow vehicle.
2. Firmly apply the parking brake.
3. Reconnect the negative battery cable.
4. Turn the ignition to the LOCK/OFF mode.
5. Start the engine.
6. Press and hold the brake pedal.
7. Shift the transmission into NEUTRAL.
8. Using a ballpoint pen or similar object,
push and hold the recessed transfer case
NEUTRAL (N) button (located by the se-
lector switch) for one second.9. When the NEUTRAL (N) indicator light
turns off, release the NEUTRAL (N) but-
ton. After the NEUTRAL (N) button has
been released, the transfer case will shift
to the position indicated by the selector
switch.
10. Shift the transmission into PARK. Turn
the engine OFF.
11. Release the brake pedal.
12. Disconnect vehicle from the tow vehicle.
13. Start the engine.
14. Press and hold the brake pedal.15. Release the parking brake.
16. Shift the transmission into DRIVE, re-
lease the brake pedal, and check that
the vehicle operates normally.
NOTE:
• Steps 1 through 5 are requirements that
must be met before pushing the NEUTRAL
(N) button, and must continue to be met
until the shift has been completed. If any of
these requirements are not met before
pushing the NEUTRAL (N) button or are no
longer met during the shift, the NEUTRAL
(N) indicator light will flash continuously
until all requirements are met or until the
NEUTRAL (N) button is released.
• The ignition must be in the ON/RUN mode
for a shift to take place and for the position
indicator lights to be operable. If the igni-
tion is not in the ON/RUN mode, the shift
will not take place and no position indicator
lights will be on or flashing.
• A flashing NEUTRAL (N) position indicator
light indicates that shift requirements have
not been met.
NEUTRAL (N) Switch
195