2021 JEEP GRAND CHEROKEE suspension

QUADRA-LIFT — IF EQUIPPED............ 163Description.................... 163
Air Suspension Modes............. 165
Instrument Cluster Display Messages..... 166
Operation..................... 166
SELEC-TERRAIN — IF EQUIPPED........... 167Selec-Terrain Mode Selection......... 167
Instrument Cluster Display Messages..... 168
SELEC-TRACK — IF EQUIPPED (SRT)........ 168Custom....................... 169
Active Damping System............. 169
Launch Control— If Equipped......... 170
Guidelines For Track Use............ 171
SPEED CONTROL — IF EQUIPPED.......... 172To Activate.................... 173
To Set A Desired Speed............ 173
To Resume Speed................ 173
To Deactivate................... 174
ADAPTIVE CRUISE CONTROL (ACC)
— IF EQUIPPED.................... 174
To Activate/Deactivate.............. 174
To Set A Desired ACC Speed.......... 175
To Resume.................... 175
To Vary The Speed Setting........... 175
Setting The Following Distance In ACC.... 177
PARKSENSE REAR PARK ASSIST — IF EQUIPPED . . 177ParkSense Sensors................ 177
ParkSense Warning Display........... 177
Enabling And Disabling ParkSense...... 178
ParkSense System Usage Precautions.... 178
PARKSENSE FRONT AND REAR PARK ASSIST — IF
EQUIPPED....................... 179
ParkSense Sensors................ 179
Enabling And Disabling ParkSense...... 180
PARKSENSE ACTIVE PARK ASSIST SYSTEM — IF
EQUIPPED....................... 180
Enabling And Disabling The ParkSense Active
Park Assist System................ 181
LANESENSE — IF EQUIPPED............. 181LaneSense Operation.............. 181
Turning LaneSense On Or Off......... 182
LaneSense Warning Message.......... 182
Changing LaneSense Status.......... 183
PARKVIEW REAR BACK UP CAMERA — IF
EQUIPPED....................... 184
REFUELING THE VEHICLE — GASOLINE ENGINE . . . 185
Emergency Fuel Filler Door Release..... 187
REFUELING THE VEHICLE — DIESEL ENGINE.... 188Avoid Using Contaminated Fuel........ 190
AdBlue®(UREA) — If Equipped....... 190
TRAILER TOWING................... 192Trailer Towing Weights (Maximum Trailer Weight
Ratings) — Non SRT.............. 192
Trailer Towing Weights (Maximum Trailer Weight
Ratings) — SRT................. 194
Trailer Hitch Receiver Cover Removal (Summit
Models) — If Equipped............. 194
Trailer Hitch Receiver Cover Removal (SRT
Models) — If Equipped............. 196
RECREATIONAL TOWING (BEHIND MOTORHOME,
ETC.).......................... 198
Towing This Vehicle Behind Another
Vehicle....................... 198
Recreational Towing — Two Wheel Drive
Models....................... 199
Recreational Towing — Quadra-Trac I
(Single-Speed Transfer Case) Four-Wheel Drive
Models....................... 199Recreational Towing — Quadra–Trac II/
Quadra–Drive II Four-Wheel Drive Models . . 200
IN CASE OF EMERGENCY
HAZARD WARNING FLASHERS............ 203
BULB REPLACEMENT................. 204
Replacement Bulbs............... 204
Bulb Replacement................ 206
FUSES......................... 210General Information............... 210
Underhood Fuses................ 210
JACKING AND TIRE CHANGING............ 217Run Flat Tires — SRT Models......... 217
Jack Location................... 217
Spare Tire Stowage............... 217
Preparations For Jacking............ 218
Jacking Instructions............... 218
Road Tire Installation.............. 222
Declaration Of Conformance.......... 222
Jack Usage Precautions............ 225
JUMP STARTING.................... 225Preparations For Jump Start.......... 226
Jump Starting Procedure............ 227
REFUELING IN EMERGENCY.............. 228
IF YOUR ENGINE OVERHEATS............ 228
MANUAL PARK RELEASE............... 229
FREEING A STUCK VEHICLE.............. 230
TOWING A DISABLED VEHICLE............ 231
Without The Key Fob.............. 233
Two-Wheel Drive Models............ 233
Four-Wheel Drive Models............ 233
Tow Eye Usage — If Equipped......... 234
Emergency Tow Hooks — If Equipped.... 235
ENHANCED ACCIDENT RESPONSE SYSTEM (EARS). . 235
TABLE OF CONTENTS
8

EVENT DATA RECORDER (EDR)............ 235
SERVICING AND MAINTENANCE
SCHEDULED SERVICING................ 236Scheduled Servicing — Non SRT....... 236
Scheduled Servicing — SRT.......... 240
Scheduled Servicing — Diesel Engine.... 244
ENGINE COMPARTMENT............... 2483.6L Engine.................... 248
5.7L Engine.................... 249
6.2L Supercharged Engine........... 250
6.4L Engine.................... 251
3.0L Diesel Engine............... 252
Checking Oil Level — Gasoline Engine.... 253
Checking Oil Level — 3.0 Diesel Engine . . . 253
Adding Washer Fluid............... 254
Brake System.................. 255
Automatic Transmission............. 256
Maintenance-Free Battery........... 256
DEALER SERVICE................... 257Air Conditioner Maintenance......... 257
Windshield Wiper Blades............ 258
Cooling System.................. 262
RAISING THE VEHICLE................. 262
TIRES.......................... 262
Tires — General Information......... 262
Tire Types..................... 267
Spare Tires — If Equipped........... 268
Wheel And Wheel Trim Care.......... 270
Tire Chains (Traction Devices) — Non-SRT . 271
Tire Chains (Traction Devices) — SRT.... 272
Tire Rotation Recommendations........ 272
STORING THE VEHICLE................ 273
BODYWORK....................... 274
Preserving The Bodywork............ 274
INTERIORS....................... 275Seats And Fabric Parts............. 275
Plastic And Coated Parts............ 276
Leather Parts................... 276
Glass Surfaces.................. 276
TECHNICAL SPECIFICATIONS
IDENTIFICATION DATA................. 277Vehicle Identification Number......... 277
WHEEL AND TIRE TORQUE SPECIFICATIONS.... 278Torque Specifications.............. 278
DIMENSIONS...................... 279
WHEELS........................ 280
WEIGHTS........................ 281
FUEL REQUIREMENTS — GASOLINE ENGINES.... 282
3.6L Engine.................... 282
5.7L Engine.................... 282
6.2L/6.4L Engine................ 283
Methanol..................... 283
Ethanol....................... 283
Reformulated Gasoline............. 284
Do Not Use E-85 In Non-Flex Fuel Vehicles . 284
CNG And LP Fuel System Modifications . . . 284
Materials Added To Fuel............ 284
Fuel Icon Identification Compliant To
EN16942..................... 284
Carbon Monoxide Warnings.......... 286
FUEL REQUIREMENTS – DIESEL ENGINE....... 287Fuel Icon Identification Compliant To
EN16942..................... 287
NON-SRT FLUID CAPACITIES............. 290
SRT FLUID CAPACITIES................ 291FLUIDS AND LUBRICANTS NON-SRT......... 291
Engine....................... 291
Chassis....................... 294
FLUIDS AND LUBRICANTS — SRT.......... 295Engine....................... 295
Chassis....................... 297
FUEL CONSUMPTION AND CO2EMISSIONS..... 298
MOPAR ACCESSORIES................. 298
Authentic Accessories By Mopar........ 298
MULTIMEDIA
CYBERSECURITY................... 300
UCONNECT 4 WITH 7-INCH DISPLAY......... 301
Uconnect 4 At A Glance............ 301
Drag & Drop Menu Bar............. 302
Radio....................... 303
Android Auto — If Equipped.......... 304
Apple CarPlay Integration — If Equipped . . 305
Apps — If Equipped............... 306
UCONNECT 4C/4C NAV WITH 8.4-INCH DISPLAY . . 307Uconnect 4C/4C NAV At A Glance...... 307
Drag & Drop Menu Bar............. 308
Radio....................... 309
Android Auto — If Equipped.......... 310
Apple CarPlay Integration — If Equipped . . 314
Apps — If Equipped............... 316
UCONNECT SETTINGS................. 316
OFF ROAD PAGES — IF EQUIPPED.......... 317
Off Road Pages Status Bar........... 317
Vehicle Dynamics................ 318
Suspension.................... 318
Pitch And Roll.................. 319
Accessory Gauges................ 319
Selec-Terrain — If Equipped.......... 320
9

hicle start-ups as long as the malfunction
exists. When the malfunction indicator is
illuminated, the system may not be able to
detect or signal low tire pressure as intended.
TPMS malfunctions may occur for a variety of
reasons, including the installation of replace-
ment or alternate tires or wheels on the ve-
hicle that prevent the TPMS from functioning
properly. Always check the TPMS malfunc-
tion telltale after replacing one or more tires
or wheels on your vehicle to ensure that the
replacement or alternate tires and wheels
allow the TPMS to continue to function
properly.
CAUTION!
The TPMS has been optimized for the
original equipment tires and wheels.
TPMS pressures and warning have been
established for the tire size equipped on
your vehicle. Undesirable system opera-
tion or sensor damage may result when
using replacement equipment that is not
of the same size, type, and/or style. After-
market wheels can cause sensor damage.
Using aftermarket tire sealants may cause
CAUTION!
the Tire Pressure Monitoring System
(TPMS) sensor to become inoperable. Af-
ter using an aftermarket tire sealant it is
recommended that you take your vehicle
to your authorized dealer to have your
sensor function checked.
The system only warns the tire pressure is
low: it is not able to inflate them.
Yellow Indicator Lights
— Air Suspension Active Indicator
Light — If Equipped
This light will illuminate when the air suspen-
sion system is actively adjusting the ride
height.
— Air Suspension Entry/Exit Indica-
tor Light— If Equipped
This light will illuminate when the vehicle is
automatically lowered from ride height posi-
tion downward for easy entry and exit of the
vehicle.
— Air Suspension Aerody-
namic Height Indicator Light— If Equipped
This light will illuminate when the air suspen-
sion system is set to the Aerodynamic setting.
— Air Suspension Off-
Road 1 Indicator Light — If Equipped
This light will illuminate when the air suspen-
sion system is set to the Off-Road 1 setting.
— Air Suspension Off-
Road 2 Indicator Light — If Equipped
This light will illuminate when the air suspen-
sion system is set to the Off-Road 2 setting.
— Forward Collision Warning Off Indi-
cator Light — If Equipped
This indicator light illuminates to indicate
that Forward Collision Warning is off.
— 4WD Low Indicator Light — If
Equipped
This light alerts the driver that the vehicle is
in the four-wheel drive LOW mode. The front
and rear driveshafts are mechanically locked
together forcing the front and rear wheels toGETTING TO KNOW YOUR INSTRUMENT PANEL
80

ESC uses sensors in the vehicle to determine
the vehicle path intended by the driver and
compares it to the actual path of the vehicle.
When the actual path does not match the
intended path, ESC applies the brake of the
appropriate wheel to assist in counteracting
the oversteer or understeer condition.
• Oversteer — when the vehicle is turning
more than appropriate for the steering
wheel position.
• Understeer — when the vehicle is turning
less than appropriate for the steering wheel
position.
The “ESC Activation/Malfunction Indicator
Light” located in the instrument cluster will
start to flash as soon as the ESC system
becomes active. The “ESC Activation/
Malfunction Indicator Light” also flashes
when the TCS is active. If the “ESC
Activation/Malfunction Indicator Light” be-
gins to flash during acceleration, ease up on
the accelerator and apply as little throttle as
possible. Be sure to adapt your speed and
driving to the prevailing road conditions.WARNING!
• Electronic Stability Control (ESC) can-
not prevent the natural laws of physics
from acting on the vehicle, nor can it
increase the traction afforded by prevail-
ing road conditions. ESC cannot prevent
accidents, including those resulting
from excessive speed in turns, driving on
very slippery surfaces, or hydroplaning.
ESC also cannot prevent accidents re-
sulting from loss of vehicle control due
to inappropriate driver input for the con-
ditions. Only a safe, attentive, and skill-
ful driver can prevent accidents. The
capabilities of an ESC equipped vehicle
must never be exploited in a reckless or
dangerous manner which could jeopar-
dize the user’s safety or the safety of
others.
• Vehicle modifications, or failure to prop-
erly maintain your vehicle, may change
the handling characteristics of your ve-
hicle, and may negatively affect the per-
formance of the ESC system. Changes to
the steering system, suspension, brak-
WARNING!
ing system, tire type and size or wheel
size may adversely affect ESC perfor-
mance. Improperly inflated and un-
evenly worn tires may also degrade ESC
performance. Any vehicle modification
or poor vehicle maintenance that re-
duces the effectiveness of the ESC sys-
tem can increase the risk of loss of
vehicle control, vehicle rollover, per-
sonal injury and death.
ESC Operating Modes
NOTE:
Depending upon model and mode of opera-
tion, the ESC system may have multiple op-
erating modes.
ESC On
This is the normal operating mode for the
ESC. Whenever the vehicle is started, the
ESC system will be in this mode. This mode
SAFETY
90

placing the transmission in PARK. This sys-
tem also locks the transmission in PARK
whenever the ignition is in the OFF mode.
NOTE:
The transmission is NOT locked in PARK
when the ignition is in the ACC mode (even
though the engine will be off). Ensure that
the transmission is in PARK, and the ignition
isOFF(not in ACC mode) before exiting the
vehicle.
Brake/Transmission Shift Interlock
System
This vehicle is equipped with a Brake Trans-
mission Shift Interlock system (BTSI) that
holds the transmission gear selector in PARK
unless the brakes are applied. To shift the
transmission out of PARK, the engine must
be running and the brake pedal must be
pressed. The brake pedal must also be
pressed to shift from NEUTRAL into DRIVE or
REVERSE when the vehicle is stopped or
moving at low speeds.
Fuel Economy (ECO) Mode
The Fuel Economy (ECO) mode can improve
the vehicle's overall fuel economy during nor-
mal driving conditions. Push the “ECO”
switch in the center stack of the instrument
panel to activate or disable ECO mode. A
light on the switch indicates when ECO mode
is disabled (for regular models) or enabled
(for SRT models).When the Fuel Economy (ECO) Mode is en-
gaged, the vehicle control systems will
change the following:
• The transmission will upshift sooner and
downshift later.
• The overall driving performance will be
more conservative.
• Vehicles with Quadra-Lift air suspension
will operate in "Aero" mode over a broader
speed range. Refer to the section on
Quadra-Lift for further information.
• In SRT models, the transmission will
launch (from a stop) in second gear, and
the torque converter clutch may engage at
lower engine speeds and remain on longer.
• Some ECO mode functions may be tempo-
rarily inhibited based on temperature and
other factors.
Active Noise Cancellation — If Equipped
Your vehicle is equipped with an Active Noise
Cancellation System. This system uses four
microphones embedded in the headliner to
detect undesirable exhaust noise, which
sometimes occurs when operating in specific
driving conditions such as ECO and Tow
ECO Switch
STARTING AND OPERATING
156

4. If vehicle is equipped with Quadra-Lift air
suspension, ensure the vehicle is set to
Normal Ride Height.
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 NEUTRAL (N) symbol will
blink, indicating shift in progress. The
light will stop blinking (stay on solid)
when the shift to NEUTRAL (N) is com-
plete. A “NEUTRAL” message will appear
in the instrument cluster display. Refer to
“Instrument Cluster Display” in “Getting
To Know Your Instrument Panel” for fur-
ther information.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. Release the parking brake only when the
vehicle is securely attached to a tow
vehicle.NOTE:
If shift conditions/interlocks are not met, a
“To Tow Vehicle Safely, Read Neutral Shift
Procedure in Owner’s Manual” message will
flash from the instrument cluster display.
Refer to “Instrument Cluster Display” in
“Getting To Know Your Instrument Panel” for
further information.
Shifting Out Of NEUTRAL (N)
Use the following procedure to prepare your
vehicle for normal usage.
1. Bring the vehicle to a complete stop.
2. Firmly apply the parking brake.
3. Start the engine.
4. Press and hold the brake pedal.
5. Shift the transmission into NEUTRAL.
6. 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.
NEUTRAL (N) Switch
STARTING AND OPERATING
162

7. When the NEUTRAL (N) indicator light
turns off, release the NEUTRAL (N)
button.
8. After the NEUTRAL (N) button has been
released, the transfer case will shift to the
position indicated by the selector switch.
Quadra-Drive II System — If Equipped
The optional Quadra-Drive II System features
two torque transfer couplings. The couplings
include an Electronic Limited-Slip Differen-
tial (ELSD) rear axle and the Quadra-Trac II
transfer case. The optional ELSD axle is fully
automatic and requires no driver input to
operate. Under normal driving conditions,
the unit functions as a standard axle, balanc-
ing torque evenly between left and rightwheels. With a traction difference between
left and right wheels, the coupling will sense
a speed difference. As one wheel begins to
spin faster than the other, torque will auto-
matically transfer from the wheel that has
less traction, to the wheel that has traction.
While the transfer case and axle coupling
differ in design, their operation is similar.
Follow the Quadra-Trac II transfer case shift-
ing information, preceding this section, for
shifting this system.
QUADRA-LIFT — IF
EQUIPPED
Description
The Quadra-Lift air suspension system pro-
vides full time load leveling capability along
with the benefit of vehicle height adjustment
by the push of a button. The vehicle will
automatically raise and lower the ride height
to adapt to the appropriate driving condi-
tions. At higher speeds, the vehicle will lower
to an aerodynamic ride height and when op-
erating in off-road modes, the vehicle will
raise the ride height accordingly. The buttonsnear the terrain switch in the center console
area can be used to set preferred ride height
to match the appropriate conditions.
•Normal Ride Height (NRH)– This is the stan-
dard position of the suspension and is
meant for normal driving.
NEUTRAL (N) Switch
Selec-Terrain Switch
1 — UP Button
2 — DOWN Button
3 — Entry/Exit Mode Indicator Lamp
(Customer Selectable)
4 — Normal Ride Height Indicator
Lamp (Customer Selectable)
5 — Off-Road 1 Indicator Lamp (Cus-
tomer Selectable)
6 — Off-Road 2 Indicator Lamp (Cus-
tomer Selectable)
163

•Off-Road 1 (OR1) (Raises the vehicle approxi-
mately 1.1 inches (28 mm))– This is the
primary position for all off-road driving until
OR2 is needed. A smoother and more com-
fortable ride will result. Push the “UP”
button once from the NRH position while
the vehicle speed is below 38 mph
(61 km/h). When in the OR1 position, if the
vehicle speed remains between 40 mph
(64 km/h) and 50 mph (80 km/h) for
greater than 20 seconds or if the vehicle
speed exceeds 50 mph (80 km/h), the
vehicle will be automatically lowered to
NRH.
•Off-Road 2 (OR2) (Raises the vehicle approxi-
mately 2.2 inches (55 mm))– This position is
intended for off-roading use only where
maximum ground clearance is required. To
enter OR2, push the “UP” button twice
from the NRH position or once from the
OR1 position while vehicle speed is below
20 mph (32 km/h). While in OR2, if the
vehicle speed exceeds 25 mph (40 km/h)
the vehicle height will be automatically
lowered to OR1.•Aero Mode (Lowers the vehicle approximately
0.6 inches (15 mm))– This position provides
improved aerodynamics by lowering the ve-
hicle. The vehicle will automatically enter
Aero Mode when the vehicle speed remains
between 52 mph (83 km/h) and 56 mph
(90 km/h) for greater than 20 seconds or if
the vehicle speed exceeds 56 mph
(90 km/h). The vehicle will return to NRH
from Aero Mode if the vehicle speed re-
mains between 20 mph (32 km/h) and
25 mph (40 km/h) for greater than 20 sec-
onds or if the vehicle speed falls below
20 mph (32 km/h). The vehicle will enter
Aero Mode, regardless of vehicle speed if
the vehicle is in “SPORT” mode.
•Entry/Exit Mode (Lowers the vehicle approxi-
mately 1.6 inches (40 mm)– This position
lowers the vehicle for easier passenger en-
try and exit as well as lowering the rear of
the vehicle for easier loading and unloading
of cargo. To enter Entry/Exit Mode, push the
“DOWN” button once from (NRH) while the
vehicle speed is below 25 mph (40 km/h).
Once the vehicle speed goes below 15 mph
(24 km/h) the vehicle height will begin to
lower. If the vehicle speed remains between15 mph (24 km/h) and 25 mph (40 km/h)
for greater than 60 seconds, or the vehicle
speed exceeds 25 mph (40 km/h) the
Entry/Exit Mode change will be cancelled.
To exit Entry/Exit Mode, press the “Up”
button once while in Entry/Exit Mode or
drive the vehicle over 15 mph (24 km/h).
NOTE:
Automatic lowering of the vehicle into Entry/
Exit Mode can be enabled through the
Uconnect Touch-Screen Radio. If this feature
is enabled, the vehicle will only lower if the
gear selector is in "PARK", the terrain switch
is in "AUTO", the transfer-case is in "AUTO”
and the vehicle level should be either in
Normal or Aero Mode. The Vehicle will not
automatically lower if the air suspension level
is in Off Rd 2 or Off Rd 1. If the vehicle is
equipped with Intrusion Theft Module (ITM),
the lowering will be suppressed when the
ignition is switched OFF and the door is open
to prevent setting the alarm off.
The Selec-Terrain switch will automatically
change the vehicle to the proper height based
on the position of the Selec-Terrain switch.
The height can be changed from the default
STARTING AND OPERATING
164