2020 JEEP GRAND CHEROKEE automatic transmission

downhill. This is normal operation and nec-
essary to maintain set speed. When driving
up hill and down hill, the ACC system will
cancel if the braking temperature exceeds
normal range (overheated).
Setting The Following Distance In ACC
The specified following distance for ACC can
be set by varying the distance setting be-
tween four bars (longest), three bars (long),
two bars (medium) and one bar (short). Using
this distance setting and the vehicle speed,
ACC calculates and sets the distance to the
vehicle ahead. This distance setting displays
in the instrument cluster display.
To increase the distance setting, push the
Distance Setting — Increase button and re-
lease. Each time the button is pushed, the
distance setting increases by one bar (lon-
ger).
To decrease the distance setting, push the
Distance Setting — Decrease button and re-
lease. Each time the button is pushed, the
distance setting decreases by one bar
(shorter).
PARKSENSE REAR PARK
ASSIST — IF EQUIPPED
The ParkSense Rear Park Assist system pro-
vides visual and audible indications of the
distance between the rear fascia and a de-
tected obstacle when backing up, e.g. during
a parking maneuver. If your vehicle is
equipped with an automatic transmission,
the vehicle brakes may be automatically ap-
plied and released when performing a reverse
parking maneuver if the system detects a
possible collision with an obstacle.
Refer to “ParkSense System Usage Precau-
tions” in this section for limitations of this
system and recommendations.
ParkSense will retain the last system state
(enabled or disabled) from the last ignition
cycle when the ignition is changed to the
ON/RUN position.
ParkSense Sensors
The four ParkSense sensors, located in the
rear fascia/bumper, monitor the area behind
the vehicle that is within the sensors’ field of
view. The sensors can detect obstacles from
approximately 12 inches (30 cm) up to
79 inches (200 cm) from the rear fascia/
bumper in the horizontal direction, depend-
ing on the location, type and orientation of
the obstacle.
ParkSense Warning Display
The ParkSense Warning screen will only be
displayed if Sound and Display is selected
from the Customer - Programmable Features
section of the Uconnect System.
Refer to "Uconnect Settings” in “Multime-
dia” in your Owner’s Manual for further infor-
mation.
The ParkSense Warning screen is located
within the instrument cluster display. It pro-
vides visual warnings to indicate the distance
between the rear fascia/bumper and the de-
tected obstacle.
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WARNING!
• Drivers must be careful when backing up
even when using ParkSense. Always
check carefully behind your vehicle, look
behind you, and be sure to check for
pedestrians, animals, other vehicles, ob-
structions, and blind spots before back-
ing up. You are responsible for safety
and must continue to pay attention to
your surroundings. Failure to do so can
result in serious injury or death.
• Before using ParkSense, it is strongly
recommended that the ball mount and
hitch ball assembly is disconnected
from the vehicle when the vehicle is not
used for towing. Failure to do so can
result in injury or damage to vehicles or
obstacles because the hitch ball will be
much closer to the obstacle than the rear
fascia when the loudspeaker sounds the
continuous tone. Also, the sensors could
detect the ball mount and hitch ball
assembly, depending on its size and
shape, giving a false indication that an
obstacle is behind the vehicle.
CAUTION!
• ParkSense is only a parking aid and it is
unable to recognize every obstacle, in-
cluding small obstacles. Parking curbs
might be temporarily detected or not
detected at all. Obstacles located above
or below the sensors will not be detected
when they are in close proximity.
• The vehicle must be driven slowly when
using ParkSense in order to be able to
stop in time when an obstacle is de-
tected. It is recommended that the
driver looks over his/her shoulder when
using ParkSense.
PARKSENSE FRONT AND
REAR PARK ASSIST — IF
EQUIPPED
The ParkSense Park Assist system provides
visual and audible indications of the distance
between the rear and/or front fascia and a
detected obstacle when backing up or moving
forward, e.g. during a parking maneuver. If
your vehicle is equipped with an automatictransmission, the vehicle brakes may be au-
tomatically applied and released when per-
forming a reverse parking maneuver if the
system detects a possible collision with an
obstacle.
Refer to “ParkSense System Usage Precau-
tions” in “Starting And Operating” in your
Owner’s Manual for limitations of this system
and recommendations.
ParkSense will retain the last system state
(enabled or disabled) from the last ignition
cycle when the ignition is changed to the
ON/RUN position.
ParkSense Sensors
The four ParkSense sensors (or six, if
equipped with Active Park Assist), located in
the rear fascia/bumper, monitor the area be-
hind the vehicle that is within the sensors’
field of view. The sensors can detect ob-
stacles from approximately 12 inches
(30 cm) up to 79 inches (200 cm) from the
rear fascia/bumper in the horizontal direc-
tion, depending on the location, type and
orientation of the obstacle.
179

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 Automatic 13,099 lbs (5,942 kg) 55 sq ft (5.11 sq m) 6,500 lbs (2,949 kg) 324 lbs (147 kg)
6.4L Automatic 13,002 lbs (5,898 kg) 55 sq ft (5.11 sq m) 6,500 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.Trailer Hitch Receiver Cover Removal
(Summit Models) — If Equipped
Your vehicle may be equipped with a trailer
hitch receiver cover, this must be removed to
access the trailer hitch receiver (if equipped).
This hitch receiver cover is located at the
bottom center of the rear fascia.1. Turn the two locking retainers located at
the bottom of the hitch receiver cover a
1/4 turn counterclockwise.
NOTE:
Use a suitable tool such as a coin in the
slot of the locking retainer if needed for
added leverage.
STARTING AND OPERATING
194

Preparations For Jacking
CAUTION!
Always lift or jack the vehicle from the
correct jacking points. Failure to follow
this information could cause damage to
the vehicle or underbody components.
NOTE:
To assist with changing a spare tire, the air
suspension system (if equipped) has a fea-
ture which allows the automatic leveling to
be disabled.
1. Park the vehicle on a firm, level surface.
Avoid ice or slippery surfaces.
WARNING!
Do not attempt to change a tire on the side
of the vehicle close to moving traffic. Pull
far enough off the road to avoid being hit
when operating the jack or changing the
wheel.
2. Turn on the Hazard Warning flasher.
3. Apply the parking brake.4. Place the gear selector into PARK.
5. Turn the ignition OFF.
6. Block both the front and rear of the wheel
diagonally opposite of the jacking posi-
tion. For example, if changing the right
front tire, block the left rear wheel.
NOTE:
Passengers should not remain in the ve-
hicle when the vehicle is being jacked.7. For vehicles equipped with Quadra-Lift,
refer to “Quadra-Lift — If Equipped” in
“Starting And Operating” in the Owner’s
Manual for further information on dis-
abling automatic leveling.
Jacking Instructions
WARNING!
Carefully follow these tire changing warn-
ings to help prevent personal injury or
damage to your vehicle:
• Always park on a firm, level surface as
far from the edge of the roadway as
possible before raising the vehicle.
• Turn on the Hazard Warning flasher.
• Block the wheel diagonally opposite the
wheel to be raised.
• Apply the parking brake firmly and set
the transmission in PARK.
• Never start or run the engine with the
vehicle on a jack.
• Do not let anyone sit in the vehicle when
it is on a jack.
• Do not get under the vehicle when it is
on a jack. If you need to get under a
Wheel Blocked
IN CASE OF EMERGENCY
218

WARNING!
boiling point. This may cause it to boil
unexpectedly during hard or prolonged
braking, resulting in sudden brake fail-
ure. This could result in a collision.
• Overfilling the brake fluid reservoir can
result in spilling brake fluid on hot en-
gine parts, causing the brake fluid to
catch fire. Brake fluid can also damage
painted and vinyl surfaces, care should
be taken to avoid its contact with these
surfaces.
• Do not allow petroleum based fluid to
contaminate the brake fluid. Brake seal
components could be damaged, causing
partial or complete brake failure. This
could result in a collision.
Automatic Transmission
Fluid Level Check
The fluid level is preset at the factory and
does not require adjustment under normal
operating conditions. Routine fluid level
checks are not required; therefore the trans-
mission has no dipstick. An authorized dealercan check your transmission fluid level using
special service tools. If you notice fluid leak-
age or transmission malfunction, visit an au-
thorized dealer immediately to have the
transmission fluid level checked. Operating
the vehicle with an improper fluid level can
cause severe transmission damage.
CAUTION!
If a transmission fluid leak occurs, visit an
authorized dealer immediately. Severe
transmission damage may occur. An au-
thorized dealer has the proper tools to
adjust the fluid level accurately.
Maintenance-Free Battery
Your vehicle is equipped with a maintenance-
free battery. You will never have to add water,
nor is periodic maintenance required.
WARNING!
• Using the battery with low fluid will
irreparably damage the battery and may
cause an explosion.
WARNING!
• When performing any operation on the
battery or near it, always protect your
eyes with special goggles.
• Batteries contain substances which are
very dangerous for the environment. For
battery replacement, contact an autho-
rized dealership.
• Battery fluid is a corrosive acid solution
and can burn or even blind you. Do not
allow battery fluid to contact your eyes,
skin, or clothing. Do not lean over a
battery when attaching clamps. If acid
splashes in eyes or on skin, flush the
area immediately with large amounts of
water. Refer to “Jump Starting Proce-
dure” in “In Case Of Emergency” for
further information.
• Battery gas is flammable and explosive.
Keep flame or sparks away from the
battery. Do not use a booster battery or
any other booster source with an output
greater than 12 Volts. Do not allow cable
clamps to touch each other.
SERVICING AND MAINTENANCE
256

Chassis
Component Fluid, Lubricant, or Genuine Part
Automatic Transmission We recommended you use TUTELA TRANSMISSION AS8 Fluid, or equivalent, meeting require-
ments of FCA Material Standard 9.55550-AV5 or MS.90030-A5. Failure to use the correct fluid
may affect the function or performance of your transmission.
Transfer Case – Single-Speed (Quadra-Trac I) We recommended you use TUTELA TRANSMISSION POWERGEAR 4 Fluid, or equivalent, meet-
ing requirements of FCA Material Standard MS-10216.
Transfer Case – Two-Speed (Quadra-Trac II) We recommended you use TUTELA TRANSMISSION FORCE 4 Fluid, or equivalent, meeting re-
quirements of FCA Material Standard 9.55550-AV4 or MS-9602 (ATF+4).
Axle Differential (Front) We recommend you use TUTELA TRANSMISSION MULTIAXLE or equivalent, SAE 75W-85 (API-
GL5).
Axle Differential (Rear) – With Electronic
Limited-Slip Differential (ELSD)We recommend you use TRANSMISSION AXLE-DRIVE with friction modifier, or equivalent, SAE
75W-85 (API-GL5).
Axle Differential (Rear) – Without Electronic
Limited-Slip Differential (ELSD)We recommend you use TUTELA TRANSMISSION MULTIAXLE or equivalent, SAE 75W-85 (API-
GL5).
Brake Master Cylinder We recommend you use DOT 3, SAE J1703 brake fluid. If DOT 3 brake fluid is not available
then TUTELA TOP4/S, FMVSS no. 116 DOT 4, ISO 4925 SAE J1704, or equivalent, is accept-
able.
DOT 4 Brake fluid must be replaced every 24 months regardless of mileage.
TECHNICAL SPECIFICATIONS
294

Chassis
Component Fluid, Lubricant, or Genuine Part
Automatic Transmission We recommended you use TUTELA TRANSMISSION AS8 Fluid, or equivalent, meeting require-
ments of FCA Material Standard 9.55550-AV5 or MS.90030-A5. Failure to use the correct fluid
may affect the function or performance of your transmission.
Transfer Case – Single-Speed (Selec-Track) We recommended you use TUTELA TRANSMISSION FORCE 4 Fluid, or equivalent, meeting
requirements of FCA Material Standard 9.55550-AV4 or MS-9602 (ATF+4).
Axle Differential (Front) We recommend you use TUTELA TRANSMISSION MULTIAXLE or equivalent, SAE 75W-85
(API-GL5).
Axle Differential (Rear) – With Electronic
Limited-Slip Differential (ELSD)We recommend you use TRANSMISSION AXLE-DRIVE with friction modifier, or equivalent, SAE
75W-85 (API-GL5).
Brake Master Cylinder We recommend you use DOT 3, SAE J1703 brake fluid. If DOT 3 brake fluid is not available then
TUTELA TOP4/S, FMVSS no. 116 DOT 4, ISO 4925 SAE J1704, or equivalent, is acceptable
If using DOT 4 brake fluid, the fluid must be changed every 24 months. This interval is time based
only, mileage intervals do not apply.
297

NOTE:
• To view a Blu-ray disc on the radio, press
the “Media” button on the touchscreen,
and then press the “Disc” button. Press the
“Play” button, and then the “full screen”
button.
• Viewing a Blu-ray disc on the radio screen is
not available in all states/provinces. The
vehicle must be stopped, and the gear se-
lector must be in the PARK position for
vehicles with automatic transmission.
325