2021 JEEP WRANGLER UNLIMITED transmission

231
Automatic Transmission
Selection Of Lubricant
It is important to use the proper transmission
fluid to ensure optimum transmission perfor-
mance and life. Use only the manufacturer's
specified transmission fluid. Refer to “Fluids
And Lubricants” in “Technical Specifica -
tions” for fluid specifications. It is important
to maintain the transmission fluid at the
correct level using the recommended fluid.
NOTE:
No chemical flushes should be used in any
transmission; only the approved lubricant
should be used.
Special Additives
The manufacturer strongly recommends
against using any special additives in the
transmission. Automatic Transmission Fluid
(ATF) is an engineered product and its
performance may be impaired by supple -
mental additives. Therefore, do not add any
fluid additives to the transmission. Avoid
using transmission sealers as they may
adversely affect seals.
To avoid contamination from foreign
matter or moisture, use only new brake
fluid or fluid that has been in a tightly
closed container. Keep the master cylinder
reservoir cap secured at all times. Brake
fluid in a open container absorbs moisture
from the air resulting in a lower boiling
point. This may cause it to boil unexpect -
edly during hard or prolonged braking,
resulting in sudden brake failure. This
could result in a collision.

Overfilling the brake fluid reservoir can
result in spilling brake fluid on hot
engine 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.
WARNING! (Continued)
CAUTION!
Using a transmission fluid other than the
manufacturer’s recommended fluid may
cause deterioration in transmission shift
quality and/or torque converter shudder.
Refer to “Fluids And Lubricants” in
“Technical Specifications” for fluid
specifications.
CAUTION!
Do not use chemical flushes in your
transmission as the chemicals can damage
your transmission components. Such
damage is not covered by the New Vehicle
Limited Warranty.
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SERVICING AND MAINTENANCE
232
(Continued)
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
dealer can check your transmission fluid
level using special service tools. If you notice
fluid leakage or transmission malfunction,
visit an authorized dealer immediately to
have the transmission fluid level checked.
Operating the vehicle with an improper fluid
level can cause severe transmission damage.
RAISING THE VEHICLE
In the case where it is necessary to raise the
vehicle, go to an authorized dealer or service
station.
TIRES
Tires — General Information
Tire Pressure
Proper tire inflation pressure is essential to
the safe and satisfactory operation of your
vehicle. Four primary areas are affected by
improper tire pressure:
Safety
Fuel Economy
Tread Wear
Ride Comfort and Vehicle Stability
Safety Both underinflation and overinflation affect
the stability of the vehicle and can produce
a feeling of sluggish response or over respon
-
siveness in the steering.
NOTE:
Unequal tire pressures from side to side
may cause erratic and unpredictable
steering response.
Unequal tire pressure from side to side
may cause the vehicle to drift left or right.
Fuel Economy

Underinflated tires will increase tire rolling
resistance resulting in higher fuel consumption.

CAUTION!
If a transmission fluid leak occurs, visit an
authorized dealer immediately. Severe
transmission damage may occur. An
authorized dealer has the proper tools to
adjust the fluid level accurately.
WARNING!
Improperly inflated tires are dangerous
and can cause collisions.
Underinflation increases tire flexing and
can result in overheating and tire failure.
Overinflation reduces a tire's ability to
cushion shock. Objects on the road and
chuckholes can cause damage that
result in tire failure.

Overinflated or underinflated tires can affect
vehicle handling and can fail suddenly,
resulting in loss of vehicle control.

Unequal tire pressures can cause
steering problems. You could lose
control of your vehicle.
Unequal tire pressures from one side of
the vehicle to the other can cause the
vehicle to drift to the right or left.

Always drive with each tire inflated to the
recommended cold tire inflation pressure.

WARNING! (Continued)
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257
Chassis
ComponentFluid, Lubricant, or Genuine Part
Automatic Transmission We recommended you use TUTELA TRANSMISSION AS8 Fluid, or equivalent,
meeting requirement 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 We recommend you use TUTELA TRANSMISSION FORCE 4 Fluid, or equivalent,
meeting requirement of FCA Material Standard 9.55550-AV4 or MS.9602.
Axle Differential (Front Axles) We recommend you use Mopar Gear & Axle Lubricant (SAE 75W85)(API GL-5)
or equivalent.
Axle Differential (Rear M200 Sales Code DRZ) We recommend you use TUTELA TRANSMISSION X-ROAD, or equivalent,
meeting the requirement of FCA Material Standard 9.55550-DA7 or MS.8985
(SAE 75W-140, API GL-5).
Axle Differential (Rear M220 Sales Codes DRE/DRF) We recommend you use Mopar Gear & Axle Lubricant (SAE 75W85)(API GL-5) or equivalent. Models equipped with Trac-Lok Limited Slip Differential require a
friction modifier additive.
Brake Master Cylinder We recommend you use Mopar DOT 3 Brake Fluid, SAE J1703. If DOT 3 brake
fluid is not available then TUTELA TOP4/S, FMVSS no. 116 DOT4, ISO 4925
SAE J1704, or equivalent, is acceptable.
If using DOT 4 brake fluid, the fluid must be changed every 24 months
regardless of mileage.
Power Steering Reservoir We recommend you use TUTELA GI/R, or equivalent, meeting requirement of
FCA Material Standard 9.55550-AG3 or MS.90030.
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279
Pitch & Roll
The Pitch & Roll page displays the vehicle’s
current pitch (angle up and down) and roll
(angle side to side) in degrees. The pitch and
roll gauges provide a visualization of the
current vehicle angle.Pitch & Roll Menu 2WD/4WD
Accessory Gauge
The Accessory Gauge page displays the
current status of the vehicle’s Coolant
Temperature, Oil Temperature, Oil Pressure
(Gas Vehicles Only), Transmission Tempera -
ture, and Battery Voltage.
Accessory Gauges Menu 2WD/4WD
STEERING WHEEL AUDIO
CONTROLS
The remote sound system controls are
located on the rear surface of the steering
wheel. Reach behind the wheel to access the
switches.Audio Controls (Back View Of Steering Wheel)
The right-hand control is a rocker-type
switch with a push-button in the center and
controls the volume and mode of the sound
system. Pushing the top of the rocker switch
increases the volume, and pushing the
bottom of the rocker switch decreases the
volume.
Pushing the center button mutes the radio.
1 — Current Pitch
2 — Current Roll
1 — Coolant Temperature
2 — Oil Temperature
3 — Oil Pressure (Gas Vehicles Only)
4 — Battery Voltage
5 — Transmission Temperature (Automatic
Transmissions Only)
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319
INDEX
A
Accessories ....................................... 258Mopar ........................................... 258
Active Speed Limiter .......................... 156
Adaptive Cruise Control (ACC)
(Cruise Control) ................................. 158
Adding Fuel ...................................... 169
Additives, Fuel .................................. 249
Air Bag Air Bag Operation ........................... 107Air Bag Warning Light ..................... 105
Disable, Passenger Air Bag.............. 107

Enhanced Accident Response ... 115 , 209

Event Data Recorder (EDR) ............. 209
Front Air Bag ................................. 106
If Deployment Occurs ..................... 114
Knee Impact Bolsters ..................... 112
Maintaining Your Air Bag System ..... 116
Maintenance .................................. 116
Redundant Air Bag Warning Light .... 105
Transporting Pets ........................... 134
Air Bag Light ........................65 , 105 , 136
Air Conditioning................................... 44
Air Conditioning Filter .......................... 46
Air Conditioning System ....................... 44
Air Conditioning, Operating Tips ............ 45 Air Pressure
Tires ............................................. 233
Alarm Arm The System .............................. 15
Disarm The System .......................... 15
Security Alarm ............................15 , 68
Alarm (Security Alarm) ......................... 16
Alterations/Modifications Vehicle ............................................. 2
Android Auto...................... 266 , 271 , 302
Apps ............................................. 274
Communication ............................. 273
Maps ............................................ 272
Music ........................................... 273
Antifreeze (Engine Coolant) ................ 253
Anti-Lock Brake System (ABS) .............. 78
Anti-Lock Warning Light ....................... 68
Apple CarPlay .................... 267 , 274 , 303
Apps ............................................. 276
Maps ............................................ 276
Messages ...................................... 275
Music ........................................... 275
Phone ........................................... 275
Assist, Hill Start .................................. 85
Audio Systems (Radio) ................260 , 262
Auto Down Power Windows ................... 46
Automatic Headlights .......................... 33 Automatic High Beams .........................33
Automatic Temperature Control (ATC) ....44
Automatic Transmission......................145
Fluid Level Check ................... 231 , 232
Fluid Type ............................. 231 , 257
Special Additives ............................231

Auxiliary Electrical Outlet (Power Outlet)... 56

Auxiliary Power Outlet ..........................56
Auxiliary Switches ................................58
Axle Fluid..........................................257
Axle Lock ..........................................151
B
Battery ........................................ 66 , 225
Charging System Light ......................66
Belts, Seat ........................................136
Blind Spot Monitoring ..........................87
Brake Assist System .............................79
Brake Control System ...........................79
Brake Fluid ............................... 230 , 257
Brake System ....................................230 Fluid Check ...................................230
Master Cylinder ..............................230
Warning Light...................................65
Brake/Transmission Interlock...............144
Bulb Replacement ..................... 179 , 181
Bulbs, Light .............................. 137 , 179
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324
INDEX
Recreational Towing ........................... 176Shifting Into Transfer CaseNeutral (N)................................. 177
Shifting Out Of Transfer Case Neutral (N)................................. 178
Release, Hood ..................................... 55
Reminder, Seat Belt............................. 99
Remote Control Starting System ............................... 14
Remote Keyless Entry Arm The Alarm................................. 15
Disarm The Alarm ............................ 15
Remote Sound System (Radio)
Control ............................................. 279
Remote Starting System ....................... 14
Removable Doors ........................... 21 , 23
Front............................................... 21
Rear................................................ 23
Removable Top .........................47 , 51 , 53
Removal ............................................. 51
Removing............................................ 53
Replacement Bulbs ............................ 179
Replacement Keys ............................... 12
Replacement Tires ............................. 236
Restraints, Head .................................. 28
Roll Over Warning .................................. 2
Roof Type Carrier ................................. 58
Rotation, Tires ................................... 241 S
Safety Checks Inside Vehicle .............. 136
Safety Checks Outside Vehicle ............ 137
Safety Tips ....................................... 135
Safety, Exhaust Gas ........................... 135
Schedule, Maintenance...............210
, 216
Seat Belt Reminder ............................. 67
Seat Belts ....................................98 , 136
Adjustable Shoulder Belt ................ 103
Adjustable Upper Shoulder Anchorage ................................. 103
Adjustable Upper Shoulder Belt Anchorage ................................. 103
Energy Management Feature ........... 104
Front Seat ........................ 98 , 100 , 102
Inspection ..................................... 136
Lap/Shoulder Belt Operation ........... 102
Lap/Shoulder Belt Untwisting .......... 103
Lap/Shoulder Belts......................... 100
Operating Instructions .................... 102 Pregnant Women ........................... 104
Pretensioners................................. 104
Rear Seat ...................................... 100
Reminder ........................................ 99
Seat Belt Pretensioner .................... 104Seat Belt Reminder ......... 67 , 74 , 75 , 99
Untwisting Procedure ..................... 103
Seat Belts Maintenance ..................... 245 Seats ..................................................24
Adjustment ......................................24
Fold And Tumble Rear ......................27
Rear Folding ....................................24
Tilting .............................................24
Security Alarm ............................... 15 , 68
Arm The System ...............................15
Disarm The System ...........................15
Selection Of Coolant (Antifreeze) .........254
Sentry Key Replacement .......................12
Service Assistance .............................304
Shifting .............................................143 Automatic Transmission .......... 143 , 145
Transfer Case, Shifting Into Transfer Case Neutral (N).............177
Transfer Case, Shifting Out Of Transfer Case Neutral (N).............178
Shoulder Belts ...................................100
Signals, Turn ................74 , 137 , 181 , 182
Siri ...................................................300
Snow Chains (Tire Chains) ..................240
Snow Tires ........................................237
Soft Top ........................................ 47 , 53
Spare Tires ........................ 193 , 237 , 238
Spark Plugs .......................................254
Specifications Fuel (Gasoline) ...............................254
Oil ................................................254
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326
INDEX
Transmission ..................................... 145Automatic.............................. 145 , 231
Fluid ............................................. 257
Maintenance .................................. 231
Shifting ......................................... 143
Transporting Pets............................... 134
Tread Wear Indicators ........................ 235
Turn Signals .........................74 , 181 , 182
U
UCI Connector ................................... 280
Uconnect Uconnect Settings .......................... 277
Uconnect 3 With 5-Inch Display.......... 261
Uconnect 4 With 7-Inch Display.......... 263
Uconnect 4 With 8.4-Inch Display....... 268
Uconnect Phone ................................ 285 Making A Call ................................ 292
Pairing .......................................... 287 Uconnect Settings
Customer Programmable Features ...............................18 , 277
Passive Entry Programming ............... 18
Universal Consumer Interface (UCI)
Connector ......................................... 280
Untwisting Procedure, Seat Belt ......... 103
V
Vehicle Identification Number (VIN) .... 247
Vehicle Loading................................. 174
Vehicle Modifications/Alterations ............ 2
Vehicle Storage ............................45 , 241
Voice Command ................. 291 , 292 , 294
Voice Recognition
System (VR) ....................... 291 , 292 , 294 W
Warning Lights (Instrument Cluster
Descriptions) .......................................69
Warnings And Cautions ...........................2
Warnings, Roll Over ................................2
Washers, Windshield ..........................224
Washing Vehicle.................................243
Wheel And Wheel Tire Care .................239
Wheel And Wheel Tire Trim .................239
Wind Buffeting ....................................47
Window Fogging ...................................45
Windows .............................................46
Power ..............................................46
Windshield Defroster ..........................136
Windshield Washers ..................... 35 , 224
Fluid .............................................224
Windshield Wiper Blades ....................226
Windshield Wipers ...............................35
Wipers Blade Replacement .................226
Wipers, Rear ........................................36
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