brake fluid JEEP WRANGLER 2020 Owner handbook (in English)

ENGINE COMPARTMENT3.6L Engine
1 — Integrated Power Module (Fuses) 7 — Washer Fluid Reservoir
2 — Battery8 — Engine Coolant Reservoir
3 — Engine Oil Dipstick 9 — Air Cleaner Filter
4 — Automatic Transmission Dipstick (Under Engine Cover) 10 — Coolant Pressure Cap
5 — Engine Oil Fill 11 — Power Steering Fluid Reservoir
6 — Brake Fluid Reservoir
SERVICING AND MAINTENANCE
180

2.8L Diesel Engine
1 — Integrated Power Module (Fuses) 6 — Washer Fluid Reservoir
2 — Battery 7 — Engine Oil Dipstick
3 — Engine Oil Fill 8 — Air Cleaner Filter
4 — Engine Coolant Reservoir 9 — Power Steering Fluid Reservoir
5 — Brake Fluid Reservoir
181

by gently spraying water from a garden hose
vertically down the face of the A/C condenser
(if equipped) or the back of the radiator core.
Check the engine cooling system hoses for
brittle rubber, cracking, tears, cuts, and
tightness of the connection at the coolant
recovery bottle and radiator. Inspect the en-
tire system for leaks. DO NOT REMOVE THE
COOLANT PRESSURE CAP WHEN THE
COOLING SYSTEM IS HOT.
Adding Washer Fluid
The fluid reservoir for the windshield washers
and the rear window washer (if equipped) is
shared. The fluid reservoir is located in the
engine compartment. Be sure to check the
fluid level at regular intervals. Fill the reservoir
with windshield washer solvent only (not radia-
tor antifreeze). When refilling the washer fluid
reservoir, take some washer fluid and apply it to
a cloth or towel and wipe clean the wiper
blades; this will help blade performance.
To prevent freeze-up of your windshield
washer system in cold weather, select a solu-
tion or mixture that meets or exceeds the
temperature range of your climate. This rat-
ing information can be found on most washer
fluid containers.
WARNING!
Commercial windshield washer solvents
are flammable. They could ignite and burn
you. Care must be exercised when filling or
working around the washer solution.
Brake System
In order to assure brake system performance,
all brake system components should be in-
spected periodically. Refer to the “Mainte-
nance Plan” in this section for the proper
maintenance intervals.
WARNING!
Riding the brakes can lead to brake failure
and possibly a collision. Driving with your
foot resting or riding on the brake pedal
WARNING!
can result in abnormally high brake tem-
peratures, excessive lining wear, and pos-
sible brake damage. You would not have
your full braking capacity in an emergency.
Fluid Level Check — Brake Master Cylinder
The fluid level of the master cylinder should
be checked whenever the vehicle is serviced,
or immediately if the brake system warning
light is on. If necessary, add fluid to bring
level within the designated marks on the side
of the reservoir of the brake master cylinder.
Be sure to clean the top of the master cylin-
der area before removing cap. With disc
brakes, fluid level can be expected to fall as
the brake pads wear. Brake fluid level should
be checked when pads are replaced. If the
brake fluid is abnormally low, check the sys-
tem for leaks.
Refer to “Fluids And Lubricants” in “Techni-
cal Specifications” for further information.
183

WARNING!
• Use only manufacturer's recommended
brake fluid. Refer to “Fluids And Lubri-
cants” in “Technical Specifications” for
further information. Using the wrong
type of brake fluid can severely damage
your brake system and/or impair its per-
formance. The proper type of brake fluid
for your vehicle is also identified on the
original factory installed hydraulic mas-
ter cylinder reservoir.
• 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 cylin-
der 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
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
WARNING!
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.
Manual Transmission
Fluid Level Check
Check the fluid level by removing the fill
plug. The fluid level should be between the
bottom of the fill hole and a point not more
than 3/16 of an inch (4.76 mm) below the
bottom of the hole.
Add fluid, if necessary, to maintain the
proper level.
Automatic Transmission
Fluid Level Check — Gasoline Engine
It is best to check the fluid level when the
transmission is at normal operating tempera-
ture (approximately 180°F/82°C). This oc-
curs after at least 15 miles (25 km) of driv-
ing. At normal operating temperature, the
fluid cannot be held comfortably between the
fingertips.
Use the following procedure to check the
transmission fluid level properly:
1. Park the vehicle on level ground.
2. Remove the engine cover by pulling it up
off the mounting studs (two in the front
and two in the rear).
3. Run the engine at normal idle speed for at
least 60 seconds, and leave the engine
running for the rest of this procedure.
4. Fully apply the parking brake, and press
the brake pedal.
SERVICING AND MAINTENANCE
184

5. Place the gear selector momentarily into
each gear position (allowing time for the
transmission to fully engage in each posi-
tion), ending with the transmission in
PARK.
6. Remove the dipstick, wipe it clean and
reinsert it until seated.
7. Remove the dipstick again and note the
fluid level on both sides. The fluid level
reading is only valid if there is a solid
coating of oil on both sides of the dipstick.
Note that the holes in the dipstick will be
full of fluid if the actual level is at or above
the hole. The fluid level should be be-
tween the HOT (upper) reference holes on
the dipstick at normal operating tempera-
ture. If the fluid level is low, add fluid
through the dipstick tube to bring it to the
proper level.Do not overfill.Use ONLY the
specified fluid (refer to "Fluids And Lubri-
cants" under “Technical Specifications”
for fluid specifications). After adding any
quantity of oil through the dipstick tube,
wait a minimum of two minutes for the oil
to fully drain into the transmission before
rechecking the fluid level.NOTE:
• The holes in the dipstick will be full of
fluid if the actual level is at or above the
hole.
• If it is necessary to check the transmis-
sion below the operating temperature,
the fluid level should be between the
two COLD (lower) holes on the dipstick
with the fluid at approximately 80°F
(27°C). If the fluid level is correctly
established at 80° F (27°C), it should
be between the HOT (upper) reference
holes when the transmission reaches
180° F (82°C). Remember it is best to
check the level at the normal operating
temperature.
CAUTION!
If the fluid temperature is below 50°F
(10°C) it may not register on the dipstick.
Do not add fluid until the temperature is
elevated enough to produce an accurate
reading. Run the engine at idle, in PARK,
to warm the fluid.8. Reinstall the engine cover and snap it
down securely onto the four mounting
studs.
9. Check for leaks. Release the parking
brake.
NOTE:
To prevent dirt and water from entering the
transmission after checking or replenishing
fluid, make sure that the dipstick cap is
properly reseated. It is normal for the dipstick
cap to spring back slightly from its fully
seated position, as long as its seal remains
engaged in the dipstick tube.
Fluid Level Check — 2.8L Turbo Diesel
Engine
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 filler tube is capped and no dipstick
is provided. An authorized dealer can check
your transmission fluid level using a special
service dipstick.
185

Component Fluid, Lubricant, or Genuine Part
Brake Master Cylinder We recommend you use Mopar DOT 3 Brake Fluid, SAE J1703. If DOT 3,
SAE J1703 brake fluid is not available, then DOT 4 is acceptable.
If using DOT 4 brake fluid, the fluid must be changed every 24 months
regardless of millage.
Power Steering Reservoir We recommend you use Mopar Power Steering Fluid +4, Mopar ATF+4 Au-
tomatic Transmission Fluid.
MOPAR ACCESSORIES
Authentic Accessories And Jeep
Performance Parts By Mopar
• Mopar Accessories and Jeep performance
parts are developed with the same engi-
neering that went into your Wrangler.
Choose these products with confidenceknowing that they have passed the same
rigid standards for function, fit, durability
and performance as your Wrangler.
• For the full line of Authentic Jeep Accesso-
ries by Mopar, visit your local dealership or
online at mopar.com for U.S. residents and
mopar.ca for Canadian residents.NOTE:
All parts are subject to availability.
Chrome:
• Grille • Tubular Side Steps • Tubular Bumpers
• Exhaust Tip • Fuel Door • Tail Lamp Guards
Off Road & Performance:
• Bumpers • Rock Rails • Skid Plates
• Winches • Lift Kits • Lights
• Performance Axles • LED Lights • Tow Hooks
TECHNICAL SPECIFICATIONS
212

Accessories..................212
Mopar...................212
Adding Fuel.................139
AirBag .....................93
Advance Front Air Bag.........93
Air Bag Operation.............94
Air Bag Warning Light..........92
Enhanced Accident Response . .98, 168
Event Data Recorder (EDR)......168
Front Air Bag...............93
If A Deployment Occurs.........97
Knee Impact Bolsters..........95
Maintaining Your Air Bag System . . .98
Transporting Pets............112
Air Bag Light............58, 92, 113
Air Bag Maintenance.............98
Air Conditioner Maintenance.......186
Air Conditioning Filter.........38, 187
Air Conditioning, Operating Tips......37
Air Conditioning Refrigerant. . . .186, 187
Air Conditioning System.......37, 186
Air Pressure, Tires..............193
Alarm (Security Alarm).........18, 61
Alterations/Modifications, Vehicle......4
Antifreeze (Engine Coolant)........210Anti-Lock Brake System (ABS).......68
Anti-Lock Warning Light...........61
Arming System (Security Alarm)......18
Assist, Hill Start................70
Audio Jack...............219, 226
Audio Settings................218
Automatic Headlights............29
Automatic Oil Change Indicator......58
Automatic Temperature Control (ATC) . . .37
Automatic Transmission..........127
Fluid Level Check...........184
Fluid Type................211
Autostick...................128
Axle Fluid...................211
Axle Lock...................132
Battery..................60, 186
Charging System Light.........60
Belts, Seat
.................
.113
Brake Assist System.............69
Brake Control System, Electronic.....69
Brake Fluid..............183, 211
Brake System................183
Fluid Check...............183
Master Cylinder.............183Parking..................121
Brake/Transmission Interlock.......127
Bulb Replacement..........146, 147
Bulbs, Light.................114
Capacities, Fluid..............210
Caps, Filler
Fuel....................139
Oil (Engine)...............180
Carbon Monoxide Warning.........112
Car Washes..................202
CD (Compact Disc) Player.........218
Center High Mounted Stop Light.....149
Chains, Tire..................200
Changing A Flat Tire.........154, 192
Checking Your Vehicle For Safety. . . .112
Checks, Safety................112
Child Restraints
How To Stow An Unused ALR Seat
Belt....................110
Cleaning
Wheels..................199
Climate Control................33
Manual...................33
Clock Setting.............218, 221
INDEX
259

Cold Weather Operation..........117
Compact Spare Tire.............198
Connector
UCI ....................233
Universal Consumer Interface
(UCI)...................233
Cooling System...............182
Coolant Capacity............210
Inspection................182
Selection Of Coolant (Antifreeze) . .210
Customer Assistance............242
Daytime Running Lights...........29
Dealer Service................189
Defroster, Windshield............113
Delay (Intermittent) Wipers.........31
Diagnostic System, Onboard........64
Diesel Engine Maintenance........175
Diesel Fuel..................209
Diesel Fuel Requirements.........209
Dimmer Switch, Headlight.........29
Dipsticks
Oil (Engine)...............182
Disabled Vehicle Towing..........165
Disarming, Security System.........18
Doors......................19Driver's Seat Back Tilt............21
Electronic Brake Control System......69
Anti-Lock Brake System........68
Electronic Roll Mitigation.......75
Traction Control System........71
Electronic Speed Control (Cruise
Control)..................136
Electronic Stability Control (ESC).....71
Electronic Throttle Control Warning
Light.....................60
Emergency Brake..............121
Emergency, In Case Of
Jacking..............154, 192
Jump Starting..............160
Engine.....................180
Break-In Recommendations.....121
Compartment...........180, 181
Compartment Identification . .180, 181
Cooling.................
.182
Exhaust Gas Caution..........112
Fails To Start...............118
Flooded, Starting............118
Fuel Requirements...........210
Jump Starting..............160
Oil .....................210
Oil Change Interval...........58Oil Filler Cap..............180
Oil Selection..............210
Overheating...............163
Starting.................117
Enhanced Accident Response
Feature................98, 168
Exhaust Gas Caution............112
Exhaust System...............112
Exterior Lights.............28, 114
Fabric Care..................203
Fabric Top..................203
Filters
Air Conditioning..........38, 187
Flashers
Hazard Warning.............146
Turn Signal......64, 114, 148, 149
Flash-To-Pass.................29
Flooded Engine Starting..........118
Fluid, Brake.................211
Fluid Capacities...............210
Fluid Leaks..................114
Fluid Level Checks
Brake...................183
Engine Oil................182
Manual Transmission.........184
Fluids And Lubricants...........210
INDEX
260

AirBag .............58, 92, 113
Automatic Headlights..........29
Back-Up.................149
Brake Assist Warning..........75
Bulb Replacement.......146, 147
Center Mounted Stop.........149
Cruise...................64
Daytime Running............29
Dimmer Switch, Headlight.......29
Exterior..................114
Fog .................29, 148
Hazard Warning Flasher........146
Headlight Leveling............30
Headlights.............28, 147
Headlight Switch.............28
High Beam................29
High Beam/Low Beam Select.....29
Hill Descent Control Indicator.....76
Instrument Cluster............28
Malfunction Indicator
(Check Engine)..............61
Passing..................29
Rear Fog.................148
Rear Servicing.............149
Rear Tail Lamps............149
Seat Belt Reminder...........60
Security Alarm..............61Service..............146, 147
Side Marker...............149
Tire Pressure Monitoring (TPMS) . . .62
Traction Control.............75
Turn Signal . . .29, 64, 114, 148, 149
Warning (Instrument Cluster
Description)................64
Locking Axle.................132
Lug Nuts...................208
Maintenance Free Battery.........186
Maintenance Schedule.......170, 175
Diesel..................175
Malfunction Indicator Light
(Check Engine)...............61
Manual Transmission........123, 184
Fluid Level Check...........184
Lubricant Selection..........211
Shift Speeds.............
.124
Media Center Radio.............220
Memory Feature (Memory Seat)......21
Memory Seat..................21
Memory Seats And Radio..........21
Mirrors.....................28
Heated...................28
Modifications/Alterations, Vehicle......4
Monitor, Tire Pressure System.......77Mopar.....................212
Mopar Accessories.............212
Navigation..................229
Navigation System (Uconnect GPS) . . .229
Navigation Voice Prompt Volume.....229
New Vehicle Break-In Period.......121
Occupant Restraints.............84
Octane Rating, Gasoline (Fuel)......209
Oil Change Indicator..........58, 176
Oil Change Indicator, Reset.....58, 176
Oil, Engine
Capacity.................210
Change Interval..............58
Dipstick.................182
Pressure Warning Light.........60
Recommendation...........210
Viscosity.................210
Oil Pressure Light...............60
Onboard Diagnostic System.........64
Operating Precautions............64
Operator Manual (Owner's Manual).....4
Outlet
Power...................52
Overheating, Engine............163
INDEX
262

Owner's Manual (Operator Manual).....4
Parking Brake................121
Pets......................112
Phone (Uconnect)..............234
Power
Outlet (Auxiliary Electrical Outlet) . .52
Windows..................38
Power Steering Fluid............211
Pregnant Women And Seat Belts......90
Preparation For Jacking..........154
Pretensioners
Seat Belts.................90
Radial Ply Tires...............194
Radio
Presets...............218, 223
Radio 130
Operating Instructions Radio
Mode...................217
Radio Operation...............218
Rear Seat, Folding..............21
Rear Swing Gate...............51
Rear Wiper/Washer..............32
Recreational Towing.............142
Shifting Into Transfer Case
Neutral (N)...............143Shifting Out Of Transfer Case Neutral (N)
.......................144
Refrigerant..................187
Release, Hood.................51
Reminder, Seat Belt.............85
Remote Control
Starting System.............14
Remote Sound System (Radio)
Controls..................232
Remote Starting System...........14
Replacement Bulbs.............146
Replacement Keys..............17
Replacement Tires.............196
Resetting Oil Change Indicator.......58
Restraint, Head................25
Roll Over Warning................4
Rotation, Tires................201
Safety Checks Inside Vehicle.......113
Safety Checks Outside Vehicle......114
Safety, Exhaust Gas.............112
Safety Tips..................112
Schedule, Maintenance
.......170, 175
Seat Belt
Adjustable Upper Shoulder Belt
Anchorage.................89
Automatic Locking Retractor (ALR) . .90Energy Management Feature......90
Lap/Shoulder Belt Operation......88
Lap/Shoulder Belts............86
Lap/Shoulder Belt Untwisting.....89
Pregnant Women.............90
Seat Belt Pretensioner.........90
Seat Belt Reminder............85
Seat Belt Maintenance...........204
Seat Belt Reminder..............85
Seat Belts................85, 113
Adjustable Shoulder Belt........89
Adjustable Upper Shoulder
Anchorage.................89
Front Seat............85, 86, 88
Inspection................113
Operating Instructions.........88
Pregnant Women.............90
Pretensioners...............90
Rear Seat.................86
Reminder.................60
Untwisting Procedure..........89
Seats......................21
Adjustment................21
Easy Entry..............21, 23
Fold And Tumble Rear.........24
Heated...................21
Memory..................21
263