check engine JEEP WRANGLER 2020 Owner handbook (in English)

After 25 miles (40 km), check the lug nut/
bolt torque to be sure that all the lug nuts/
bolts are properly seated against the wheel.
WARNING!
To avoid the risk of forcing the vehicle off
the jack, do not tighten the lug nuts fully
until the vehicle has been lowered. Failure
to follow this warning may result in per-
sonal injury.
FUEL REQUIREMENTS —
GASOLINE ENGINES
This engine is designed to meet all emissions
regulations and provide excellent fuel
economy and performance when using high
quality unleaded gasoline with a minimum
research octane rating (RON) of 91.
Light spark knock at low engine speeds is not
harmful to your engine. However, continued
heavy spark knock at high speeds can cause
damage, and immediate service is required.
Poor quality gasoline can cause problems
such as hard starting, stalling, and hesita-
tions. If you experience these symptoms, try
another brand of gasoline before considering
service for the vehicle.
Ethanol
The manufacturer recommends that your ve-
hicle be operated on fuel containing no more
than 15% ethanol. Purchasing your fuel from
a reputable supplier may reduce the risk of
exceeding this 15% limit and/or of receiving
fuel with abnormal properties. It should also
be noted that an increase in fuel consump-tion should be expected when using ethanol-
blended fuels, due to the lower energy con-
tent of ethanol. Problems that result from
using methanol/gasoline or E-85 ethanol
blends are not the responsibility of the
manufacturer.
CAUTION!
Use of fuel with Ethanol content higher
than 15% may result in engine malfunc-
tion, starting and operating difficulties,
and materials degradation. These adverse
effects could result in permanent damage
to your vehicle.
FUEL REQUIREMENTS —
DIESEL ENGINES
Use Premium Quality Diesel fuels with a
Cetane rating of 50 or higher, and meeting
the EN590 standard are highly recom-
mended. See your authorized dealer for fur-
ther information regarding fuels available in
your area.
Torque Patterns
209

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