JEEP WRANGLER 2017 JK / 3.G Owners Manual

SERVICING AND MAINTENANCE
CONTENTS
SCHEDULED SERVICING .................371
▫ Maintenance Plan ...................... .372
▫ Heavy Duty Use Of The Vehicle ............376
 ENGINE COMPARTMENT .................377
▫ Engine Compartment — 3.6L ..............377
▫ Checking Oil Level .....................378
▫ Adding Washer Fluid ...................378
▫ Maintenance-Free Battery .................378
 DEALER SERVICE ...................... .379
▫ Engine Oil .......................... .380
▫ Engine Oil Filter ...................... .381
▫ Engine Air Cleaner Filter .................381
▫ Accessory Drive Belt Inspection ............384
▫ Air Conditioner Maintenance ..............385▫
Body Lubrication ..................... .389
▫ Windshield Wiper Blades .................389
▫ Exhaust System ....................... .394
▫ Cooling System ....................... .395
▫ Brake System ........................ .400
▫ Front/Rear Axle Fluid ...................401
▫ Transfer Case ........................ .402
▫ Automatic Transmission ..................402
▫ Manual Transmission — If Equipped ........405
 RAISING THE VEHICLE ..................405
 TIRES ............................... .405
▫ Tire Safety Information ..................405
▫ T

ires — General Information ..............413
▫ Tire Types ........................... .419
8

▫Spare Tires — If Equipped ................420
▫ Wheel And Wheel Trim Care ..............422
▫ Tire Chains (Traction Devices) .............423
▫ Tire Rotation Recommendations ............424
 DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES ..........425
▫ Treadwear ........................... .425
▫ Traction Grades ....................... .426
▫ Temperature Grades .....................426
 STORING THE VEHICLE ..................426 
BODYWORK .......................... .427
▫ Protection From Atmospheric Agents ........427
▫ Body And Underbody Maintenance ..........428
▫ Preserving The Bodywork .................428
 INTERIORS ........................... .432
▫ Seats And Fabric Parts ...................432
▫ Plastic And Coated Parts ..................432
▫ Leather Parts ......................... .433
▫ Glass Surfaces ........................ .433
370 SERVICING AND MAINTENANCE

SCHEDULED SERVICING
Your vehicle is equipped with an automatic oil change
indicator system. The oil change indicator system will
remind you that it is time to take your vehicle in for
scheduled maintenance.
Based on engine operation conditions, the oil change
indicator message will illuminate. This means that service
is required for your vehicle. Operating conditions such as
frequent short-trips, trailer tow, extremely hot or cold
ambient temperatures will influence when the “Change
Oil” or “Oil Change Required” message is displayed.
Severe Operating Conditions can cause the change oil
message to illuminate as early as 3,500 miles (5,600 km)
since last reset. Have your vehicle serviced as soon as
possible, within the next 500 miles (805 km).
On vehicles equipped with instrument cluster display, “Oil
Change Required” will be displayed and a single chime
will sound, indicating that an oil change is necessary.
On non-instrument cluster display equipped vehicles,
“Change Oil” will flash in the instrument cluster odometer
and a single chime will sound, indicating that an oil change
is necessary.Your authorized dealer will reset the oil change indicator
message after completing the scheduled oil change. If a
scheduled oil change is performed by someone other than
your authorized dealer, the message can be reset by
referring to the steps described under “Warning And
Indicator Lights” or “Instrument Cluster Display” in “Get-
ting To Know Your Instrument Panel” for further informa-
tion.
NOTE:
Under no circumstances should oil change inter-
vals exceed 10,000 miles (16,000 km), twelve months or 350
hours of engine run time, whichever comes first. The 350
hours of engine run or idle time is generally only a concern
for fleet customers.
Severe Duty All Models
Change Engine Oil at 4,000 miles (6,500 km) if the vehicle
is operated in a dusty and off road environment or is
operated predominately at idle or only very low engine
RPM’s. This type of vehicle use is considered Severe Duty.
8
SERVICING AND MAINTENANCE 371

Once A Month Or Before A Long Trip:
•Check engine oil level
• Check windshield washer fluid level
• Check the tire inflation pressures and look for unusual
wear or damage
• Check the fluid levels of the coolant reservoir, brake
master cylinder, power steering and automatic transmis-
sion, and fill as needed
• Check function of all interior and exterior lights
Maintenance Plan
Required Maintenance Intervals
Refer to the maintenance plan on the following pages for
the required maintenance intervals.
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Change oil and filter
• Rotate the tires
Rotate at the first sign of irregular wear, even if it
occurs before the oil indicator system turns on
• Inspect battery and clean and tighten terminals as
required
• Inspect automatic transmission fluid if equipped
with dipstick
• Inspect brake pads, shoes, rotors, drums, hoses and
park brake
• Inspect engine cooling system protection and hoses
• Inspect exhaust system
• Inspect engine air cleaner if using in dusty or
off-road conditions
• Inspect all door latches for presence of grease,
reapply if necessary.
372 SERVICING AND MAINTENANCE

Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Additional Inspections
Inspect the CV/Universal joints. X XX X X XX
Inspect front suspension, tie rod
ends, and replace if necessary. XXX X X X X
Inspect the front and rear axle
fluid. XX X X
Inspect the brake linings, replace
as necessary XXX X X X X
Adjust parking brake on vehicles
equipped with four wheel disc
brakes. XXX X X X X
Inspect transfer case fluid. XX X
Additional Maintenance
Replace engine air cleaner filter. XX X X X
Replace air conditioning/cabin air
filter. XXX X X X X
Replace spark plugs ** X
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SERVICING AND MAINTENANCE 373

Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Flush and replace the engine cool-
ant at 10 years or 150,000 miles
(240,000 km) whichever comes
first. XX
Change automatic transmission
fluid and filter if using your vehicle
for any of the following: police,
taxi, fleet, or frequent trailer tow-
ing. XX
Change the automatic transmis-
sion fluid and filter. X
Change the manual transmission
fluid if using your vehicle for any of
the following: trailer towing, snow
plowing, heavy loading, taxi, po-
lice, delivery service (commercial
service), off-road, desert operation
or more than 50% of your driving
is at sustained high speeds during
hot weather, above 90°F (32°C). XX X X X
374 SERVICING AND MAINTENANCE

Mileage or time passed
(whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Change transfer case fluid if using
your vehicle for any of the follow-
ing: police, taxi, fleet, or frequent
trailer towing. XX
Inspect and replace PCV valve if
necessary. X
Change front and rear axle fluid if
using your vehicle for police, taxi,
fleet, off-road or frequent trailer
towing. XX X
** The spark plug change interval is mileage based only,
yearly intervals do not apply.
8
SERVICING AND MAINTENANCE 375

WARNING!
•You can be badly injured working on or around a
motor vehicle. Do only service work for which you
have the knowledge and the right equipment. If you
have any doubt about your ability to perform a
service job, take your vehicle to a competent me-
chanic.
• Failure to properly inspect and maintain your vehicle
could result in a component malfunction and effect
vehicle handling and performance. This could cause
an accident.
Heavy Duty Use Of The Vehicle
Change Engine Oil at 4,000 miles (6,500 km) if the vehicle
is operated in a dusty and off road environment or is
operated predominately at idle or only very low engine
RPM’s. This type of vehicle use is considered Severe Duty.
376 SERVICING AND MAINTENANCE

ENGINE COMPARTMENT
Engine Compartment — 3.6L
1 — Integrated Power Module (Fuses)7 — Washer Fluid Reservoir
2 — Battery 8 — 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
8
SERVICING AND MAINTENANCE 377

Checking Oil Level
To ensure proper lubrication of your vehicle’s engine, the
engine oil must be maintained at the correct level. The
engine oil level should be checked five minutes after a
warmed up engine has been shut off.
Checking the oil while the vehicle is on level ground will
improve the accuracy of the oil level readings. Always
maintain the oil level within the SAFE zone on the dipstick.
Adding 1 quart (0.95 liters) of oil when the reading is at the
bottom of the SAFE zone will result in a reading at the top
of the safe zone on these engines.
CAUTION!
Overfilling or underfilling the crankcase will cause
aeration or loss of oil pressure. This could damage your
engine.
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 radiator antifreeze). When refillingthe 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 solution or mixture that meets or
exceeds the temperature range of your climate. This rating
information can be found on most washer fluid containers.
WARNING!
Commercial windshield washer solvents are flam-
mable. They could ignite and burn you. Care must be
exercised when filling or working around the washer
solution.
Maintenance-Free Battery
Your vehicle is equipped with a maintenance-free battery.
You will never have to add water, nor is periodic mainte-
nance required.
378 SERVICING AND MAINTENANCE