maintenance JEEP WRANGLER 2023 Owner's Manual

SERVICING AND MAINTENANCE307
MAINTENANCE PLAN
Refer to the maintenance plan for the required maintenance intervals.
NOTE:Using white lithium grease, lubricate the door hinge joints twice a year to prevent premature wear.
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 the CV/Universal joints.
 Inspect brake pads, shoes, rotors, drums, hoses and parking brake.
 Inspect engine cooling system protection and hoses.
 Inspect exhaust system.
 Inspect engine air cleaner filter if using in dusty or off-road conditions; replace engine air cleaner filter if necessary.
 Inspect all door latches for presence of grease; reapply if necessary.
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308SERVICING 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 X X X X X X X X X X X X X
Inspect front suspension, tie rod ends, rear suspension,
and replace if necessary. X
XXXXXX
Inspect the front and rear axle fluid. XXXX
Inspect the brake linings, replace as necessary. XXXXXXX
Adjust parking brake on vehicles equipped with four
wheel disc brakes. X
XXXXXX
Inspect transfer case fluid. XXX
Additional Maintenance
Replace engine air cleaner filter. XXXXX
Replace cabin air filter. To be replaced every 12,000 miles (19,000 km).
Replace Spark Plugs – 2.0L Engine.
1X X
Replace spark plugs – 3.6L Engine.
1X
Flush and replace the engine, intercooler
(if equipped) coolant at 10 years or
150,000 miles (240,000 km) whichever comes first. X
X

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SERVICING AND MAINTENANCE309
Change the manual transmission fluid if using your
vehicle for any of the following: trailer towing, snow
plowing, heavy loading, taxi, police, 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). X
XXXX
Change transfer case fluid if using your vehicle for any of
the following: police, taxi, fleet, or frequent trailer towing. X
X
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. X
XX
1. The spark plug change interval is mileage based only; yearly intervals do not apply.
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
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 mechanic.
 Failure to properly inspect and maintain your vehicle could result in a component malfunction and affect vehicle handling and performance. This could cause an accident.
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310SERVICING AND MAINTENANCE
SCHEDULED SERVICING — DIESEL ENGINE
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 “Oil Change
Required” message is displayed. Have your vehicle
serviced as soon as possible, within the next 500 miles
(805 km).
An 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
an authorized dealer, to reset the message
Úpage 108.
NOTE:Under no circumstances should oil change intervals
exceed 10,000 miles (16,000 km) or 12 months,
whichever comes first.
Engine Oil Filter Replacement
Residual oil in the housing may spill from the housing
when the new filter is installed if the residual oil is not
either removed from the housing or enough time has not
elapsed to allow the oil to drain back into the engine.
When servicing the oil filter on this engine, open the filter
cap approximately six turns until the cap o-ring is visible
and stop. Wait five minutes with the cap in this position to
allow dirty engine oil to drain back into the engine. After
five minutes, the cap and filter assembly can be removed
and discarded. When installing the new oil filter cartridge
assembly, ensure the cap is tightened to the specified
torque to prevent low oil pressure conditions. Once A Month Or Before A Long Trip:

Check engine oil level
 Check windshield washer fluid level
 Check the tire pressures and look for unusual wear or
damage
 Check the fluid levels of the coolant reservoir, brake
master cylinder, and fill as needed
 Check function of all interior and exterior lights

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SERVICING AND MAINTENANCE311
MAINTENANCE PLAN — DIESEL FUEL UP TO B5 BIODIESEL
Refer to the maintenance plan for the required maintenance intervals.
At Every Oil Change Interval As Indicated By Oil Change Indicator System
Change oil and filter.
 Completely fill the Diesel Exhaust Fluid tank.
 Drain water from fuel filter assembly.
 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 the CV/Universal joints.
 Inspect brake pads, shoes, rotors, drums, hoses and parking brake.
 Inspect engine cooling system protection and hoses.
 Inspect exhaust system.
 Inspect engine air cleaner filter if using in dusty or off-road conditions; replace engine air cleaner filter if necessary.
At Every Second Oil Change Interval As Indicated By Oil Change Indicator System
Change fuel filter.8

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312SERVICING AND MAINTENANCE
Mileage Or Time Passed (Whichever Comes First)
10,000
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: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
16,000
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
Completely fill the Diesel Exhaust Fluid tank. X X X X X X X X X X X X X X X
Inspect the CV/Universal joints. X X X X X X X X X X X X X X X
Inspect front suspension, tie rod ends, and replace if necessary. XXXXXXX
Inspect the front and rear axle fluid, change if using your vehicle for
police, taxi, fleet, off-road or frequent trailer towing. X
XXXXXX
Inspect the brake linings, parking brake function. XXXXXXX
Inspect transfer case fluid. XXX X
Additional Maintenance
Drain water from fuel filter assembly. X X X X X X X X X X X X X X X
Replace fuel filters and drain water from the fuel filter assembly. Under normal conditions the diesel fuel filter should be replaced every other oil change and must not
exceed 20,000 miles (32,000 km) if using diesel fuel up to B5. If the vehicle is being used in severe operating conditions, or in certain geographical areas of the country (Pennsylvania, New York, Ohio, Maryland, West Virginia, Arkansas, Oklahoma, Kansas, Iowa, Missouri and Nebraska) due to fuel
cleanliness issues, it is recommended to replace the fuel filter every oil change and must not exceed 10,000 miles.
Replace engine air cleaner filter. XXXXX
Replace the cabin air filter. To be replaced every 12,000 miles (19,000 km).

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SERVICING AND MAINTENANCE313
ADDITIONAL MAINTENANCE — B6 TO B20 BIODIESEL
NOTE:
Under no circumstances should oil change intervals exceed 8,000 miles (12,875 km) or six months, whichever comes first when using biodiesel blends greater than 5% (B5).
 The owner is required to monitor mileage for B6-B20 biodiesel, the automatic oil change indicator system does not reflect the use of biofuels.
 Fuel filter change interval is maintained at every second oil change. This is especially important with biodiesel usage.
For more information on using biodiesel
Úpage 371.
Flush and replace the engine coolant at 10 years or 150,000 miles
(240,000 km) whichever comes first.
X
X
Replace accessory drive belt(s). X
Change transfer case fluid. X
Mileage Or Time Passed (Whichever Comes First)
10,000
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: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
16,000
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
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 mechanic.
 Failure to properly inspect and maintain your vehicle could result in a component malfunction and affect vehicle handling and performance. This could cause an accident.
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314SERVICING AND MAINTENANCE
ENGINE COMPARTMENT
2.0L GASOLINE ENGINE
1 — Battery 6 — Brake Fluid Reservoir Cap
2 — Power Distribution Center (Fuses) 7 — Washer Fluid Reservoir Cap
3 — Engine Oil Dipstick 8 — Engine Air Cleaner Filter
4 — Engine Oil Fill 9 — Power Steering Reservoir Cap
5 — Engine Coolant Pressure Cap 10 — Intercooler Coolant Reservoir Cap

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SERVICING AND MAINTENANCE315
3.6L GASOLINE ENGINE
1 — Power Distribution Center (Fuses) 7 — Power Pack Unit Pressure Cap — If Equipped
2 — Battery 8 — Washer Fluid Reservoir Cap
3 — Engine Oil Dipstick 9 — Engine Air Cleaner Filter
4 — Engine Oil Fill 10 — Power Steering Reservoir Cap
5 — Engine Coolant Pressure Cap 11 — Motor Generator Unit Coolant Pressure Cap— If Equipped
6 — Brake Fluid Reservoir Cap
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316SERVICING AND MAINTENANCE
3.0L DIESEL ENGINE
1 — Battery 6 — Power Distribution Center (Fuses)
2 — Engine Oil Fill 7 — Power Steering Reservoir Cap
3 — Engine Coolant Pressure Reservoir Cap 8 — Engine Oil Dipstick
4 — Brake Fluid Reservoir Cap 9 — Engine Air Cleaner Filter
5 — Washer Fluid Reservoir Cap

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