Jeep WRANGLER 2020 Owner's Manual page 317

Mileage or time passed
(whichever comes first):
Or Years:
Or Kilometers:
Replace Spark Plugs – 2.0L Engine
Replace spark plugs – 3.6L Engine
Flush and replace the engine,
intercooler (if equipped), battery
(if equipped), and Motor Generator Unit
(MGU) (if equipped) coolant at 10 years
or 150,000 miles (240,000 km)
whichever comes first
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)
2 3 4 5
1
2
X
6 7 8 9 10
X
X
X
X X
SERVICING AND MAINTENANCE
11 12 13 14
X
X
315
15
X
7
X