Jeep Wrangler 2018-2025 Owners Manual / STARTING AND OPERATING / NORMAL OPERATION — DIESEL ENGINE / Cooling System Tips — Automatic Transmission
Jeep Wrangler: NORMAL OPERATION — DIESEL ENGINE / Cooling System Tips — Automatic Transmission
To reduce the potential for engine and transmission overheating in high ambient temperature conditions, take the following actions:
- City Driving — When stopped, shift the transmission into NEUTRAL (N) and increase engine idle speed.
- Highway Driving — Reduce your speed.
- Up Steep Hills — Select a lower transmission gear.
- Air Conditioning — Turn it off temporarily.
NOTE:
If the coolant temperature is too high, the A/C will automatically turn off.
Stopping The Engine
After full load operation, idle the engine for a
few minutes before shutting it down. This idle
period will allow the lubricating oil and coolant
to carry excess heat away from the
turbocharger...
Do Not Operate The Engine With Low Oil Pressure
If the low oil pressure warning light turns on
while driving, stop the vehicle and shut down
the engine as soon as possible. A chime will
sound when the light turns on...
Other information:
Jeep Wrangler 2018-2025 Owners Manual: Checking Oil Level
To ensure proper engine lubrication, the engine oil must be maintained at the correct level. Check the oil level at regular intervals, such as every fuel stop. The best time to check the engine oil level is about five minutes after a fully warmed up engine is shut off...
Jeep Wrangler 2018-2025 Owners Manual: Axle Lock (Tru-Lok) Front And Rear — If Equipped
The AXLE LOCK switch is located on the instrument panel (to the right of the steering column). Axle Lock Switch Panel This feature will only activate when the following conditions are met: Ignition in RUN position, vehicle in 4WD Low. Vehicle speed should be 10 mph (16 km/h) or less...
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Turn Signals. Lane Change Assist — If Equipped
Turn Signals
Move the multifunction lever up or down to activate the turn signals. The arrows on each side of the instrument cluster flash to show proper operation.
NOTE:
If either light remains on and does not flash, or there is a very fast flash rate, check for a defective outside light bulb.
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