Jeep Wrangler 2018-2026 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 2018-2026 Owners Manual: 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...

Jeep Wrangler 2018-2026 Owners Manual: JACKING AND TIRE CHANGING

WARNING! Do not attempt to change a tire on the side of the vehicle close to moving traffic. Pull far enough off the road to avoid the danger of being hit when operating the jack or changing the wheel. Being under a jacked-up vehicle is dangerous...

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.