Jeep Wrangler 2018-2026 Owners Manual / STARTING AND OPERATING / NORMAL OPERATION — DIESEL ENGINE / Engine Idling

Jeep Wrangler: NORMAL OPERATION — DIESEL ENGINE / Engine Idling

Avoid prolonged idling, long periods of idling may be harmful to your engine because combustion chamber temperatures can drop so low that the fuel may not burn completely. Incomplete combustion allows carbon and varnish to form on piston rings, cylinder head valves, and injector nozzles. Also, the unburned fuel can enter the crankcase, diluting the oil and causing rapid wear to the engine.

Cold Weather Precautions

Operation in ambient temperature below 32°F (0°C) may require special considerations. The following charts suggest these options: Fuel Operating Range NOTE: Use “Ultra Low Sulfur Diesel Fuels (ULSD)” ONLY...

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...

Other information:

Jeep Wrangler 2018-2026 Owners Manual: Cargo Carpet (Four Door Models) With Gap Hider

Remove the grommets under the rear seat (one left and one right). Pull the carpet out to the front and open the carpet split around the seat belt attachment and under the center seat bracket. Under Rear Seat Carpet Split Grommets Rear Carpet When reinstalling carpet please perform these steps in reverse order making sure that the carpet is tucked under the scuffs, B-pillar, console, and refasten grommets...

Jeep Wrangler 2018-2026 Owners Manual: Fuel Filter Replacement — Diesel Engine

NOTE: Using a fuel filter that does not meet the manufacturer’s filtration and water separating requirements can severely impact fuel system life and reliability. We recommend you use Mopar® Fuel Filter. Must meet 3 micron rating. CAUTION! Diesel fuel will damage blacktop paving surfaces...

Manual Front Seat Forward/Rearward Adjustment

The seat can be adjusted forward or rearward by using a bar located by the front of the seat cushion, near the floor. While sitting in the seat, lift up on the bar located under the seat cushion and move the seat forward or rearward. Release the bar once you have reached the desired position. Then, using body pressure, move forward and rearward on the seat to be sure that the seat adjusters have latched.

Jeep Wrangler. Manual Front Seat Forward/Rearward Adjustment

Adjustment Bar Location