Jeep Wrangler: STARTING THE ENGINE — DIESEL ENGINE (IF EQUIPPED) / Extreme Cold Weather

The engine block heater is a resistance heater installed in the water jacket of the engine. It requires a 110–115 Volt AC electrical outlet with a grounded, three-wire extension cord. Its use is recommended for environments that routinely fall below -10°F (-23°C). It should be used when the vehicle has not been running overnight or longer periods and should be plugged in two hours prior to start. Its use is required for cold starts with temperatures under -20°F (-28°C).

NOTE:

The engine block heater cord is a factory installed option. If your vehicle is not equipped, heater cords are available from an authorized Mopar® dealer.

  • A 12 Volt heater built into the fuel filter housing aids in preventing fuel gelling. It is controlled by a built-in thermostat.
  • A Diesel Pre-Heat system both improves engine starting and reduces the amount of white smoke generated by a warming engine.

    Automatic Transmission

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    Normal Starting

    Observe the instrument cluster lights when starting the engine. NOTE: Normal starting of either a cold or a warm engine is obtained without pumping or pressing the accelerator pedal...

    Other information:

    Jeep Wrangler 2018-2025 Owners Manual: Activation


    To unlock the full potential of SiriusXM Guardian™ in your vehicle, you must activate your SiriusXM Guardian™ services. Press the Apps icon on the bottom of your in-vehicle touchscreen. Select the Activate Services icon from your list of apps...

    Jeep Wrangler 2018-2025 Owners Manual: Four-Position Transfer Case — If Equipped


    Four-Wheel Drive Gear Selector The transfer case provides four mode positions: 2H (2WD High) — Two-Wheel Drive High Range 4H (4WD High) —Four-Wheel Drive High Range N (Neutral) 4L (4WD Low) — Four-Wheel Drive Low Range For additional information on the appropriate use of each transfer case mode position, see the information below: 2WD High Two-Wheel Drive High Range — This range is for normal street and highway driving on dry, hard surfaced roads...

    Categories

    Bi-Level Mode

    Jeep Wrangler. Bi-Level Mode Air comes from the instrument panel outlets and floor outlets. A slight amount of air is directed through the defrost and side window demister outlets.

    NOTE:

    Bi-Level mode is designed under comfort conditions to provide cooler air out of the panel outlets and warmer air from the floor outlets.

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