Jeep Wrangler: Cooling System / Cooling System Notes

NOTE:

When the vehicle is stopped after a few miles/ kilometers of operation, you may observe vapor coming from the front of the engine compartment. This is normally a result of moisture from rain, snow, or high humidity accumulating on the radiator and being vaporized when the thermostat opens, allowing hot engine coolant (antifreeze) to enter the radiator.

If an examination of your engine compartment shows no evidence of radiator or hose leaks, the vehicle may be safely driven. The vapor will soon dissipate.

  • Do not overfill the coolant expansion bottle.
  • Check the coolant freeze point in the radiator and in the coolant expansion bottle. If engine coolant needs to be added, the contents of the coolant expansion bottle must also be protected against freezing.
  • If frequent engine coolant additions are required, the cooling system should be pressure tested for leaks.
  • Maintain engine coolant concentration at a minimum of 50% OAT coolant (conforming to MS.90032) and distilled water for proper corrosion protection of your engine which contains aluminum components.
  • Make sure that the coolant expansion bottle overflow hoses are not kinked or obstructed.
  • Keep the front of the radiator clean. If your vehicle is equipped with air conditioning, keep the front of the condenser clean.
  • Do not change the thermostat for Summer or Winter operation. If replacement is ever necessary, install ONLY the correct type thermostat. Other designs may result in unsatisfactory engine cooling performance, poor gas mileage, and increased emissions.

    Engine Coolant Level — 2.0L

    WARNING! Do not open hot engine cooling system. Never add engine coolant (antifreeze) when the engine is overheated. Do not loosen or remove the cap to cool an overheated engine...

    Brake System

    In order to ensure brake system performance, all brake system components should be inspected periodically. For the proper maintenance intervals. WARNING! Riding the brakes can lead to brake failure and possibly a collision...

    Other information:

    Jeep Wrangler 2018-2024 Owners Manual: IGNITION SWITCH


    KEYLESS ENTER-N-GO IGNITION If applicable, refer to the “Hybrid Supplement” for additional information. This feature allows the driver to operate the ignition switch with the push of a button as long as the key fob is in the passenger compartment...

    Jeep Wrangler 2018-2024 Owners Manual: To Disarm The System


    The Vehicle Security system can be disarmed using any of the following methods: Push the unlock button on the key fob. Grab the Passive Entry door handle (if equipped). Cycle the vehicle ignition system out of the OFF position. NOTE: The driver's door key cylinder cannot arm or disarm the Vehicle Security system...

    Categories

    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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