2022 Jeep Wagoneer Owners Manual - Engine compartment

Engine compartment

3.0L ENGINE

5.7L ENGINE

6.4L ENGINE

CHECKING OIL LEVEL — 3.0L ENGINE

The 3.0L engine does not have a traditional “dipstick” and there is no need to manually check the oil level. If it is desired to check engine oil level, it can be seen on the instrument cluster display by navigating to the appropriate screen under “Vehicle Information”. Use the up or down arrow buttons within the steering wheel controls to find the “Vehicle Information” menu. Then use the right or left arrow buttons until you reach the “Oil Level” sub-menu.

There is a bar on the gauge which shows the oil level. As long as the oil level is between the minimum and the maximum it is safe to operate the vehicle. If the oil level is either too high or too low, a red bar will be illuminated.

When the engine is in need of more oil, the Oil Level Warning Light will illuminate. This warning will appear for five seconds. Within the next 300 miles (500 km) you should add one quart of manufacturer specified motor oil to the engine ENGINE FLUIDS AND LUBRICANTS.

This light will reappear every time the engine is started until a safe level is detected. Continuing to operate the vehicle without adding oil may result in a critically low oil level and possible engine damage (see “Critically Low” below).

Note:

Use care when filling under hood fluids such as engine oil, washer fluid, antifreeze, etc. to minimize spillage onto top of engine. Any excess fluid that is spilled onto the top of the engine should be removed using compressed air or absorbent cloth.

Oil Level Display - How To Refresh

In vehicles equipped with the 3.0L engine, the oil level is automatically monitored when the vehicle is parked on a level surface, the oil is warm, and the engine has been off four minutes. To refresh the oil level display (after a quart of the correct oil has been added), follow this process:

• Run the engine until the oil temperature is above 120°F (49°C).

• Park the vehicle on relatively level ground.

• Turn the engine off and cycle the ignition back to the RUN position. Wait four minutes with the engine off, and the ignition in the RUN position.

• Start the engine and the new oil level will be available in the Vehicle Information menu (accessible via the navigation buttons on the steering wheel).

Note:

• If there has not been a notable change in the oil level since the previous reading, there may not be any notification or change in the display after the system has taken another reading.

• The oil level system takes measurements only while the engine is off, has warm oil, and the vehicle is parked on reasonably level ground. In order to get a consistent oil level reading the ignition must be in the RUN position for four minutes, however the system may occasionally take readings with the key OFF during normal usage.

• If you have added a quart of oil and the indicator is not reading 3/4 or full, please contact an authorized dealer for service.

Warning:

Be aware the oil cap may be hot. Please use suitable gloves. WARNING: risk of burns!

CAUTION:

Do not to add too much oil. Overfilling the oil may damage the engine.

Note:

• After adding oil to the engine, always reinstall the oil cap securely by rotating clockwise until it stops. Never run the engine without the oil fill cap as this could cause an oil leak.

• Because the oil level is automatically detected only when the engine has been off and restarted (after four minutes), the system cannot immediately detect a sudden drop in oil level while driving (for example, if the oil pan starts to leak due to damage during an off-road event).

CAUTION:

If the “Critically Low or Critically High” oil level warning light is illuminated, the following steps should be taken:

• Critically Low: add two quarts of manufacturer specified oil as soon as possible ENGINE FLUIDS AND LUBRICANTS. Continuing to operate the vehicle with “Critically Low” oil level may damage the engine.

• Critically High: contact an authorized dealer for service. Continuing to operate the vehicle with “Critically High” oil level may damage the engine.

Do not use any oils that are not manufacturer specified and API approved.

Used engine oil and oil filters contain substances which are harmful to the environment. When oil and filters are changed contact an authorized dealer and dispose of in a safe and responsible manner.

CHECKING OIL LEVEL 5.7L & 6.4L ENGINES

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.

Checking the oil while the vehicle is on level ground will improve the accuracy of the oil level readings.

There are four possible dipstick types:

• Crosshatched zone.

• Crosshatched zone marked SAFE.

• Crosshatched zone marked with MIN at the low end of the range and MAX at the high end of the range.

• Crosshatched zone marked with dimples at the MIN and the MAX ends of the range.

Note:

Always maintain the oil level within the crosshatch markings on the dipstick.

Adding 1 quart (1 liter) of oil when the reading is at the low end of the dipstick range will raise the oil level to the high end of the range marking.

ADDING WASHER FLUID

The instrument cluster display will indicate when the washer fluid level is low. When the sensor detects a low fluid level, the Low Washer Fluid Warning Light will turn on and the "Washer Fluid Low" message will be displayed.

The fluid reservoir for the windshield washers and the rear window washer is shared. The fluid reservoir is located in the engine compartment, be sure to check the fluid level at regular intervals. Fill the reservoir with windshield washer solvent only (not radiator antifreeze). When refilling the washer fluid reservoir, take some washer fluid and apply it to a cloth or towel and wipe clean the wiper blades, this will help blade performance. To prevent freeze-up of your windshield washer system in cold weather, select a solution or mixture that meets or exceeds the temperature range of your climate. This rating information can be found on most washer fluid containers.

Note:

Use care when filling under hood fluids such as engine oil, washer fluid, antifreeze, etc. to minimize spillage onto top of engine. Any excess fluid that is spilled onto the top of the engine should be removed using compressed air or absorbent cloth.

Warning:

Commercially available windshield washer solvents are flammable. They could ignite and burn you. Care must be exercised when filling or working around the washer solution.

MAINTENANCE-FREE BATTERY

Your vehicle is equipped with a maintenance-free battery. Water will never have to be added, and periodic maintenance is not required.

Warning:

• Battery fluid is a corrosive acid solution and can burn or even blind you. Do not allow battery fluid to contact your eyes, skin, or clothing. Do not lean over a battery when attaching clamps. If acid splashes in eyes or on skin, flush the area immediately with large amounts of water. Refer to Jump Starting Procedure Jump Starting Procedure.

• Battery gas is flammable and explosive. Keep flame or sparks away from the battery. Do not use a booster battery or any other booster source with an output greater than 12 Volts. Do not allow cable clamps to touch each other.

• Battery posts, terminals, and related accessories contain lead and lead compounds. Wash hands after handling.

CAUTION:

• It is essential when replacing the cables on the battery that the positive cable is attached to the positive post and the negative cable is attached to the negative post. Battery posts are marked positive (+) and negative (-) and are identified on the battery case. Cable clamps should be tight on the terminal posts and free of corrosion.

• If a “fast charger” is used while the battery is in the vehicle, disconnect both vehicle battery cables before connecting the charger to the battery. Do not use a “fast charger” to provide starting voltage.

PRESSURE WASHING

Cleaning the engine compartment with a high pressure washer is not recommended.

CAUTION:

Precautions have been taken to safeguard all parts and connections however, the pressures generated by these machines is such that complete protection against water ingress cannot be guaranteed.