Jeep Wrangler 2018-2026 Owners Manual / GETTING TO KNOW YOUR INSTRUMENT PANEL / WARNING LIGHTS AND MESSAGES / Yellow Warning Lights / AdBlue® (UREA) Injection System Failure Warning Light — If Equipped

Jeep Wrangler: Yellow Warning Lights / AdBlue® (UREA) Injection System Failure Warning Light — If Equipped

Jeep Wrangler. AdBlue® (UREA) Injection System Failure Warning Light — If Equipped This warning light will illuminate along with a dedicated message on the display (if equipped) if an unknown fluid not conforming with acceptable characteristics is inserted, or if an average consumption of AdBlue® (UREA) over 50% is detected. Contact an authorized dealer as soon as possible.

If the problem is not solved, a specific message will appear on the Instrument Cluster Display whenever a certain threshold is reached until it will no longer be possible to start the engine.

When about 125 miles (200 km) are remaining before the AdBlue® (UREA) tank is empty, a continuous dedicated message will appear on the instrument panel, accompanied by a chime.

Engine Check/Malfunction Indicator Warning Light (MIL)

The MIL is a part of an Onboard Diagnostic System called OBD II that monitors engine and automatic transmission control systems. This warning light will illuminate when the ignition is in the ON/RUN position before engine start...

Service 4WD Warning Light — If Equipped

This warning light will illuminate to signal a fault with the 4WD system. If the light stays on or comes on during driving, it means that the 4WD system is not functioning properly and that service is required...

Other information:

Jeep Wrangler 2018-2026 Owners Manual: Opening And Closing The Power Top

Express Open/Close Push the open switch and release it within one-half second and the power top will open automatically from any position. The power top will open fully and stop automatically. Push the close switch and release it within one-half second and the sunroof will close automatically from any position...

Jeep Wrangler 2018-2026 Owners Manual: Cooling System Pressure Cap

The cap must be fully tightened to prevent loss of engine coolant (antifreeze), and to ensure that engine coolant will return to the radiator from the coolant expansion bottle/recovery tank if so equipped. The cap should be inspected and cleaned if there is any accumulation of foreign material on the sealing surfaces...