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: Adding Coolant

Your vehicle has been built with an improved engine coolant (OAT coolant conforming to MS.90032) that allows extended maintenance intervals. This engine coolant (antifreeze) can be used up to 10 years or 150,000 miles (240,000 km) before replacement...

Jeep Wrangler 2018-2026 Owners Manual: 60/40 Split Folding Rear Seat — Four Door Models

To provide additional storage area, each rear seat can be folded flat to allow for extended cargo space. NOTE: Be sure that the front seats are fully upright and positioned forward. This will allow the rear seat to fold down easily. The center head restraints must be in the lowest position to avoid contact with the center console when folding the seat...