Jeep Wrangler: VEHICLE MAINTENANCE / Diesel Exhaust Fluid
Diesel Exhaust Fluid (DEF) sometimes known simply by the name of its active component, UREA—is a key component of Selective Catalytic Reduction (SCR) systems, which help diesel vehicles meet stringent emission regulations. DEF is a liquid reducing agent that reacts with engine exhaust in the presence of a catalyst to convert smog-forming nitrogen oxides (NOx) into harmless nitrogen and water vapor.
Intervention Regeneration Strategy — Message Process Flow
This engine meets all required diesel engine
emissions standards. To achieve these
emissions standards, your vehicle is equipped
with a state-of-the-art engine and exhaust
system...
Accessory Drive Belt Inspection
WARNING!
Do not attempt to inspect an accessory
drive belt with vehicle running.
When working near the radiator cooling fan,
disconnect the fan motor lead...
Other information:
Jeep Wrangler 2018-2024 Owners Manual: Adaptive Cruise Control (ACC) Menu
The instrument cluster display will show the current ACC system settings. The information it displays depends on ACC system status. Push the Adaptive Cruise Control (ACC) on/off button until one of the following appears in the instrument cluster display: Adaptive Cruise Control Off When ACC is deactivated, the display will read “Adaptive Cruise Control Off...
Jeep Wrangler 2018-2024 Owners Manual: Brake Warning Light
This warning light monitors various brake functions, including brake fluid level and parking brake application. If the brake light turns on it may indicate that the parking brake is applied, that the brake fluid level is low, or that there is a problem with the Anti-Lock Brake System reservoir...
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Automatic Headlights — If Equipped, Lights-On Reminder
Automatic Headlights
This system automatically turns the headlights on or off according to ambient light levels. To turn the system on, rotate the headlight switch clockwise to the last detent for automatic headlight operation. When the system is on, the headlight time delay feature is also on. This means the headlights will stay on for up to 90 seconds after you place the ignition into the OFF position. To turn the automatic system off, move the headlight switch out of the AUTO position.
