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 2018-2025 Owners Manual: Reprogramming A Single HomeLink® Button
To reprogram a single HomeLink® button that has been previously trained, without erasing all the channels, follow the procedure below. Be sure to determine if the new device you want to program the HomeLink® button to has a rolling code or a non-rolling code...
Jeep Wrangler 2018-2025 Owners Manual: Selec-Speed Control (SSC) — If Equipped
SSC is intended for off-road driving in 4WD Low only. SSC maintains vehicle speed by actively controlling engine torque and brakes. SSC has three states: Off (feature is not enabled and will not activate) Enabled (feature is enabled and ready but activation conditions are not met, or driver is actively overriding with brake or throttle application) Active (feature is enabled and actively controlling vehicle speed) Enabling SSC SSC is enabled by pushing the SSC switch, but the following conditions must also be met to enable SSC: The driveline is in 4WD Low...
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- Service 4WD Warning Light — If Equipped
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- Auxiliary Switches — If Equipped
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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.
