Jeep Wrangler Quiz
STARTING AND OPERATING

System Overview

In this manual: STARTING AND OPERATING
INTRODUCTION — 5KNOW YOUR VEHICLE — 177GETTING TO KNOW THE INSTRUMENT PANEL — 77STARTING AND OPERATING — 126MULTIMEDIA — 106SAFETY — 89IN CASE OF EMERGENCY — 24SERVICE AND MAINTENANCE — 105SPECIFICATIONS — 16CUSTOMER ASSISTANCE — 7
~1min read

This vehicle is equipped with a Diesel Exhaust Fluid (DEF) injection system and a Selective Catalytic Reduction (SCR) catalyst to meet emissions requirements.

The DEF injection system consists of the following components:

  • DEF tank
  • DEF pump
  • DEF injector
  • Electrically heated DEF lines
  • NOx sensors
  • Temperature sensors
  • SCR catalyst

The DEF injection system and SCR catalyst allow the vehicle to meet diesel emissions requirements while maintaining excellent fuel economy, drivability, torque, and power ratings.

NOTE:

  • Your vehicle is equipped with a DEF injection system. Occasionally you may hear a clicking sound from under the vehicle when stopped. This is normal operation.
  • The DEF pump will run for a period of time after the engine is turned off to purge the DEF system. This is normal operation and may be heard at the rear of the vehicle.

Test yourself

A quick Jeep Wrangler quiz: every answer comes with an explanation and a link to the manual page.