Blue Indicator Lights;  — High Beam Indicator Light; ONBOARD DIAGNOSTIC SYSTEM — OBD II- Page 201

2018 Jeep Wrangler JK Owner Manual

Table of Contents

GETTING TO KNOW YOUR VEHICLE
GETTING TO KNOW YOUR INSTRUMENT PANEL
SAFETY
OCCUPANT RESTRAINT SYSTEMS
STARTING AND OPERATING
SERVICING AND MAINTENANCE
MULTIMEDIA
UCONNECT PHONE — IF EQUIPPED
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then 30 mph (48 km/h). If these conditions are not met

while attempting to use the HDC feature, the HDC indi-

cator light will flash on/off.

Blue Indicator Lights

— High Beam Indicator Light

This indicator light will illuminate to indicate that the high

beam headlights are on. With the low beams activated,

push the multifunction lever forward (toward the front of

the vehicle) to turn on the high beams. Pull the multifunc-

tion lever rearward (toward the rear of the vehicle) to turn

off the high beams. If the high beams are off, pull the lever

toward you for a temporary high beam on,

flash to pass

scenario.

ONBOARD DIAGNOSTIC SYSTEM — OBD II

Your vehicle is equipped with a sophisticated Onboard

Diagnostic system called OBD II. This system monitors the

performance of the emissions, engine, and automatic trans-

mission control systems. When these systems are operating

properly, your vehicle will provide excellent performance

and fuel economy, as well as engine emissions well within

current government regulations.

If any of these systems require service, the OBD II system

will turn on the Malfunction Indicator Light (MIL). It will

also store diagnostic codes and other information to assist

your service technician in making repairs. Although your

vehicle will usually be drivable and not need towing, see

your authorized dealer for service as soon as possible.

CAUTION!

Prolonged driving with the MIL on could cause
further damage to the emission control system. It
could also affect fuel economy and driveability. The
vehicle must be serviced before any emissions tests
can be performed.

If the MIL is flashing while the vehicle is running,

severe catalytic converter damage and power loss
will soon occur. Immediate service is required.

Onboard Diagnostic System (OBD II) Cybersecurity

Your vehicle is required to have an Onboard Diagnostic

system (OBD II) and a connection port to allow access to

information related to the performance of your emissions

controls. Authorized service technicians may need to ac-

cess this information to assist with the diagnosis and

service of your vehicle and emissions system.

4

GETTING TO KNOW YOUR INSTRUMENT PANEL

199

Detailed Information for 2018 Jeep Wrangler JK Owner Manual

Lists of information found in 2018 Jeep Wrangler JK Owner Manual - Page 201

  • Prolonged driving with the MIL on could cause further damage to the emission control system.
  • If the MIL is flashing while the vehicle is running, severe catalytic converter damage and power loss will soon occur.

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