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
transmission control systems. When these systems are
operating properly, your vehicle will provide excellent
performance and fuel economy, as well as engine emis-
sions 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. Al-
though 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 drivability. The
vehicle must be serviced before any emissions
tests can be performed.
•
If the MIL is flashing while the engine is running,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
Loose Fuel Filler Cap Message
After fuel is added, the vehicle diagnostic system can
determine if the fuel filler cap is possibly loose or
improperly installed. A “gASCAP” message will be dis-
played in the instrument cluster. Tighten the gas cap until
a
⬙
clicking
⬙
sound is heard. This is an indication that the
gas cap is properly tightened. Press the trip odometer
RESET button to turn off the message. If the problem
7
MAINTAINING YOUR VEHICLE
417
Summary of Contents for 2012 Patriot Series
Page 1: ...Patriot O W N E R S M A N U A L 2 0 1 2 3 31 11 10 45 AM...
Page 4: ......
Page 8: ...6 INTRODUCTION...
Page 126: ...124 UNDERSTANDING THE FEATURES OF YOUR VEHICLE...
Page 127: ...3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 125...
Page 128: ...126 UNDERSTANDING THE FEATURES OF YOUR VEHICLE...
Page 194: ......
Page 199: ...INSTRUMENT CLUSTER 4 UNDERSTANDING YOUR INSTRUMENT PANEL 197...
Page 287: ...UNDERSTANDING YOUR INSTRUMENT PANEL 285...
Page 347: ...STARTING AND OPERATING 345...
Page 485: ...INDEX 10...
Page 505: ...Chrysler Group LLC 12MK74 126 AC 3rd Edition Printed in U S A...