Yellow Telltale Indicator Lights
Engine Check/Malfunction Indicator Light (MIL)
Yellow Telltale
Light
What It Means
Engine Check/Malfunction Indicator Light (MIL)
The Engine Check/Malfunction Indicator Light (MIL) is a part of an Onboard Diagnostic System
called OBD II that monitors engine and automatic transmission control systems. The light will
illuminate when the ignition is in the ON/RUN position before engine start. If the bulb does not
come on when turning the key from OFF to ON/RUN, have the condition checked promptly.
Certain conditions, such as a loose or missing gas cap, poor quality fuel, etc., may illuminate the
light after engine start. The vehicle should be serviced if the light stays on through several typical
driving styles. In most situations, the vehicle will drive normally and will not require towing.
When the engine is running, the MIL may flash to alert serious conditions that could lead to im-
mediate loss of power or severe catalytic converter damage. The vehicle should be serviced as
soon as possible if this occurs.
WARNING!
A malfunctioning catalytic converter, as referenced
above, can reach higher temperatures than in normal
operating conditions. This can cause a fire if you drive
slowly or park over flammable substances such as dry
plants, wood, cardboard, etc. This could result in death
or serious injury to the driver, occupants or others.
CAUTION!
Prolonged driving with the Malfunction Indicator
Light (MIL) on could cause damage to the vehicle
control system. It also could affect fuel economy and
driveability. If the MIL is flashing, severe catalytic
converter damage and power loss will soon occur.
Immediate service is required.
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UNDERSTANDING YOUR INSTRUMENT PANEL
Summary of Contents for RAM 1500 2017
Page 4: ......
Page 7: ...1 INTRODUCTION 5 ...
Page 10: ......
Page 157: ...Slow Tone Fast Tone 3 UNDERSTANDING THE FEATURES OF YOUR VEHICLE 155 ...
Page 228: ......
Page 332: ...8 4 8 4 NAV With Manual Temperature Controls 330 UNDERSTANDING YOUR INSTRUMENT PANEL ...
Page 333: ...8 4 8 4 NAV With Automatic Temperature Controls 4 UNDERSTANDING YOUR INSTRUMENT PANEL 331 ...
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Page 681: ...MAINTENANCE SCHEDULES CONTENTS 䡵 MAINTENANCE SCHEDULE 680 Maintenance Chart 681 8 ...
Page 693: ...INDEX 10 ...