2017 DODGE VIPER service indicator

may be sitting improperly. Follow the steps below to allow
the OCS to detect the adult passenger ’s seated weight to
activate the Passenger Advanced Front Air Bag:
1. Turn off the vehicle and have the adult passenger stepout of the vehicle.
2. Remove any extra materials from the passenger seat, such as cushions, pads, seat covers, seat massagers,
blankets, extra clothing, etc.
3. Place the seatback in the full upright position.
4. Have the adult passenger sit in the center of the seat, with the passenger ’s feet comfortably on or near the
floor, and with their back against the seatback.
5. Restart the vehicle and have the passenger remain in this seated position for two to three minutes after
restarting the vehicle.
WARNING!
•If the PAD Indicator Light remains illuminated for
an adult passenger, have an authorized dealer service
the air bag system immediately. Failure to do so may
cause serious injury or death. If the PAD Indicator
(Continued)
WARNING! (Continued)
Light is illuminated with the words “PASSENGER
AIR BAG OFF,” the Passenger Advanced Front Air
Bag will not deploy in the event of a collision.
• Never place a rear-facing child restraint in front of an
air bag. A deploying passenger front air bag can
cause death or serious injury to a child 12 years or
younger, including a child in a rear-facing child
restraint.
• Only use a rear-facing child restraint in a vehicle
with a rear seat.
• Children 12 years or younger should always ride
buckled up in a vehicle with a rear seat.
Lighter Weight Passengers (Including Small Adults)
When a lighter weight passenger, including a small adult,
occupies the passenger seat, the Passenger Advanced Front
Air Bag may be deactivated. Therefore, the Passenger
Advanced Front Air Bag may or may not be activated for a
lighter weight passenger, including a small adult (depend-
ing on size) who is seated in the passenger seat. This does
not mean that the OCS is working improperly.
44 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

WARNING!(Continued)
•Always wear your seat belt and sit properly, with the
seatback in an upright position, your back against
the seatback, sitting upright, facing forward, in the
center of the seat, with your feet comfortably on or
near the floor.
• Do not carry or hold any objects (e.g., backpacks,
boxes, etc.) while seated in the front passenger seat.
Holding an object may provide an output signal to
the OCS that is different than the occupant’s prop-
erly seated weight input, which may result in serious
injury or death in a collision.
The Air Bag Warning Light
will illuminate whenever
the OCS is unable to classify the front passenger seat
status.
A malfunction in the OCS may affect the operation of the
air bag system. If the Air Bag Warning Light
does not
come on, or stays on after you start the vehicle, or it
comes on as you drive, take the vehicle to an authorized
dealer for service immediately.
WARNING!
• Ignoring the Air Bag Warning Light in your instru-
ment panel could mean you won’t have the air bags
to protect you in a collision. If the light does not
come on as a bulb check when the ignition is first
turned on, stays on after you start the vehicle, or if it
comes on as you drive, have an authorized dealer
service the air bag system immediately.
• Placing an object on the floor under the front pas-
senger seat may prevent the OCS from working
properly, which may result in serious injury or death
in a collision. Do not place any objects on the floor
under the front passenger seat.
• If there is a fault present in the OCS, both the PAD
Indicator Light and the Air Bag Warning Light will
illuminate to show that the Passenger Advanced
Front Air Bag is deactivated. Should this occur, the
Passenger Advanced Front Air Bag will remain de-
activated until the fault is cleared. This indicates that
you should take the vehicle to an authorized dealer
for service immediately.
48 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE

Vehicle Security Warning Light — If Equipped
Red TelltaleLight What It Means
Vehicle Security Warning Light — If Equipped
This light will flash at a fast rate for approximately 15 seconds when the vehicle security alarm is
arming, and then will flash slowly until the vehicle is disarmed.
Engine Temperature Warning Light
Red Warning
Light What It Means
Engine Temperature Warning Light
This light warns of an overheated engine condition. As engine coolant temperatures rise and the
gauge approaches
H, this indicator will illuminate and a single chime will sound after reaching a
set threshold. Further overheating will cause a continuous chime sound for 4 minutes, or until
the engine is allowed to cool, whichever comes first.
If the light turns on while driving, safely pull over and stop the vehicle. If the A/C system is on,
turn it off. Also, shift the transmission into NEUTRAL and idle the vehicle. If the temperature
reading does not return to normal, turn the engine off immediately and call for service. Refer to
“If Your Engine Overheats” in “What To Do In Emergencies” for further information.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 119

Yellow Telltale Indicator Lights
Engine Check/Malfunction Indicator Light (MIL)
Yellow TelltaleLight 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 engine
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.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 123

TIRE SAFETY INFORMATION ..............210
▫ Tire Markings ........................ .210
▫ Tire Identification Number (TIN) ............213
▫ Tire Terminology And Definitions ...........214
▫ Tire Loading And Tire Pressure ............215
 TIRES — GENERAL INFORMATION .........220
▫ Tire Pressure ......................... .220
▫ Tire Inflation Pressures ..................221
▫ Tire Pressures For High Speed Operation .....222
▫ Radial Ply Tires ....................... .222
▫ Tire Types ........................... .223
▫ Run Flat Tires — If Equipped ..............223
▫ Spare Tires — If Equipped ................224
▫ Tire Spinning ........................ .226
▫ Tread Wear Indicators ...................226
▫ Life Of Tire .......................... .227
▫ Replacement Tires ..................... .227
TIRE CHAINS (TRACTION DEVICES) .........228
 TIRE ROTATION RECOMMENDATIONS ......229
 DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES ..................229
▫ Treadwear ........................... .230
▫ Traction Grades ....................... .230
▫ Temperature Grades .....................230
 TIRE PRESSURE MONITOR SYSTEM (TPMS) . . .231
▫ Tire Pressure Monitoring Low Pressure
Warnings ............................ .233
▫ Service TPMS Warning ...................233
▫ TPMS

Deactivation — If Equipped ...........234
▫ General Information .....................234
 FUEL REQUIREMENTS ...................235
▫ 8.4L Engine .......................... .235
▫ Reformulated Gasoline ..................235
▫ Gasoline/Oxygenate Blends ...............235
▫ E-85 Usage In Non-Flex Fuel Vehicles .........236
188 STARTING AND OPERATING

Life Of Tire
The service life of a tire is dependent upon varying factors
including, but not limited to:
•Driving style.
• Tire pressure – Improper cold tire inflation pressures can
cause uneven wear patterns to develop across the tire
tread. These abnormal wear patterns will reduce tread
life, resulting in the need for earlier tire replacement.
• Distance driven.
• Performance tires, tires with a speed rating of V or
higher, and Summer tires typically have a reduced tread
life. Rotation of these tires per the vehicle maintenance
schedule is highly recommended.
WARNING!
Tires and the spare tire should be replaced after six
years, regardless of the remaining tread. Failure to
follow this warning can result in sudden tire failure.
You could lose control and have a collision resulting in
serious injury or death. Keep dismounted tires in a cool, dry place with as little
exposure to light as possible. Protect tires from contact with
oil, grease, and gasoline.
Replacement Tires
The tires on your new vehicle provide a balance of many
characteristics. They should be inspected regularly for
wear and correct cold tire inflation pressures. The manu-
facturer strongly recommends that you use tires equivalent
to the originals in size, quality and performance when
replacement is needed. Refer to the paragraph on “Tread
Wear Indicator” in this section. Refer to the Tire and
Loading Information placard or the Vehicle Certification
Label for the size designation of your tire. The Load Index
and Speed Symbol for your tire will be found on the
original equipment tire sidewall. See the Tire Sizing Chart
example found in the “Tire Safety Information” section of
this manual for more information relating to the Load
Index and Speed Symbol of a tire.
It is recommended to replace the two front tires or two rear
tires as a pair. Replacing just one tire can seriously affect
your vehicle’s handling. If you ever replace a wheel, make
sure that the wheel’s specifications match those of the
original wheels.
5
STARTING AND OPERATING 227

FUEL REQUIREMENTS
8.4L Engine
The 8.4L engine is designed to meet all
emissions regulations, provide optimal
fuel economy and performance when
using high-quality unleaded “Pre-
mium” gasoline having a posted octane
number of 91 as specified by the
(R+M)/2 method. The use of 91 or
higher octane “Premium” gasoline is required for in this
engine.
While operating on gasoline with the required octane
number, hearing a light knocking sound from the engine is
not a cause for concern. However, if the engine is heard
making a heavy knocking sound, see your dealer immedi-
ately. Use of gasoline with a lower than recommended
octane number can cause engine failure and may void or
not be covered by the New Vehicle Limited Warranty.
Poor quality gasoline can cause problems such as hard
starting, stalling, and hesitations. If you experience these
symptoms, try another brand of gasoline before consider-
ing service for the vehicle.
Reformulated Gasoline
Many areas of the country require the use of cleaner
burning gasoline referred to as “Reformulated Gasoline”.
Reformulated gasoline contains oxygenates and are specifi-
cally blended to reduce vehicle emissions and improve air
quality.
The use of reformulated gasoline is recommended. Prop-
erly blended reformulated gasoline will provide improved
performance and durability of engine and fuel system
components.
Gasoline/Oxygenate Blends
Some fuel suppliers blend unleaded gasoline with oxygen-
ates such as ethanol.
CAUTION!
DO NOT use gasoline containing methanol or gasoline
containing more than 10% ethanol (E-10). Use of these
blends may result in starting and drivability problems,
damage critical fuel system components, cause emis-
sions to exceed the applicable standard, and/or cause
the “Malfunction Indicator Light” to illuminate. Please
5
STARTING AND OPERATING 235

ONBOARD DIAGNOSTIC SYSTEM (OBD II)
To meet new government regulations and promote cleaner
air, your vehicle is equipped with a sophisticated onboard
diagnostic system called OBD II. This system monitors the
performance of the emissions and engine 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. It will also
store diagnostic codes and other information to assist your
service technician in making repairs. Although your ve-
hicle will usually be drivable and not need towing, see
your authorized dealer for service as soon as possible.
CAUTION!
Prolonged driving with the light on could cause fur-
ther damage to the emission control system. It could
also affect fuel economy and driveability. The vehicle
must be serviced before any state emissions tests can
be performed.If the light is flashing, 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.
WARNING!
•
ONLY an authorized service technician should con-
nect equipment to the OBD II connection port in
order to diagnose or service your vehicle.
• If unauthorized equipment is connected to the OBD
II connection port, such as a driver-behavior tracking
device, it may:
• Be possible that vehicle systems, including safety
related systems, could be impaired or a loss of
vehicle control could occur that may result in an
accident involving serious injury or death.
(Continued)
264 MAINTAINING YOUR VEHICLE