Dodge Viper SRT (2015 year). Manual — part 17

Tire Spinning

When stuck in mud, sand, snow, or ice conditions, do not
spin your vehicle’s wheels above 30 mph (48 km/h) or
for longer than 30 seconds continuously without stop-
ping.

Refer to “Freeing A Stuck Vehicle” in “What To Do In
Emergencies” for further information.

WARNING!

Fast spinning tires can be dangerous. Forces gener-
ated by excessive wheel speeds may cause tire dam-
age or failure. A tire could explode and injure some-
one. Do not spin your vehicle’s wheels faster than
30 mph (48 km/h) for more than 30 seconds continu-
ously when you are stuck, and do not let anyone near
a spinning wheel, no matter what the speed.

Tread Wear Indicators

Tread wear indicators are in the original equipment tires
to help you in determining when your tires should be
replaced.

1 — Worn Tire
2 — New Tire

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These indicators are molded into the bottom of the tread
grooves. They will appear as bands when the tread depth
becomes a 1/16 of an inch (2 mm). When the tread is
worn to the tread wear indicators, the tire should be
replaced. Refer to “Replacement Tires” in this section for
further information.

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 replace-
ment.

• 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 main-
tenance 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

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wear and correct cold tire inflation pressures. The manu-
facturer strongly recommends that you use tires equiva-
lent to the originals in size, quality and performance
when replacement is needed. Refer to the paragraph on
“Tread Wear Indicator.” 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 ex-
ample 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.

It is recommended you contact your authorized tire
dealer or original equipment dealer with any questions

you may have on tire specifications or capability. Failure
to use equivalent replacement tires may adversely affect
the safety, handling, and ride of your vehicle.

WARNING!

• Do not use a tire, wheel size or rating other than

that specified for your vehicle. Some combinations
of unapproved tires and wheels may change sus-
pension dimensions and performance characteris-
tics, resulting in changes to steering, handling, and
braking of your vehicle. This can cause unpredict-
able handling and stress to steering and suspen-
sion components. You could lose control and have
a collision resulting in serious injury or death. Use
only the tire and wheel sizes with load ratings
approved for your vehicle.

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WARNING! (Continued)

• Never use a tire with a smaller load index or

capacity, other than what was originally equipped
on your vehicle. Using a tire with a smaller load
index could result in tire overloading and failure.
You could lose control and have a collision.

• Failure to equip your vehicle with tires having

adequate speed capability can result in sudden tire
failure and loss of vehicle control.

CAUTION!

Replacing original tires with tires of a different size
may result in false speedometer and odometer read-
ings.

TIRE CHAINS (TRACTION DEVICES)

Due to limited clearance, tire chains or traction devices
are not recommended.

CAUTION!

Damage to the vehicle may result if tire chains are
used.

TIRE ROTATION RECOMMENDATIONS

Tires on the front and rear axles of vehicles operate at
different loads and perform different steering, driving,
and braking functions. For these reasons, they wear at
unequal rates.

These effects can be reduced by timely rotation of tires.
The benefits of rotation are especially worthwhile with
aggressive tread designs such as those on all season type

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tires. Rotation will increase tread life, help to maintain
mud, snow, and wet traction levels, and contribute to a
smooth, quiet ride.

Refer to the “Maintenance Schedule” for the proper
maintenance interval. Remember, more frequent rotation
is permissible if desired. Also, correct for anything caus-
ing rapid or unusual wear prior to performing the tire
rotation.

NOTE:

Each wheel on your vehicle contains a tire pres-

sure sensor. The Tire Pressure Monitor System (TPMS)
learns the location of each sensor though system pro-
gramming. Although not required, the manufacturer
recommends reprogramming the TPMS after rotating the
tires so that the system can relearn each sensor’s location.
See your authorized dealer for system reprogramming.

The front and rear tires are different sizes and cannot be
used in place of each other. Rotate the tires “side-to-side”
as shown in the diagram.

TIRE PRESSURE MONITOR SYSTEM (TPMS)

The Tire Pressure Monitor System (TPMS) uses wireless
technology with wheel rim mounted electronic sensors to
monitor tire pressure levels. Sensors mounted to each
wheel as part of the valve stem transmit tire pressure

Tire Rotation

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readings to the receiver module. It is particularly impor-
tant for you to check the tire pressure in all of the tires on
your vehicle monthly and to maintain the proper pres-
sure. The TPMS consists of the following components:

• Receiver module
• Four TPM sensors
• Various TPMS messages, which display in the Driver

Information Display (DID)

• TPM Telltale Light

The Tire Pressure Monitor System (TPMS) will warn the
driver of a low tire pressure based on the vehicle recom-
mended cold placard pressure.

The tire pressure will vary with temperature by about 1
psi (7.0 kPa) for every 12°F (6.5°C). This means that when
the outside temperature decreases, the tire pressure will
decrease. Tire pressure should always be set based on

cold inflation tire pressure. This is defined as the tire
pressure after the vehicle has not been driven for at least
three hours, or driven less than 1 mile (1.6 km) after a
three hour period. The cold tire inflation pressure must
not exceed the maximum inflation pressure molded into
the tire sidewall. Refer to “Tires – General Information”
in “Starting and Operating” for information on how to
properly inflate the vehicle’s tires. The tire pressure will
also increase as the vehicle is driven - this is normal and
there should be no adjustment for this increased pres-
sure.

The TPMS will warn the driver of a low tire pressure if
the tire pressure falls below the low-pressure warning
limit for any reason, including low temperature effects
and natural pressure loss through the tire.

The TPMS will continue to warn the driver of low tire
pressure as long as the condition exists, and will not turn
off until the tire pressure is at or above the recommended

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cold placard pressure. Once the low tire pressure warning
(Tire Pressure Monitoring [TPM] Telltale Light) illumi-
nates, you must increase the tire pressure to the recom-
mended cold placard pressure in order for the TPM Telltale
Light to turn off. The system will automatically update and
the TPM Telltale Light will turn off once the system
receives the updated tire pressures. The vehicle may need
to be driven for up to 20 minutes above 15 mph (24 km/h)
in order for the TPMS to receive this information.

For example, your vehicle may have a recommended
cold (parked for more than three hours) placard pressure
of 30 psi (207 kPa). If the ambient temperature is 68°F
(20°C) and the measured tire pressure is 27 psi (186 kPa),
a temperature drop to 20°F (-7°C) will decrease the tire
pressure to approximately 23 psi (158 kPa). This tire
pressure is sufficiently low enough to urn ON the TPM
Telltale Light. Driving the vehicle may cause the tire
pressure to rise to approximately 27 psi (186 kPa), but the
TPM Telltale Light will still be ON. In this situation, the

TPM Telltale Light will turn OFF only after the tires are
inflated to the vehicle’s recommended cold placard pres-
sure value.

CAUTION!

• The TPMS has been optimized for the original

equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system op-
eration or sensor damage may result when using
replacement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage. Using aftermarket tire sealants may
cause the Tire Pressure Monitoring System (TPMS)
sensor to become inoperable. After using an after-
market tire sealant it is recommended that you take
your vehicle to your local dealer to have your
sensor function checked.

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273

CAUTION! (Continued)

• After inspecting or adjusting the tire pressure,

always reinstall the valve stem cap. This will
prevent moisture and dirt from entering the valve
stem, which could damage the TPM sensor.

NOTE:

• The TPMS is not intended to replace normal tire care

and maintenance or to provide warning of a tire failure
or condition.

• The TPMS should not be used as a tire pressure gauge

while adjusting your tire pressure.

• Driving on a significantly under-inflated tire causes

the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency and tire
tread life, and may affect the vehicle’s handling and
stopping ability.

• The TPMS is not a substitute for proper tire mainte-

nance, and it is the driver’s responsibility to maintain
correct tire pressure using an accurate tire pressure
gauge, even if under-inflation has not reached the level
to trigger illumination of the TPM Telltale Light.

• Seasonal temperature changes will affect tire pressure,

and the TPMS will monitor the actual tire pressure in
the tire.

Premium System

The Tire Pressure Monitor System (TPMS) uses wireless
technology with wheel rim mounted electronic sensors to
monitor tire pressure levels. Sensors mounted to each
wheel as part of the valve stem transmit tire pressure
readings to the receiver module. It is particularly impor-
tant for you to check the tire pressure in all of the tires on
your vehicle monthly and to maintain the proper pres-
sure. The TPMS consists of the following components:

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• Receiver module
• Four TPM sensors
• Various TPMS messages which display in the Driver

Information Display (DID)

• TPM Telltale Light

Tire Pressure Monitoring Low Pressure Warnings

The TPM Telltale Light will illuminate in the
instrument cluster and a chime will sound when

tire pressure is low in one or more of the four active road
tires. In addition, the Driver Information Display (DID)
will display a

⬙LOW TIRE⬙ message and a graphic

showing the pressure values of each tire with the low tire
pressure values changing color. An

⬙Inflate to XX⬙ mes-

sage will also be displayed.

Should this occur, you should stop as soon as possible
and inflate the tires with a low pressure condition (those
in a different color in the DID graphic) to the vehicle’s
recommended cold placard pressure inflation value as
shown in the

⬙Inflate to XX⬙ message. Once the system

receives the updated tire pressures, the system will
automatically update, the graphic display in the DID will
change color back to the original color, and the TPM
Telltale Light will turn off. The vehicle may need to be
driven for up to 20 minutes above 15 mph (24 km/h) in
order for the TPMS to receive this information.

Service TPMS Warning

If a system fault is detected, the TPM Telltale Light will
flash on and off for 75 seconds and then remain on solid.
The system fault will also sound a chime. In addition, the
Driver Information Display (DID) will display a

⬙SER-

VICE TPM SYSTEM

⬙ message for a minimum of five

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275

seconds and then display dashes (- -) in place of the
pressure value to indicate which sensor is not being
received.

If the ignition switch is cycled, this sequence will repeat,
providing the system fault still exists. If the system fault
no longer exists, the TPM Telltale Light will no longer
flash, and the

⬙SERVICE TPM SYSTEM⬙ message will no

longer display, and a pressure value will display in place
of the dashes. A system fault can occur due to any of the
following:

1. Signal interference due to electronic devices or driving

next to facilities emitting the same radio frequencies as
the TPM sensors.

2. Installing aftermarket window tinting that contains

materials that may block radio wave signals.

3. Accumulation of snow or ice around the wheels or

wheel housings.

4. Using tire chains on the vehicle.

5. Using wheels/tires not equipped with TPM sensors.

The DID will also display a

⬙SERVICE TPM SYSTEM⬙

message for a minimum of five seconds when a system
fault related to an incorrect sensor location fault is
detected. In this case, the

⬙SERVICE TPM SYSTEM⬙

message is then followed with a graphic display with
pressure values still shown. This indicates that the pres-
sure values are still being received from the TPM sensors
but they may not be located in the correct vehicle
position. The system still needs to be serviced as long as
the

⬙SERVICE TPM SYSTEM⬙ message is displayed.

General Information

This device complies with Part 15 of the FCC rules and
RSS 210 of Industry Canada. Operation is subject to the
following conditions:

• This device may not cause harmful interference.

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• This device must accept any interference received,

including interference that may cause undesired op-
eration.

The TPM sensors are regulated under one of the follow-
ing licenses:

United States

MRXMERCTX1

Canada

2546A-MERCTX1

FUEL REQUIREMENTS

8.4L Engine

The 8.4L engine is designed to meet all
emissions regulations and provide excel-
lent fuel economy and performance when
using high-quality premium unleaded
gasoline with an octane rating of 91 or
higher.

Light spark knock at low engine speeds is not harmful to
your engine. However, continued heavy spark knock at
high speeds can cause damage and immediate service is
required.

Poor quality gasoline can cause problems such as hard
starting, stalling, and hesitations. If you experience these
symptoms, try another brand of “premium” gasoline
before considering service for the vehicle.

Over 40 automobile manufacturers around the world
have issued and endorsed consistent gasoline specifica-
tions (the World Wide Fuel Charter, WWFC) which
define fuel properties necessary to deliver enhanced
emissions, engine performance, and durability for your
vehicle. The manufacturer recommends the use of gaso-
lines that meet the WWFC specifications if they are
available.

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Reformulated Gasoline

Many areas of the country require the use of cleaner
burning gasoline referred to as “Reformulated Gasoline.”
Reformulated gasoline contain oxygenates and are spe-
cifically blended to reduce vehicle emissions and im-
prove air quality.

The use of reformulated gasoline is recommended. Prop-
erly blended reformulated gasoline will provide im-
proved performance and durability of engine and fuel
system components.

Gasoline/Oxygenate Blends

Some fuel suppliers blend unleaded gasoline with oxy-
genates such as ethanol.

CAUTION!

DO NOT use gasoline containing Methanol or gaso-
line containing more than 10% Ethanol. Use of these
blends may result in starting and drivability prob-
lems, damage critical fuel system components, cause
emissions to exceed the applicable standard, and/or
cause the “Malfunction Indicator Light” to illumi-
nate. Please observe pump labels as they should
clearly communicate if a fuel contains greater than
10% ethanol.

Problems that result from using gasoline containing
Methanol or gasoline containing more than 10% ethanol
are not the responsibility of the manufacturer and may
void or not be covered under New Vehicle Limited
Warranty.

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E-85 Usage In Non-Flex Fuel Vehicles

Non-Flex Fuel Vehicles (FFV) are compatible with gaso-
line containing up to 10% ethanol (E10). Gasoline with
higher ethanol content may void the New Vehicle Lim-
ited Warranty.

If a Non-FFV vehicle is inadvertently fueled with E-85
fuel, the engine will have some or all of these symptoms:

• Operate in a lean mode.
• OBD II “Malfunction Indicator Light” on.
• Poor engine performance.
• Poor cold start and cold drivability.
• Increased risk for fuel system component corrosion.
To fix a Non-FFV vehicle inadvertently fueled once with
E-85 perform the following:

• Drain the fuel tank (see your authorized dealer).

• Change the engine oil and oil filter.
• Disconnect and reconnect the battery to reset the

engine controller memory.

More extensive repairs will be required for prolonged
exposure to E-85 fuel.

MMT In Gasoline

Methylcyclopentadienyl Manganese Tricarbonyl (MMT)
is a manganese-containing metallic additive that is
blended into some gasoline to increase octane. Gasoline
blended with MMT provides no performance advantage
beyond gasoline of the same octane number without
MMT. Gasoline blended with MMT reduces spark plug
life and reduces emissions system performance in some
vehicles. The manufacturer recommends that gasoline
without MMT be used in your vehicle. The MMT content
of gasoline may not be indicated on the gasoline pump,

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therefore, you should ask your gasoline retailer whether
the gasoline contains MMT. MMT is prohibited in Federal
and California reformulated gasoline.

Materials Added To Fuel

All gasoline sold in the United States is required to
contain effective detergent additives. Use of additional
detergents or other additives is not needed under normal
conditions and they would result in additional cost.
Therefore, you should not have to add anything to the
fuel.

Fuel System Cautions

CAUTION!

Follow these guidelines to maintain your vehicle’s
performance:
• The use of leaded gasoline is prohibited by Federal

law. Using leaded gasoline can impair engine per-
formance and damage the emissions control sys-
tem.

• An out-of-tune engine or certain fuel or ignition

malfunctions can cause the catalytic converter to
overheat. If you notice a pungent burning odor or
some light smoke, your engine may be out of tune
or malfunctioning and may require immediate ser-
vice. Contact your authorized dealer for service
assistance.

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CAUTION! (Continued)

• The use of fuel additives, which are now being

sold as octane enhancers, is not recommended.
Most of these products contain high concentrations
of methanol. Fuel system damage or vehicle perfor-
mance problems resulting from the use of such
fuels or additives is not the responsibility of the
manufacturer and may void or not be covered
under the New Vehicle Limited Warranty.

NOTE:

Intentional tampering with the emissions control

system can result in civil penalties being assessed against
you.

Carbon Monoxide Warnings

WARNING!

Carbon monoxide (CO) in exhaust gases is deadly.
Follow the precautions below to prevent carbon
monoxide poisoning:
• Do not inhale exhaust gases. They contain carbon

monoxide, a colorless and odorless gas, which can
kill. Never run the engine in a closed area, such as
a garage, and never sit in a parked vehicle with the
engine running for an extended period. If the
vehicle is stopped in an open area with the engine
running for more than a short period, adjust the
ventilation system to force fresh, outside air into
the vehicle.

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WARNING! (Continued)

• Guard against carbon monoxide with proper main-

tenance. Have the exhaust system inspected every
time the vehicle is raised. Have any abnormal
conditions repaired promptly. Until repaired, drive
with all side windows fully open.

• Keep the trunk closed when driving your vehicle to

prevent carbon monoxide and other poisonous ex-
haust gases from entering the vehicle.

ADDING FUEL

1. Press the fuel filler door release switch (located in the

driver’s door map pocket).

2. Open the fuel filler door.

NOTE:

In certain cold conditions, ice may prevent the

fuel door from opening. If this occurs, lightly push on the
fuel door to break the ice buildup and re-release the fuel
door using the inside release button. Do not pry on the
door.

3. There is no fuel filler cap. A flapper door inside the

pipe seals the system.

4. Insert the fuel nozzle fully into the filler pipe – the

nozzle opens and holds the flapper door while refuel-
ing.

NOTE:

Only the correct size nozzle opens the latches

allowing the flapper door to open.

5. Fill the vehicle with fuel – when the fuel nozzle

“clicks” or shuts off the fuel tank is full.

6. Remove the fuel nozzle and close the fuel door.

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