engine DODGE VIPER 2015 VX / 3.G Service Manual

5. Rapidly press the accelerator pedal to the floor within
one second.
NOTE:If the cluster launch DID message indicates all
conditions are correct for launch and the throttle is
pressed to the floor quickly (within approximately 1/2
second) the system will hold the engine speed to a preset
speed (below the engine rev limiter speed).
6. Release the clutch aggressively. Do not ride the clutch.
Release the accelerator pedal to deactivate launch con-
trol. Pressing the launch control button or actuating the
brakes will also deactivate launch control.
NOTE:
•Launch Mode brings the engine to optimum launch
RPM and waits for the driver to release the clutch.
Launch Mode then uses engine throttle only to achieve
controlled wheelslip for maximum acceleration
through first gear.
•Launch Mode can be used in any of the Electronic
Stability Control (ESC) Modes.
LAUNCH Button
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•Launch mode should not be used within the first 500
miles of engine break-in.
WARNING!
Launch Mode is intended for off-highway or off-road
use only and should not be used on any public
roadways. It is recommended that this feature be
used in a controlled environment, and within the
limits of the law. The capabilities of the vehicle as
measured by the performance pages must never be
exploited in a reckless or dangerous manner, which
can jeopardize the user ’s safety or the safety of
others. Only a safe, attentive, and skillful driver can
prevent accidents.
DRIVING ON SLIPPERY SURFACES
Acceleration
WARNING!
Rapid acceleration on slippery surfaces is dangerous.
You could lose control of the vehicle and possibly
have a collision. Accelerate slowly and carefully
whenever there is likely to be poor traction (ice,
snow, wet, mud, loose sand, etc.).
Traction
When driving on wet or slushy roads, it is possible for a
wedge of water to build up between the tire and road
surface. This is hydroplaning and may cause partial or
complete loss of vehicle control and stopping ability. To
reduce this possibility, the following precautions should
be observed:
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1. Slow down during rainstorms or when roads are
slushy.
2. Slow down if road has standing water or puddles.
CAUTION!
Driving your vehicle through deep puddles at speeds
over 5 mph (8 km/h), may cause water to be ingested
into the engine. This can cause severe engine dam-
age.
3. Replace tires when tread wear indicators first become
visible.
4. Keep tires properly inflated.
5. Maintain enough distance between your vehicle and
the vehicle in front of you to avoid a collision in a
sudden stop.
DRIVING THROUGH WATER
Driving through water more than a few inches/
centimeters deep will require extra caution to ensure
safety and prevent damage to your vehicle.
Flowing/Rising Water
WARNING!
Do not drive on or across a road or path where water
is flowing and/or rising (as in storm run-off). Flow-
ing water can wear away the road or path’s surface
and cause your vehicle to sink into deeper water.
Furthermore, flowing and/or rising water can carry
your vehicle away swiftly. Failure to follow this
warning may result in injuries that are serious or
fatal to you, your passengers, and others around you.
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CAUTION!(Continued)
•Driving through standing water may cause damage
to your vehicle’s drivetrain components. Always
inspect your vehicle’s fluids (i.e., engine oil, trans-
mission, axle, etc.) for signs of contamination (i.e.,
fluid that is milky or foamy in appearance) after
driving through standing water. Do not continue to
operate the vehicle if any fluid appears contami-
nated, as this may result in further damage. Such
damage is not covered by the New Vehicle Limited
Warranty.
•Getting water inside your vehicle’s engine can
cause it to lock up and stall out, and cause serious
internal damage to the engine. Such damage is not
covered by the New Vehicle Limited Warranty.
POWER STEERING
The standard power steering system will give you good
vehicle response and increased ease of maneuverability
in tight spaces. The system will provide mechanical
steering capability if power assist is lost.
If for some reason the power assist is interrupted, it will
still be possible to steer your vehicle. Under these condi-
tions, you will observe a substantial increase in steering
effort, especially at very low vehicle speeds and during
parking maneuvers.
NOTE:
•Increased noise levels at the end of the steering wheel
travel are considered normal and do not indicate that
there is a problem with the power steering system.
•Upon initial start-up in cold weather, the power steer-
ing pump may make noise for a short amount of time.
This is due to the cold, thick fluid in the steering
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system. This noise should be considered normal, and it
does not in any way damage the steering system.
CAUTION!
Prolonged operation of the steering system at the end
of the steering wheel travel will increase the steering
fluid temperature and it should be avoided when
possible. Damage to the power steering pump may
occur.
Power Steering Fluid Check
Checking the power steering fluid level at a defined
service interval is not required. The fluid should only be
checked if a leak is suspected, abnormal noises are
apparent, and/or the system is not functioning as antici-
pated. Coordinate inspection efforts through an autho-
rized dealer.
CAUTION!
Do not use chemical flushes in your power steering
system as the chemicals can damage your power
steering components. Such damage is not covered by
the New Vehicle Limited Warranty.
WARNING!
Fluid level should be checked on a level surface and
with the engine off to prevent injury from moving
parts and to ensure accurate fluid level reading. Do
not overfill. Use only manufacturer’s recommended
power steering fluid.
If necessary, add fluid to restore to the proper indicated
level. With a clean cloth, wipe any spilled fluid from all
surfaces. Refer to “Fluids, Lubricants, and Genuine
Parts” in “Maintaining Your Vehicle” for further informa-
tion.
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BRAKE SYSTEM
Your vehicle is equipped with dual hydraulic
brake systems. If either of the two hydraulic
systems loses normal capability, the remaining
system will still function. However, there will
be some loss of overall braking effectiveness. You may
notice increased pedal travel during application, greater
pedal force required to slow or stop, and potential
activation of the “Brake System Warning Light.”
In the event power assist is lost for any reason (i.e.,
repeated brake applications with the engine off) the
brakes will still function. However, the effort required to
brake the vehicle will be much greater than that required
with the power system operating.
Brake Pad Break-In
NOTE:Your vehicle is equipped with a high perfor-
mance braking system. The brake pads are a semi-
metallic compound, which offer superior fade resistance
for consistent operation. A compromise to using this type
of brake pad is that the brakes may squeal slightly under
certain weather and operating conditions (.i.e., during
light brake applications).
The brakes on your new vehicle do not require a long
break-in period. However, you should avoid repeated
hard brake applications from high speeds during initial
break-in. In addition, you should avoid severe brake
loading, such as may be encountered when descending
long mountain grades.
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properly inflated to produce accurate signals for the
computer.
WARNING!
Significant over or underinflation of tires, or mixing
sizes of tires or wheels on the vehicle can lead to loss
of braking effectiveness.
Anti-Lock Brake Warning Light
The “Anti-Lock Brake Warning Light” will turn
on and stay on briefly as a bulb check when the
ignition is first turned on. If the light does not
turn on during starting, have it repaired
promptly.
This light also illuminates at vehicle start-up to indicate
that the ABS self-check is in process. If the light remains
on after start-up, or turns on and remains on at road
speeds, it may indicate a system malfunction or that the
system is inoperative. In this case, the system reverts to
standard non-anti-lock brakes. If this occurs, safely bring
the vehicle to a complete stop as soon as possible and
cycle the ignition to attempt to reset the ABS. If the light
remains on, see your authorized dealer immediately to
have the system serviced. Also, if the “BRAKE Warning
Light” and the “ABS Warning Light” are on, and the
parking brake is fully released, see your authorized
dealer immediately.
Traction Control System (TCS)
The TCS system monitors the amount of wheel spin of
each driven wheel. If wheel spin is detected, brake
pressure is applied to the slipping wheel(s) and engine
power is reduced to provide enhanced acceleration and
stability.
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Electronic Stability Control
In full on mode the TCS system enhances directional
control and stability of the vehicle under various driving
conditions. The ESC corrects for oversteering and under-
steering the vehicle by applying the brake of the appro-
priate wheel. Engine power may also be reduced to assist
in counteracting the condition of oversteer or understeer
and help the vehicle maintain the desired path.
In full on mode ESC utilizes sensors in the vehicle to
determine the path that the driver intends to steer the
vehicle and compares it to the actual path of the vehicle.
When the actual path does not match the intended path,
the ESC applies the brake of the appropriate wheel to
assist in counteracting the condition of oversteer or
understeer.
•Oversteer – when the vehicle is turning more than
appropriate for the steering wheel position.
•Understeer – when the vehicle is turning less than
appropriate for the steering wheel position.
WARNING!
The Electronic Stability Control System (ESC) cannot
prevent the natural laws of physics from acting on
the vehicle, nor can it increase the traction afforded
by prevailing road conditions. ESC cannot prevent
all accidents, including those resulting from exces-
sive speed in turns, driving on very slippery surfaces,
or hydroplaning. ESC also cannot prevent accidents
resulting from loss of vehicle control due to inappro-
priate driver input for the conditions. Only a safe,
attentive, and skillful driver can prevent accidents.
The capabilities of an ESC equipped vehicle must
never be exploited in a reckless or dangerous manner
which could jeopardize the user ’s safety or the safety
of others.
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Electronic Stability Control (ESC) Operating
Modes
The ESC system may have five available operating
modes:
ESC On
This is the normal operating mode for the ESC system.
Whenever the vehicle is started, the ESC system will be in
this mode. The ESC On mode should be used for most
driving situations. The ESC should only be turned OFF
for specific reasons as noted in the following paragraphs.
ESC Full Off
The ESC Off mode is intended for off-highway or off-
road use only and should not be used on any public
roadways. In this mode, all TCS and ESC stability fea-
tures are turned OFF. To enter the “Full Off” mode, press
and hold the “ESC Off” switch for five seconds while the
vehicle is stopped with the engine running. After five
seconds, a chime will sound, the “ESC Activation/
Malfunction Indicator Light” will illuminate, and the
ESC Button
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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 StatesMRXMERCTX1
Canada2546A-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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