2008 DODGE VIPER engine

The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
²The warning words ªDO NOT OPEN HOTº on
the cooling system pressure cap are a safety pre-
caution. Never add coolant when the engine is
overheated. Do not loosen or remove the cap to
cool an overheated engine. Heat causes pressure to
build up in the cooling system. To prevent scald-
ing or injury, do not remove the pressure cap while
the system is hot or under pressure.
²Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or en-
gine damage may result.
Disposal of Used Coolant
Used ethylene glycol based engine coolant is a regulated
substance requiring proper disposal. Check with your
local authorities to determine the disposal rules for your
community. To prevent ingestion by animals or children,
do not store ethylene glycol based engine coolant in open
containers or allow it to remain in puddles on the
ground. If ingested by a child, contact a physician
immediately. Clean up any ground spills immediately.
Coolant Level
The coolant bottle provides a quick visual method for
determining that the coolant level is adequate. With the
engine idling, and warm to normal operating tempera-
ture, the level of the coolant in the bottle should be
between the ranges indicated on the bottle.
The radiator normally remains completely full, so there is
no need to remove the radiator cap unless checking for
coolant freeze point or replacing coolant. Advise your
222 MAINTAINING YOUR VEHICLE

service attendant of this. As long as the engine operating
temperature is satisfactory, the coolant bottle need only
be checked once a month.
When additional coolant is needed to maintain the
proper level, it should be added to the coolant bottle. Do
not overfill.
Points to Remember
NOTE:When the vehicle is stopped after a few miles (a
few kilometers) of operation, you may observe vapor
coming from the front of the engine compartment. This is
normally a result of moisture from rain, snow, or high
humidity accumulating on the radiator and being vapor-
ized when the thermostat opens, allowing hot coolant to
enter the radiator.
If an examination of your engine compartment shows no
evidence of radiator or hose leaks, the vehicle may be
safely driven. The vapor will soon dissipate.
²Do not overfill the coolant recovery bottle.
²Check coolant freeze point in the coolant bottle. If
antifreeze needs to be added, contents of the coolant
bottle also must be protected against freezing.
²If frequent coolant additions are required, or if the
level in the coolant recovery bottle does not drop when
the engine cools, the cooling system should be pres-
sure tested for leaks.
²Maintain coolant concentration at 50% HOAT engine
coolant (minimum) and distilled water for proper
corrosion protection of your engine, which contains
aluminum components.
²Make sure that the radiator and coolant recovery
bottle overflow hoses are not kinked or obstructed.
²Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean, also.
MAINTAINING YOUR VEHICLE 223
7

²Inspect the brake hoses whenever the brake system is
serviced and at every engine oil change. Inspect hy-
draulic brake hoses for surface cracking, scuffing, or
worn spots. If there is any evidence of cracking,
scuffing, or worn spots, the hose should be replaced
immediately! Eventual deterioration of the hose can
take place resulting in a possibility of a burst failure.
WARNING!
Worn brake hoses can burst and cause brake failure.
You could have an accident. If you see any signs of
cracking, scuffing, or worn spots, have the brake
hoses replaced immediately.
Master Cylinder - Brake Fluid Level Check
Check the fluid level in the master cylinder immediately
if the brake system warning light indicates system fail-
ure.
Check the fluid level in the master cylinder when per-
forming underhood services.
Clean the top of the master cylinder area before removing
the cap. If necessary, add fluid to bring the fluid level up
to the requirements described on the brake fluid reser-
voir.
Overfilling of fluid is not recommended because it may
cause leaking in the system.
With disc brakes, fluid level can be expected to fall as the
brake pads wear. However, low fluid level may be caused
by a leak and a checkup may be needed.
226 MAINTAINING YOUR VEHICLE

Use only the manufacturer's recommended brake fluid.
Refer to ªFluids, Lubricants, and Genuine Partsº for the
correct fluid type. Use of a brake fluid that may have a
lower initial boiling point or unidentified as to specifica-
tion, may result in sudden brake failure during hard
prolonged braking.
WARNING!
Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts and the
brake fluid catching fire.
Use only brake fluid that has been in a tightly closed
container to avoid contamination from foreign matter.
CAUTION!
²Do not allow petroleum base fluid to contaminate
the brake fluid, all brake seal components could
be damaged causing partial or complete brake
failure.
²Brake fluid can damage the finish of your vehicle.
Do not allow brake fluid to contact any painted
surface.
Change Brake Fluid
Brake fluid will tend to absorb moisture from the atmo-
sphere over time. If the fluid becomes contaminated with
water, brake performance will deteriorate. Therefore, the
brake fluid must be changed at the intervals specified in
the ªMaintenance Schedulesº in this manual. See your
authorized dealer for service.
MAINTAINING YOUR VEHICLE 227
7

Use only the manufacturer's recommended clutch fluid.
Refer to ªFluids, Lubricants, and Genuine Partsº for the
correct fluid type.
WARNING!
Overfilling the clutch fluid reservoir can result in
spilling clutch fluid on hot engine parts and the
clutch fluid catching fire.
Use only clutch fluid that has been in a tightly closed
container to avoid contamination from foreign matter.
CAUTION!
²Do not allow petroleum base fluid to contaminate
the clutch fluid, all clutch seal components could
be damaged causing partial or complete clutch
failure.
²Clutch fluid can damage the finish of your vehicle.
Do not allow clutch fluid to contact any painted
surface.
Change Clutch Fluid
Clutch fluid will tend to absorb moisture from the
atmosphere over time. If the fluid becomes contaminated
with water, clutch performance will deteriorate. There-
fore, the clutch fluid must be changed at the intervals
specified in the ªMaintenance Schedulesº in this manu-
al.See your authorized dealer for service.
MAINTAINING YOUR VEHICLE 229
7

FUSES (POWER DISTRIBUTION CENTERS)
Fuses (Power Distribution Center)
A power distribution center is located in the engine
compartment on the driver's side of the vehicle. This
center contains fuses and relays.
Cavity Car-
tridge
FuseMini
FuseDescription
1 40 Amp
GreenÐ Blower Motor
2 40 Amp
GreenÐ Anti-Lock Brakes (ABS)
Pump Feed/Starter
3 30 Amp
PinkÐ Body Control Module
(BCM) - Battery Feed
4 20 Amp
BlueÐ Amplifier
5 30 Amp
PinkÐ Ignition Switch Run/
Accessory Feed -
Windows/Adjustable Ped-
als
6 40 Amp
GreenÐ Body Control Module
(BCM) - Battery Feed
7 30 Amp
PinkÐ Anti-Lock Brakes (ABS)
Module
Power Distribution Center
234 MAINTAINING YOUR VEHICLE

Fuses (Mini-Power Distribution Center)
A mini-power distribution center is located in the engine
compartment on the passenger's side of the vehicle. This
center contains radiator fan control relays and has two
externally-mounted 40 Amp fuses for the radiator fans.CAUTION!
²When installing the Mini-Power Distribution
Center cover, it is important to ensure the cover is
properly positioned and fully latched. Failure to
do so may allow water to get into the Power
Distribution Center, and possibly result in an
electrical system failure.
²When replacing a blown fuse, it is important to
use only a fuse having the correct amperage rating.
The use of a fuse with a rating other than indicated
may result in a dangerous electrical system over-
load. If a properly rated fuse continues to blow, it
indicates a problem in the circuit that must be
corrected.
Mini-Power Distribution Center
MAINTAINING YOUR VEHICLE 237
7

Then, either disconnect the battery at the negative
terminal or use the ªBattery Save Featureº to conserve
battery power. Refer to ªBattery Save Featureº under
ªMaintenance Proceduresº in this section for details.
NOTE:Disconnecting the battery causes the engine
control system to lose memory of some ªlearnedº func-
tions. After reconnecting the battery, the engine may run
rough until the control module ªrelearnsº these func-
tions. Using the Battery Save Feature will prevent the
engine controller from loosing its memory.CAUTION!
Use care when disconnecting the remote positive
cable. It is connected to the battery and can short out
to any metal on the vehicle. Always tape or wrap the
exposed cable end to prevent electrical shorts.
²Check the battery every 4 to 6 weeks to ensure that the
voltage is above 12.40 volts. The voltage will drop
more rapidly in hot temperatures. If battery voltage
drops below 12.40 volts, follow the battery recharge
procedure in the Service Manual.
MAINTAINING YOUR VEHICLE 239
7