Page 28 of 426
2. Closeness to a radio transmitter such as a radio station
tower, airport transmitter, and some mobile or CB radios.
Transmitter Battery Service
The recommended replacement battery is a 3V lithium
2016 cell. This transmitter requires two batteries.NOTE:Do not touch the battery terminals that are on
the back housing or the printed circuit board.
1. With transmitter buttons facing down, use a flat blade
or dime to pry the two halves of the transmitter apart.
Make sure not to damage the rubber gasket during
removal.
2. Remove and replace the batteries. Be careful not to
disturb the metal terminal near the batteries. Install the
batteries with the positive terminal up, reference the note
9+ SIDE UP9on the inside of the bottom half of the
transmitter case. Avoid touching the new batteries with
your fingers. Skin oils may cause battery deterioration. If
you touch a battery, clean it with rubbing alcohol.
3. To reassemble the transmitter case snap the two halves
together. Make sure there is an even gap between the two
halves. Test transmitter operation.
28 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE
Page 197 of 426
speeds will reduce fogging. Interior fogging on the
windshield can be quickly removed by selecting the
defrost mode.
Regular cleaning of the inside of the windows with a
non-filming cleaning solution (vinegar and water works
very well) will help prevent contaminates (cigarette
smoke, perfumes, etc.) from sticking to the windows.
Contaminates increase the rate of window fogging.
Summer Operation
Air conditioned vehicles must be protected with a high
quality antifreeze coolant during summer to provide
proper corrosion protection and to raise the boiling point
of the coolant for protection against overheating. A 50 %
concentration is recommended. Refer to Recommended
Fluids and Genuine Parts for the proper coolant type.
When using the air conditioner in extremely heavy traffic
in hot weather especially when towing a trailer, addi-
tional engine cooling may be required. If this situation isencountered, operate the transmission in a lower gear to
increase engine RPM, coolant flow and fan speed. When
stopped in heavy traffic, it may be necessary to shift into
NEUTRAL and depress the accelerator slightly for fast
idle operation to increase coolant flow and fan speed.
NOTE:On models equipped with Diesel engines, the
idle speed will automatically increase to 1000 rpm at
elevated coolant temperatures to improve engine cooling.
Your air conditioning system is also equipped with an
automatic recirculation system. When the system senses
a heavy load or high heat conditions, it may use partial
Recirculation A/C mode to provide additional comfort.
Winter Operation
When operating the system during the winter months,
make sure the air intake, located directly in front of the
windshield, is free of ice, slush, snow, or other obstruc-
tions.
UNDERSTANDING YOUR INSTRUMENT PANEL 197
4
Page 213 of 426
WARNING!
Remember to disconnect the cord before driving.
Damage to the 110±115 volt electrical cord could
cause electrocution.
NOTE:The block heater will require 110 Volts AC and
6.5 Amps to activate the heater element.
Block Heater Usage
A.Temperatures below 0ÉF (-18ÉC)
²Block Heater Required for 15W-40
²Block Heater Recommended for 5W-40
B.Temperatures below - 20ÉF (-29ÉC)
²Block Heater Required for 5W-40
Winter Front Usage
If a winter front or cold weather cover is to be used, a
percentage of the total grille opening area must be left
uncovered to provide sufficient air flow to the charge air
cooler and automatic transmission oil cooler. The per-
centage of opening must be increased with the increasing
ambient air temperature and/or engine load. If the
cooling fan can be heard cycling frequently, increase the
size of the opening in the winter front. A suitable cold
weather cover is available from your Mopartdealer.
Battery Blanket Usage
A battery loses 60% of its cranking power as the battery
temperature decreases to 0ÉF (-18É). For the same de-
crease in temperature, the engine requires twice as much
power to crank at the same RPM. The use of 120 VAC
powered battery blankets will greatly increase starting
capability at low temperatures. Suitable battery blankets
are available from your authorized Mopartdealer.
STARTING AND OPERATING 213
5
Page 327 of 426
²Driving in dusty conditions.
²Frequent trailer towing.
²Taxi, police, or delivery service (commercial service).
²Off-road or desert operation.
²Extensive operation at high engine speeds (greater
than 2900 rpm) and loads (greater than 70% throttle).
IfANYof these apply to you, then change your engine oil
at every interval shown in schedule9B9of the9Mainte-
nance Schedules9section of this manual.
If none of these apply to you, then change your engine oil
at every interval shown on schedule9A9of the9Mainte-
nance Schedules9section of this manual.
NOTE:Most vehicles are operated under the conditions
listed for Schedule9B.9
Engine Oil Selection
1. Engine Oil Quality
Use only oils conforming to API
Service CI-4. A sulfated ash limit
is specified for lubrication oil used
in Cummins engines. Oils with a
high ash content may produce de-
posits on valves that can progress
to guttering and valve burning. A
maximum sulfated ash content of
1.85 mass % is recommended for
all oil used in the engine.
2. Engine Oil Viscosity (SAE Grade)
The proper SAE viscosity of engine oil for the expected
ambient temperature range should be selected, as indi-
cated in the following chart:
MAINTAINING YOUR VEHICLE 327
7
Page 328 of 426
NOTE:The same oil change interval is to be followed
for synthetic oil as for petroleum based oil. Also, syn-
thetic oil must meet the same performance specifications
as petroleum oil.Engine Oil Filter
Refer to Recommended Fluids, Lubricants and Genuine
Parts for the correct part number. The engine oil filter
should be changed ateveryengine oil change.
Engine Oil And Filter Ð Change
WARNING!
Hot oil can cause personal injury.
Operate the engine until the coolant temperature reaches
140ÉF (60ÉC). Shut the engine off. Remove the oil drain
plug.
Use a container that can hold at least 12 quarts (11.3
Liters) to hold the used oil.
328 MAINTAINING YOUR VEHICLE
Page 333 of 426
A visual inspection of the air cleaner filter element is
never recommended under normal circumstances. A
badly restricted element may appear clean while a soiled
element may be quite effective in filtering particles
without restricting air flow. Rely on the Filter MinderŸ
to determine when a filter change is necessary.
After a new filter element is inserted, press the rubber
button on the top of the Filter MinderŸ. This action will
reset the yellow disc to the clean position.CAUTION!
When using an engine cleaner or a degreaser, be sure
to wrap and tape the Filter MinderŸ to protect the
plastic housing from damage and discoloration.
NOTE:Many aftermarket performance air filter ele-
ments do not adequately filter the air entering the engine.
Use of such filters can severely damage your engine and
such damage is not covered by the manufacturer's war-
ranty.
MAINTAINING YOUR VEHICLE 333
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Page 339 of 426
Refrigerant Recovery and Recycling
R-134a Air Conditioning Refrigerant is a hydrofluorocar-
bon (HFC) that is endorsed by the Environmental Pro-
tection Agency and is an ozone-saving product. How-
ever, the manufacturer recommends that air conditioning
service be performed by dealers or other service facilities
using recovery and recycling equipment.
NOTE:Air Conditioning systems found to be contami-
nated with A/C System Sealers, Stop Leak Products, Seal
Conditioners, Compressor Oil, or Refrigerants not ap-
proved by the manufacturer, voids the warranty for the
Air Conditioning system.
Power Steering Ð 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 areapparent, and/or the system is not functioning as antici-
pated. Coordinate inspection efforts through a certified
DaimlerChrysler Dealership.9
WARNING!
Fluid level should be checked on a level surface and
with the engine off to prevent injury from moving
parts and to insure accurate fluid level reading. Do
not overfill. Use only manufacturers 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 Recommended Fluids, Lubricants, and
Genuine Parts for correct fluid type.
MAINTAINING YOUR VEHICLE 339
7
Page 349 of 426
The brake master cylinder has a translucent plastic
reservoir. On the outboard side of the reservoir, there is a
ªFULLº dot and an ªADDº dot. The fluid level must be
kept within these two dots. Do not add fluid above the
full mark because leakage may occur at the cap.With disc brakes the fluid level can be expected to fall as
the brake linings wear. However, an unexpected drop in
fluid level may be caused by a leak and a system check
should be conducted.
Refer to Recommended Fluids, Lubricants and Genuine
Parts for the correct Fluid type.
WARNING!
Use of a brake fluid that may have a lower initial
boiling point, or unidentified as to specification,
may result in sudden brake failure during hard
prolonged braking. You could have an accident.
MAINTAINING YOUR VEHICLE 349
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