
Voltmeter Gage
When your engine is
running, the voltmeter
gage shows the charging
system voltage.
Readings in either warning zone indicate a possible
problem in the electrical system.
Readings in the low warning zone may occur when a
large number of electrical accessories are operating in
the vehicle and the engine is left at an idle for an
extended period. This condition is normal since the
charging system may not be able to provide full power
at engine idle. As engine speeds are increased, this
condition should correct itself because higher engine
speeds allow the charging system to create maximum
power.
You can only drive a short time on the battery. Be sure
to shut off the radio, the fan or any unnecessary
accessories and have the system serviced.
Service Transmission Warning Light
If your vehicle has an Allison®automatic transmission,
certain transmission malfunctions will turn this light on.
This light is located with
the auxiliary warning lights
in the center of the
instrument panel.
If this light comes on while you are driving, do not use
the transmission shift control or you may lose forward
gears. The computer for the transmission senses
a problem and chooses a gear to stay in so that you
can drive the vehicle in that gear. You may not be able
to drive as fast or back up when this light is on.
Notice:If you continue driving your vehicle after the
transmission warning light comes on, you could
damage the transmission. While this light is on, the
transmission cannot operate in all gears. If you
attempt to shift gears, the vehicle may not continue
to move. Do not attempt to shift gears while the
transmission warning light is on. Instead, drive
directly to an authorized dealer for service. If you
cannot drive to a dealer immediately, have the
vehicle towed.
3-30

Range Inhibit Warning Indicator
If your vehicle has an Allison 1000/2200/2300/
2500 series automatic transmission, a lighted bar
under the current gear selected will flash.
If your vehicle has an Allison 3000/3500 series automatic
transmission, the current gear selected on the pushbutton
display will flash.
The flashing bar or gear selection indicates that
transmission range shifts may not occur.
For detailed information on shift inhibit limitations, see
the Allison Automatic Transmission Operator’s Manual in
your vehicle for further information.
Brake System Warning Light
Your vehicle has either hydraulic or air brakes. Each
system has different warning lights.
Hydraulic Brake System Warning Lights
Vehicles with hydraulic brake systems have two brake
system warning lights on the instrument panel.
If the brake warning light
comes on, it means that the
fluid level in the master
cylinder reservoir is low or
there is another problem
with your hydraulic brakes.
When it comes on, you will also hear a warning tone.
This light should come on briefly when you turn the
ignition key to ON/RUN. If it does not come on, then have
it fixed so it will be ready to warn you if there is a problem.
3-31

Diesel Particulate Filter Warning
Light
Your vehicle may have two
Diesel Particulate Filter
(DPF) Warning lights.
These lights will come on briefly when the ignition is
turned to ON/RUN. One of these lights will come on
green during DPF regeneration. If the other light comes
on yellow, perform a manual regeneration or drive the
vehicle for automatic regeneration. If the light changes
from yellow to red, the DPF requires an immediate
regeneration. If the DPF is not regenerated, the service
engine soon light will come on and engine power will be
reduced.
SeeDiesel Particulate Filter on page 2-46andReduced
Engine Power Light on page 3-42for more information.
Air Filter Restriction Indicator
If your vehicle has this
feature, the gage is located
above the switchbank in
the center of the instrument
panel. It monitors the
engine air filter.
As the filter gets dirty, the yellow indicator will begin to
rise. When it reaches the red/orange change area,
the filter should be replaced.
After replacing the filter, reset the gage by pressing in
the yellow reset button at the bottom of the gage.
If you have a Caterpillar
®diesel engine, also see your
Caterpillar®Operation & Maintenance Manual.
3-46

How To Check Power Steering Fluid
Check your power steering fluid only when the engine is
warm. If the engine is not warm, you probably will not
get an accurate reading.
If the fluid level is between the MIN (Minimum) and
MAX (Maximum) marks, you have enough. If you need
fluid, add only enough of the proper fluid to bring it
in between the MIN and MAX marks.
If your power steering fluid level is low, this can cause
the brake or service brakes soon warning lights to come
on. In addition, the steering effort and emergency
brake distance could increase.
If either light remains on after you have added power
steering fluid to the proper level, then shut off the engine
for 10 seconds. This should reset the brake warning
lights. If one or both lights stay on, see “Hydraulic Brake
System Warning Lights” underBrake System Warning
Light on page 3-31for more information.
What to Use
To determine what kind of fluid to use, seePart C:
Recommended Fluids and Lubricants on page 6-31.
Notice:When adding power steering fluid or
making a complete fluid change, always use the
proper fluid. Failure to use the proper fluid can
cause leaks and damage hoses and seals.
Windshield Washer Fluid
What to Use
When you need windshield washer fluid, be sure to read
the manufacturer’s instructions before use. If you will
be operating your vehicle in an area where the
temperature may fall below freezing, use a fluid that has
sufficient protection against freezing.
5-50

Fuse Usage
1 Stoplamps
2 Not Used
3 Parking Lamps
4 Powertrain Control Module
5 Auxiliary Wiring
6 Heater/Air Conditioning
7 Hazard Warning Flashers
8 Power PostFuse Usage
9 Courtesy Lamps
10Warning Lights, Gages and
Indicators
11 Starter
12 Rear Axle/Four-Wheel-Drive
13Trailer Turn Signals/Hazard Warning
Flashers
14 Radio/Chime
15 Daytime Running Lamps
5-97

Mirrors and Sun Visors Check
Check that friction joints hold mirrors and sun visors in
place.
Seat Adjuster Check
When adjusting a manual seat, be sure seat adjusters
latch by attempting to move the seat after latching.
Lamps Check
Check panel lighting, warning lights, indicator lights, and
interior lamps. On the outside, check: license plate lamps,
sidemarker lamps, reflectors or lights on outside mirrors,
headlamps, parking lamps, identification and clearance
lamps, taillamps, brake lamps, turn signals, backup
lamps, and hazard warning flashers. Have headlamp aim
checked at once if beams seem improperly aimed.
Glass, Mirrors, Lamps, and/or
Reflectors Condition Check
Look for broken, scratched, dirty, or damaged glass,
mirrors, lamps, or reflectors that could reduce the view
or visibility or cause injury. Replace, clean, or repair
promptly.
Door Latches Check
Check that doors close, latch, and lock tightly. Check for
broken, damaged, or missing parts that might prevent
tight latching.
Hood Latches Check
Check that the hood closes firmly. Check for broken,
damaged, loose, or missing parts that might prevent tight
latching. Make sure the secondary latch, if the vehicle
has one, keeps the hood from opening all the way when
the primary latch is released.
6-29

K
Keyless Entry System....................................... 2-3
Keys............................................................... 2-2
L
Lamp
Malfunction Indicator....................................3-36
Lamps
Dome ........................................................3-16
Marker.......................................................3-16
Reading.....................................................3-17
Lap Belt........................................................1-27
Lap-Shoulder Belt...........................................1-24
LATCH System for Child Restraints...................1-40
Light
Airbag Off..................................................3-28
Airbag Readiness........................................3-27
Antilock Brake System (ABS) Warning............3-33
Brake System Warning.................................3-31
Change Engine Oil......................................3-39
Change Fuel Filter Warning..........................3-45
Charging System.........................................3-29
Check Gages Warning.................................3-43
Daytime Running Lamps Indicator..................3-42
Diesel Particulate Filter Warning....................3-46
Differential Lock Indicator..............................3-41
Engine Overspeed Warning...........................3-40Light (cont.)
Engine Shutdown Warning............................3-40
Exhaust Brake Indicator................................3-41
Highbeam On.............................................3-42
Low Coolant Warning...................................3-35
Low Oil Level.............................................3-39
Low Washer Fluid Warning...........................3-43
Power Take-Off...........................................3-43
Range Inhibit Warning Indicator.....................3-31
Reduced Engine Power................................3-42
Safety Belt Reminders..................................3-26
Service Transmission Warning.......................3-30
Trailer Antilock Brake System Warning............3-34
Wait to Start Indicator..................................3-35
Water in Fuel Warning.................................
3-45
Lighting
Entry.........................................................3-17
Lights
Exterior Lamps............................................3-14
High/Low Beam Changer................................ 3-8
On Reminder..............................................3-14
Loading Your Vehicle.......................................4-20
Locks
Door ........................................................... 2-6
Power Door .................................................. 2-7
Loss of Control...............................................4-12
Low Coolant Warning Light..............................3-35
Low Washer Fluid Warning Light.......................3-43
Lower Anchors and Tethers for Children.............1-40
7

V
Vehicle
Control........................................................ 4-3
Loading......................................................4-20
Running While Parked..................................2-50
Symbols......................................................... iii
Vehicle Data Recording and Privacy..................7-11
Vehicle Identification
Number (VIN).............................................5-94
Service Parts Identification Label...................5-94
Ventilation Adjustment......................................3-22
Visors............................................................. 2-9
Voltmeter Gage..............................................3-30
W
Wait to Start Indicator......................................3-35
Warning Lights, Gages, and Indicators...............3-23
Warnings
Hazard Warning Flashers............................... 3-6
Safety and Symbols......................................... ii
Washer Fluid, Low Warning Light......................3-43
Water
Fuel..........................................................5-11
Water in Fuel Warning Light.............................3-45
What Fuel to Use............................................. 5-8Wheels
Alignment and Tire Balance..........................5-80
Front Bearings with Oil-Filled Hubs................5-75
Loading......................................................5-78
Replacement...............................................5-84
Tightening the Wheel Nuts............................5-80
Where to Put the Restraint...............................1-38
Windows......................................................... 2-8
Manual........................................................ 2-9
Power ......................................................... 2-9
Sliding Rear................................................. 2-9
Windshield
Washer........................................................ 3-9
Washer Fluid..............................................5-50
Wiper Blade Replacement.............................5-71
Wiper Blades, Cleaning................................5-91
Wiper Fuses...............................................5-95
Wipers......................................................... 3-8
Winter Driving................................................4-17
Y
Your Vehicle and the Environment....................... 6-2
12