
Gauge Package (If Equipped)
Your vehicle may be equipped with an optional gauge package that has
one of the following configurations:
1.Transmission temperature
gauge:Displays the
transmission temperature at the
transmission sump.
2.Hourmeter:Displays the hours
of engine run time.
3.Voltmeter:Displays electrical
system voltage.
WARNING LAMPS AND INDICATORS
The following warning lamps and indicators alert you to a vehicle
condition that may become serious. Some lamps illuminate when you
start your vehicle to make sure they work. If any lamps remain on after
starting your vehicle, see the respective system warning lamp for further
information.
Note:Some warning indicators appear in the information display. These
indicators function the same as a warning lamp but do not display when
you start your vehicle.
Anti-Lock Braking System
If it illuminates when you are driving, this indicates a
malfunction. You continue to have the normal braking system
(without ABS) unless the brake warning lamp is also
illuminated. Have the system checked by an authorized dealer.
Brake System
To confirm the brake system warning light is functional, it
momentarily illuminates when you turn the ignition to the on
position when the engine is not running, or in a position
between on and start.
If the brake system warning light does not illuminate at this time, seek
service immediately from an authorized dealer.
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WARNING:Driving a vehicle with the brake system warning
light on is dangerous. A significant decrease in braking
performance may occur. It takes you longer to stop the vehicle. Have
the vehicle checked by your authorized dealer. Driving extended
distances with the parking brake engaged can cause brake failure and
the risk of personal injury.
Charging System
It illuminates when the 12–volt battery is not charging properly.
Contact an authorized dealer as soon as possible. This indicates
a problem with the electrical system or a related component.
Check Fuel Cap (gasoline engine only)
It illuminates when you may not have installed the fuel cap
properly. Continued driving with this light on may cause the
service engine soon warning indicator to come on.
Check Suspension
It illuminates when you press the air suspension dump switch.
Check Transmission (Allison automatic transmission only)
It illuminates while driving if a transmission problem exists;
shifting may be restricted. Depending on the severity of the
problem, the shifter’s digital read-out may turn blank.
On MD 3000 series transmissions, operation may continue in order to
reach service assistance. The control unit may not respond to shift
selector requests, since there are operating limitations on the
transmission (such as upshift and downshift restrictions). Direction
changes do not occur.
Cruise Control
It illuminates when you switch this feature on.
CK
SUSP
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Diesel Exhaust Fluid (diesel engine only)
It illuminates when the diesel exhaust fluid level falls below
0.5 gallons (1.9L) in the 5- gallon (19.0L) tank or one gallon
(3.8L) in the 9-gallon (34.0L) tank. Refill the tank or, at a
minimum, add at least one gallon (3.8L) to the 5- gallon (19.0L) tank or
two gallons (7.6L) to the 9- gallon (34.0L) tank.
Diesel Particulate Filter (diesel engine only)
It illuminates when the soot level in the diesel particulate filter
has reached a point where it requires operator assistance. See
Diesel particulate filterin theMaintenancechapter, and your
engine operator’s manual, for more details.
Do Not Shift (Allison automatic transmission only)
It illuminates while driving if a transmission problem exists;
shifting may be restricted. Depending on the severity of the
problem, the shifter’s digital read-out may turn blank.
Operation may continue in order to reach service assistance. The control
unit may not respond to shift selector requests, since there are operating
limitations on the transmission (such as. upshift and downshift
restrictions). Direction changes do not occur.
Direction Indicator
It illuminates when you turn on the left or right turn signal or
the hazard warning flasher. If the indicators stay on or flash
faster, check for a burned out bulb.
Electronic Locking Differential
It illuminates when using the electronic locking differential.
Engine Oil Pressure (gasoline engine only)
It illuminates when engine oil pressure is low.
Fasten Safety belt
It illuminates and a tone sounds to remind you to fasten your
safety belt.
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High Beam
It illuminates when you turn on the headlamp high beam.
Low Fuel Level (gasoline engine only)
It illuminates when the fuel level is low or near empty. Refuel
as soon as possible.
Parking Brake Warning
It momentarily illuminates when you turn the ignition to the on
position (with the engine off). It also illuminates when you
apply the parking brake. If the parking brake warning lamp
does not illuminate at these times, seek service immediately.
Vehicles equipped with the Power Park Parking Brake option: If the park
brake warning lamp begins to blink after setting the parking brake on
your vehicle, this may indicate a failure in the parking brake system.
Seek service from an authorized dealer immediately.
Powertrain Malfunction/Reduced Power/Electronic Throttle
Control (gasoline engine only)
It illuminates when a powertrain fault exists. Contact an
authorized dealer as soon as possible.
Service Engine Soon
It illuminates when you turn the ignition to the on position to
check the bulb and to indicate whether the vehicle is ready for
Inspection/Maintenance (I/M) testing.
Solid illumination after you start the engine indicates the on-board
diagnostics (OBD-II) system has detected a malfunction.
WARNING:Under engine misfire conditions, excessive exhaust
temperatures could damage the catalytic converter, the fuel
system, interior floor coverings or other vehicle components, possibly
causing a fire.
P
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Stop Engine (diesel engine only)
This red lamp illuminates when you need to stop the engine (as
soon as it is safely possible). If the lamp begins flashing,
automatic engine shutdown may take place in as little as
20 seconds.
WARNING:In the event of engine shutdown, make sure the
vehicle is safely off the road and the problem is remedied prior to
returning to the road. Failure to remove the vehicle from the road
could result in an accident, causing serious injury or death.
If the engine shuts down, you can restart and operate it for 30 seconds
at a time, or until you correct the problem. For more information, see
Engine automatic shutdown warning light or tonein theDriving
chapter, and your engine operator’s manual.
See your engine operator’s manual for specific information about this
feature. Drivers of electronically controlled engines should know the
extent of the warning engine shutdown system before operating the
vehicle.
Traction Control (diesel engine only)
It illuminates and flashes slowly if you select the Off Road or
Mud/Snow mode. It illuminates and flashes rapidly during a
traction control event.
Trailer Anti-Lock Braking System (ABS)
It illuminates briefly when you turn the ignition on and only
when a PLC trailer or a PLC diagnostic tool is connected. If the
light fails to illuminate, remains on after you start the vehicle or
continues to flash, have the system serviced immediately.
Wait to Start (diesel engine only)
It illuminates when the air intake heater is in operation and
special starting procedures are required.
WARNING:If equipped with an air intake heater, DO NOT use
ether or any other starting fluids. The use of starting fluids
(ether) in an engine equipped with an air intake heater could result in
damage and/or personal injury.
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Water in Fuel (diesel engine only)
It illuminates when the fuel filter/water separator has a
significant quantity of water in it.
If the light illuminates when the engine is running, stop the
vehicle as soon as safely possible, shut off the engine, then drain the fuel
filter and water separator. See your engine operator’s manual for the
drain procedure. Allowing water to stay in the system could result in
extensive damage to, or failure of, the fuel injection system.
WARNING:Do not drain the water separator while the engine is
running. Fuel may ignite if the separator is drained while the
engine is running or the vehicle is moving.
AUDIBLE WARNINGS AND INDICATORS
Key In Ignition Warning Tone
Sounds when you leave the key in the ignition in the off or accessory
position and open the driver’s door.
Headlamps On Warning Tone
Sounds when the headlamps or parking lamps are on, the ignition is off
(the key is not in the ignition) and the driver’s door is opened.
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Recommended settings for cooling:
•Adjust the air distribution control to the A/C position.
If your vehicle is stationary for extended periods during extreme high
ambient temperatures:
•Select the MAX A/C position.
Gas engines:If your vehicle is stationary for long periods of time in
high ambient temperature conditions, your climate control system may
automatically switch from fresh air mode to recirculation mode. This is
normal system operation as it provides protection of the air conditioning
compressor (and related parts). It is recommended that you allow the
system to remain in this mode if it has switched. The system reverts
back to fresh air mode when conditions allow.
For maximum cooling performance, turn the air distribution control to
MAX A/C.
To aid in side window defogging/demisting in cold weather:
1. Select Panel/Floor.
2. Select A/C.
3. Adjust the temperature control to maintain comfort.
4. Set the fan speed to the highest setting.
5. Direct the outer instrument panel vents toward the side windows.
6. To increase airflow to the outer instrument panel vents, close the
vents located in the middle of the instrument panel.
HEATED MIRRORS (IF EQUIPPED)
Note:Do not remove ice from the mirrors with a scraper or attempt to
readjust the mirror glass if it is frozen in place. These actions could
cause damage to the glass and mirrors.
Note:Do not clean the housing or glass of any mirror with harsh
abrasives, fuel or other petroleum-based cleaning products.
Both mirrors are heated to remove ice, mist and fog when the heated
mirror button is pressed.
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(Type 2)
HEATED SEATS (IF EQUIPPED)
WARNING:Persons who are unable to feel pain to the skin
because of advanced age, chronic illness, diabetes, spinal cord
injury, medication, alcohol use, exhaustion, or other physical conditions,
must exercise care when using the seat heater. The seat heater may
cause burns even at low temperatures, especially if used for long
periods of time. Do not place anything on the seat that insulates against
heat, such as a blanket or cushion, because this may cause the seat
heater to overheat. Do not puncture the seat with pins, needles, or
other pointed objects because this may damage the heating element
which may cause the seat heater to overheat. An overheated seat may
cause serious personal injury.
Note:Do not do the following:
•Place heavy objects on the seat.
•Operate the seat heater if water or any other liquid is spilled on the
seat. Allow the seat to dry thoroughly.
•Operate the heated seats unless the engine is running. Doing so could
drain your vehicle’s battery.
Press to cycle through the various heat settings and off.
Warmer settings are indicated by more indicator lights.
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