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{CAUTION:
If you apply any one of the air brake parking
controls while the vehicle is moving, the rig will
stop suddenly. If you are not ready for this, you or
others could be injured. Do not apply any one of
these controls while you are driving, unless you
have to make an emergency stop.
If the air pressure drops below 60 to 70 psi
(413 to 482 kPa), the primary brake warning light and
buzzer will come on. If the air pressure drops to
35 to 45 psi (241 to 310 kPa), the red trailer air supply
knob will automatically pop out and apply the spring
brakes on the trailer.
If the air pressure drops to 35 to 45 psi (241 to 310 kPa),
the yellow park brake knob will automatically pop out
and apply the spring brakes on the truck or tractor.
If you ever have a complete loss of air so that the air
brakes automatically apply, there is a way that the
tow operator can release the parking brakes to tow the
vehicle. SeeTowing Your Vehicle on page 4-23.
Parking Brake Burnish Procedure
All vehicles which have hydraulic brakes have a parking
brake. It is recommended that the parking brake be
burnished as part of the new vehicle break-in. The
parking brake will work best after it has been burnished
following these instructions:
1. Make sure that there is no other traffic around,
bring the vehicle speed up to 20 mph (32 km/h)
and apply the parking brake. Let the vehicle come
to a complete stop. Apply the base brakes and
disengage the parking brake.
2. Repeat the burnishing procedure in Step 1 a total
of 10 times.
3. Between stops, drive the vehicle about
2.5 miles (4 km).
Notice:Driving with the parking brake on can
damage the transmission and brake system parts.
Verify that the parking brake is fully released and the
brake warning light is off before driving.
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4. Fully set the parking brake.
5. Shift the transmission to P (Park) or N (Neutral).
6. Idle the engine. If you used the idling control knob to
increase the engine speed, restore it all the way to
the left to reduce the engine speed.
7. If the vehicle has a Power Take Off (PTO), turn the
PTO off. SeePower Take-Off (PTO) on page 2-30.
8. Press the DPF switch in the instrument panel
switchbank. SeeInstrument Panel Switchbank
on page 3-18. The green DPF indicator light comes
on, the exhaust gas control valve operates,
engine idle speed automatically increases, and DPF
cleaning begins. Do not leave the vehicle
unattended during manual cleaning.9. When both the green and the yellow or red DPF
indicator lights go off, cleaning is completed.
Manual cleaning is normally completed in about
30 minutes.
Under certain operating conditions, manual cleaning
might not be able to be performed, even if the soot level
in the DPF requires cleaning. This can occur because of
low coolant temperature, low battery voltage, high
exhaust temperature or immediately after starting the
vehicle. When manual cleaning is requested and coolant
temperature is low, an engine warm-up cycle is started.
The green indicator light will come on, the exhaust gas
control valve operates, and engine rpm increases to help
raise engine coolant temperature. When operating
conditions allow, cleaning will begin.
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Running the Vehicle While Parked
It is better not to park with the engine running. But if you
ever have to, here are some things to know.
{CAUTION:
Idling a vehicle in an enclosed area with poor
ventilation is dangerous. Engine exhaust may
enter the vehicle. Engine exhaust contains Carbon
Monoxide (CO) which cannot be seen or smelled.
It can cause unconsciousness and even death.
Never run the engine in an enclosed area that has
no fresh air ventilation. For more information, see
Engine Exhaust on page 2-45.
{CAUTION:
It can be dangerous to get out of the vehicle if the
automatic transmission shift lever is not fully in
P (Park) with the parking brake firmly set. The
vehicle can roll. Do not leave the vehicle when the
engine is running unless you have to. If you have
left the engine running, the vehicle can move
suddenly. You or others could be injured. To be
sure the vehicle will not move, even when it is on
fairly level ground, always set the parking brake
and move the automatic transmission shift lever to
P (Park), or the manual transmission shift lever to
Neutral.
Follow the proper steps to be sure the vehicle will
not move.
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The main components of the instrument panel are the following:
A.Outlet Adjustment on page 3-22.
B.Instrument Panel Cluster on page 3-24.
C. Shift Lever. SeeAutomatic Transmission Operation
on page 2-27orManual Transmission Operation
on page 2-28.
D. Air Brake Controls. SeeParking Brake (With
Hydraulic Brakes) on page 2-38orParking Brake
(With Air Brakes) on page 2-41.
E. Transfer Case Controls (If Equipped). See
Four-Wheel Drive on page 2-30. Air Filter Gage
(If Equipped). SeeAir Filter Restriction Indicator on
page 3-46.F. Auxiliary Gages. SeeWarning Lights, Gages, and
Indicators on page 3-23.
G.Exterior Lamps on page 3-14.
H.Turn Signal/Multifunction Lever on page 3-7.
I.Hazard Warning Flashers on page 3-6.
J.Audio System(s) on page 3-48.
K.Climate Control System on page 3-20.
L.Instrument Panel Switchbank on page 3-18.
M.Airbag Off Switch on page 1-55.
N.Accessory Power Outlet(s) on page 3-19.
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Page 133 of 376

Daytime Running Lamps (DRL)
Daytime Running Lamps (DRL) can make it easier for
others to see the front of your vehicle during the
day. Fully functional daytime running lamps are required
on all vehicles first sold in Canada.
The DRL system will make the headlamps come on
at reduced brightness when the following conditions
are met:
•The ignition is on,
•the exterior lamp control is off, and
•the parking brake is released.
When the DRL are on, only the headlamps will be on.
The taillamps, sidemarker, instrument panel lights,
and other lamps will not be on.When it gets dark, the
DRL indicator light is a
reminder to turn the
headlamps on.
When the headlamps are turned on, the other lamps
that come on with the headlamps will be on.
When the headlamps are turned off, the regular lamps
will go off, and the low-beam headlamps will change
to the reduced brightness of DRL.
To idle the vehicle with the DRL off, set the parking
brake. The DRL will stay off until the parking brake is
released.
Turn on the regular headlamp system when it is
needed.
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If the light comes on while driving, pull off the road and
stop carefully. The pedal might be harder to push or
might go the floor. It can take longer to stop. If the light
remains on, have the vehicle towed for service. See
Towing Your Vehicle on page 4-23for more information.
The brake warning light may come on, and the
warning tone may sound, when you are turning and
braking at the same time. This is normal. See “Hydraulic
Brake Systems” underBraking on page 4-4.
Parking Brake Warning Light
Your vehicle has a brake warning light. When the
ignition is on, this light will come on when you set your
parking brake. The light will stay on if your parking
brake does not release fully.
This light should also come on when you turn the
ignition key to START. If it does not come on then, have
it fixed so it will be ready to remind you if the parking
brake is applied or has not released fully.
Air Brake System Warning Light
Vehicles with air brake systems have a brake system
warning light on the instrument panel.
The low air warning light
should come on, as a
check, whenever you start
the engine.
However, it is designed to come on, and stay on, when
brake reservoir pressure has dropped below 60 psi
(410 kPa).
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When the warning light comes on while you are driving,
you should drive only as far as the nearest point of
safety and then stop the vehicle. Here is a very
important thing for you to know:
{CAUTION:
If the air brake system warning light comes on and
the warning tone sounds, the vehicle can stop
suddenly and without further warning. This is
because the parking brake will come on if the
pressure falls below 35 to 45 psi (240 to 310 kPa).
You or others could be injured. If the air brake
system warning light comes on and the warning
tone sounds, stop as soon as you can. You will
not know how quickly the system is losing
pressure, so be aware that the parking brake may
come on suddenly.
Antilock Brake System (ABS)
Warning Light
This light will come on
briefly when you start the
engine, then it will turn
off. This is normal.
If the light stays on, or comes on when you are driving,
your vehicle needs service. If the brake or low air warning
light is not on, you still have brakes, but you do not have
the antilock brake feature. If the brake and/or low air
warning light is on, you do not have antilock brakes and
there is a problem with your regular brakes. SeeBrake
System Warning Light on page 3-31andAntilock Brake
System (ABS) on page 4-5for more information.
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Audio System(s)
If the vehicle came without a radio, the wiring provisions
for a radio and an antenna were installed at the
assembly plant, so that if you want, a radio can be
installed at the dealer/retailer.
Determine which radio the vehicle has and read the
following pages to become familiar with its features.
{CAUTION:
Taking your eyes off the road for extended periods
could cause a crash resulting in injury or death to
you or others. Do not give extended attention to
entertainment tasks while driving.
This system provides access to many audio and non
audio listings.
To minimize taking your eyes off the road while driving,
do the following while the vehicle is parked:
•Become familiar with the operation and controls of
the audio system.
•Set up the tone, speaker adjustments, and preset
radio stations.
For more information, seeDefensive Driving on
page 4-2.Notice:Contact your dealer/retailer before adding
any equipment.
Adding audio or communication equipment could
interfere with the operation of the vehicle’s engine,
radio, or other systems, and could damage them.
Follow federal rules covering mobile radio and
telephone equipment.
Notice:The chime signals related to safety belts,
parking brake, and other functions of your vehicle
operate through the radio/entertainment system.
If that equipment is replaced or additional equipment
is added to your vehicle, the chimes may not
work. Make sure that replacement or additional
equipment is compatible with your vehicle before
installing it. SeeAccessories and Modifications
on page 5-3.
Setting the Clock
Press and hold the HR (down) or MIN (up) arrow for
two seconds. Then press HR until the correct hour
displays. Press and hold MIN until the correct minute
displays. The time can be set with the ignition on or off.
3-48