light DODGE RAM 2500 DIESEL 2009 4.G Repair Manual

User Defined ClockIf you wish to set the clock to a time different than the
system clock, you can manually adjust the time by
choosing the “User Defined Clock” option.
1. At theClock Setup screen highlight “Displayed
Clock: User Defined Clock”. 2. To increase the clock by hours, make sure “HR +” is
highlighted and press ENTER. Press ENTER again to
increase the clock by another hour. You will see on the
“User Defined Time” display the number of hours you
have increased the clock by.
3. To decrease the clock by one hour, use the Select
Encoder to highlight the “-” sign. Press ENTER. Press
ENTER again to decrease the clock by another hour.
4. To increase the clock by minutes, make sure “MIN +”
is highlighted and press ENTER. Press ENTER again to
increase the clock by another minute.
5. To decrease the clock by minutes, use the Select
Encoder to highlight the “-“ sign. Press ENTER. Press
ENTER again to decrease the clock by another minute.
6. Select “DONE” to exit from the clock setting mode.
Press ENTER to save your changes. If you press CAN-
CEL or NAV then your changes will not be saved.226 UNDERSTANDING YOUR INSTRUMENT PANEL

3. Do not apply paper or tape to the disc; avoid scratch-
ing the disc.
4. Do not use solvents such as benzene, thinner, cleaners,
or anti-static sprays.
5. Store the disc in its case after playing.
6. Do not expose the disc to direct sunlight.
7. Do not store the disc where temperatures may become
too high.
NOTE:If you experience difficulty in playing a particu-
lar disc, it may be damaged (i.e., scratched, reflective
coating removed, a hair, moisture or dew on the disc)
oversized, or have protection encoding. Try a known
good disc before considering disc player service.
RADIO OPERATION AND CELLULAR PHONESUnder certain conditions, the operation of a cellular
phone in your vehicle can cause erratic or noisy perfor-
mance from your radio. This condition may be lessened
or eliminated by relocating the cellular phone antenna.
This condition is not harmful to the radio. If your radio
performance does not satisfactorily “clear” by the repo-
sitioning of the antenna, it is recommended that the radio
volume be turned down or off during cellular phone
operation.
UNDERSTANDING YOUR INSTRUMENT PANEL 233
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Air Conditioning and Heating — If EquippedAir Conditioning Operation
To turn on the Air Conditioning, set the fan
control at any speed and press the snowflake
button located at the right of the control panel.
Conditioned air will be directed through the
outlets selected by the mode control. A light in the
snowflake button shows that the air conditioning is on.
Press the button a second time to turn the air condition-
ing off.
Slight changes in engine speed or power may be noticed
when the air conditioning compressor is on. This is a
normal occurrence as the compressor will cycle on and
off to maintain comfort and increase fuel economy.
Air Conditioning And Heating
UNDERSTANDING YOUR INSTRUMENT PANEL 237
4

edges of the instrument panel. The demisters also pro-
vide extra air ducts for circulation. They are in operation
whenever the Floor, Mix or Defrost modes are in use. To
remove frost from the side windows, it is best to use the
full defrost mode.
NOTE:When you turn off the engine you may hear a
hissing sound from under the hood for a short period of
time. This is a normal condition that occurs if the air
conditioning system has been on. It is not an indication of
a problem with the air conditioning system.Air Conditioning with Dual Zone Temperature
Control — If EquippedWith the Dual Zone Temperature Control System, each
front seat occupant can independently control the tem-
perature of air coming from the outlets on their side of
the vehicle.
Air Conditioning and Heating OperationTo turn on the Air Conditioning, set the fan control at any
speed and press the snowflake button located on the
control panel. Conditioned air will be directed through
the outlets selected by the mode control. A light in the
snowflake button shows that the air conditioning is on.
Press the button a second time to turn the air condition-
ing off.
Dual Zone Control Head
240 UNDERSTANDING YOUR INSTRUMENT PANEL

A/C Pushbutton
With the fan control in the ON posi-
tion, pushing the A/C button turns on
the air conditioning compressor. An
indicator light on the button shows
that the Air Conditioning compressor
is on. Conditioned air is now directed
through the mode outlets selected.
Pushing the button a second time turns the compressor
OFF.
Recirculation Pushbutton
Pushing the Recirculation button al-
lows interior air to recirculate continu-
ously in any position except defrost
and defrost/floor mode for rapid cool
down of the interior. See “Fast
Cooldown” later in this section.
Mode Control
The mode control allows you to
choose from several patterns of air
distribution.
NOTE: To improve your selection choices, the system
allows you to operate at intermediate positions between
the major modes. These intermediate positions are iden-
tified by the small dots and give an even blend of both
modes.
Panel
Outside air flows through the outlets located in the
instrument panel. These outlets can be adjusted to
direct the airflow.
UNDERSTANDING YOUR INSTRUMENT PANEL 241
4

Summer OperationAir 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. For proper coolant type,
refer to “Recommended Fluids and Genuine Parts” in
Section 7.
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 is
encountered, 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 OperationWhen 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 obstructions.
UNDERSTANDING YOUR INSTRUMENT PANEL 245
4

STARTING AND OPERATING
CONTENTSStarting Procedures .................... 252
▫ Normal Starting ..................... 252
▫ Automatic Transmission ............... 252
▫ If Engine Fails To Start ................ 252
▫ After Starting ....................... 254
 Engine Block Heater — If Equipped ........ 254
 Automatic Transmission ................. 254
▫ Automatic Transmission With Overdrive .... 255
Four-Wheel Drive Operation — If Equipped
... 260
▫ Manually Shifted Transfer Case Operating
Information/Precautions ............... 260
▫ Shifting Procedure - Manually Shifted
Transfer Case ....................... 263
▫ Transfer Case Position Indicator Light ...... 264
▫ Electronically Shifted Transfer Case
Operating Information/Precautions (Five
Position Switch) — If Equipped .......... 264
▫ Shifting Procedure — Electronically Shifted
Transfer Case ....................... 269
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▫Tire Pressures For High Speed Operation . . . 356
▫ Radial Ply Tires ..................... 357
▫ Tire Spinning ....................... 357
▫ Tread Wear Indicators ................. 358
▫ Life Of Tire ........................ 359
▫ Replacement Tires .................... 359
 Supplemental Tire Pressure Information —
If Equipped .......................... 360
 Tire Chains .......................... 361
 Snow Tires .......................... 363
 Tire Rotation Recommendations ........... 363
▫ Dual Rear Wheels .................... 365
 Tire Pressure Monitor System (TPMS) —
If Equipped .......................... 366 ▫
Tire Pressure Monitor System (TPMS) Tire
Light Load Inflation Switch Description –
If Equipped ........................ 369
▫
Tire Pressure Monitor System Components
. . 372
▫ General Information .................. 374
 Fuel Requirements ..................... 375
▫ Reformulated Gasoline ................ 375
▫ Gasoline/Oxygenate Blends ............. 376
▫ E-85 Usage In Non-Flex Fuel Vehicles ...... 376
▫ MMT In Gasoline .................... 377
▫ Materials Added To Fuel ............... 377
▫ Fuel System Cautions ................. 378
▫ Carbon Monoxide Warnings ............ 379
250 STARTING AND OPERATING

•
transmission has reached normal operating
temperature.
NOTE:
•
If the vehicle is started in extremely cold temperatures,
the transmission may not shift into Overdrive and will
automatically select the most desirable gear for opera-
tion at this temperature. Normal operation will re-
sume when the transmission fluid temperature has
risen to a suitable level. Refer to the “Note” under
“Torque Converter Clutch” in this section.
•
If the transmission temperature gets extremely hot, the
transmission will automatically select the most desir-
able gear for operation at this temperature. If the
transmission temperature becomes hot enough the
“Transmission Temperature Warning Light” may illu-
minate and the transmission may downshift out of Overdrive until the transmission cools down. After
cool down, the transmission will resume normal
operation.
The transmission will downshift from Overdrive to
DRIVE if the accelerator pedal is fully depressed at
vehicle speeds above approximately 35 mph (56 km/h).
When To Use “TOW HAUL” and “O/D OFF”
ModesWhen driving in hilly areas, towing a trailer, carrying a
heavy load, etc., and frequent transmission shifting oc-
curs, press the “TOW HAUL O/D OFF” button once to
select TOW HAUL.
258 STARTING AND OPERATING

This will improve performance and reduce the potential
for transmission overheating or failure due to excessive
shifting. When operating in “TOW HAUL” mode, 5th
gear (if equipped) is disabled and 2-3 and 3-4 shift
patterns are modified. Shifts into Overdrive (4th gear) are
allowed during steady cruise (for improved fueleconomy) and automatic closed-throttle downshifts to
3rd gear are performed (for improved braking) when
driving conditions warrant. Pressing the “TOW HAUL
O/D OFF” button a second time to select O/D OFF will
disable 4th and 5th gear completely, which should elimi-
nate any excessive transmission shifting.
The “TOW HAUL” or “O/D OFF” light will illuminate in
the instrument cluster to indicate when the switch has
been activated. Pressing the switch a third time restores
normal operation. If the “TOW HAUL” or “O/D OFF”
modes are desired, the button must be pressed each time
the engine is started.
Torque Converter ClutchA feature, designed to improve fuel economy, has been
included in the automatic transmission on your vehicle.
A clutch within the torque converter engages automati-
cally at calibrated speeds. This may result in a slightly
different feeling or response during normal operation in
Tow Haul O/D Off Switch
STARTING AND OPERATING 259
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