2008 DODGE RAM 2500 POWER WAGON Owners Manual

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.
Operating Tips
Fast Cooldown
For a fast cooldown, turn the blower fan rotary knob to
the extreme right position, turn the mode control to the
panel fresh position, press the snowflake button to turn
on the air conditioning, and drive with the windows
open for the first few minutes. Once the hot air has been
expelled, close the windows and press the Recirculation
push-button. When a comfortable condition has been
reached, choose a mode position and adjust the tempera-
ture control slide and blower speed as necessary tomaintain comfort. For high humidity conditions it may
be necessary to remain in the Recirculation mode to
maintain comfort.
Window Fogging
Windows will fog on the inside when the humidity inside
the vehicle is high. This often occurs in mild or cool
temperatures when it's rainy or humid. In most cases
turning on the Air-conditioning (pressing the snowflake
button) will clear the fog. Adjust the temperature control,
air direction and blower speed to maintain comfort.
As the temperature gets colder it may be necessary to
direct air onto the windshield by using MIX Mode
position on the control. Adjust the temperature control
and blower speed to maintain comfort. Higher blower
speeds will reduce fogging. Interior fogging on the
windshield can be quickly removed by selecting the
defrost mode.
UNDERSTANDING YOUR INSTRUMENT PANEL 249
4

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 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 intoNEUTRAL 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.
250 UNDERSTANDING YOUR INSTRUMENT PANEL

Operating Tips Chart
UNDERSTANDING YOUR INSTRUMENT PANEL 251
4

STARTING AND OPERATING
CONTENTS
mStarting Procedures ± Gas Engines...........258
NManual Transmission ± If Equipped........258
NAutomatic Transmission ± If Equipped......258
NNormal Starting......................259
NIf Engine Fails To Start.................259
NAfter Starting........................261
mEngine Block Heater Ð If Equipped.........261
mAutomatic Transmission..................262
NAutomatic Transmission With Overdrive.....262mManual Transmission....................268
NManual Transmission Ð 6 Speed (G56)......269
NRecommended Vehicle Shift Speeds........269
NDownshifting ± All Manual Transmissions....270
mFour-Wheel- Drive Operation..............271
NManually Shifted Transfer Case Operating
Information/Precautions................271
NShifting Procedure - Manually Shifted
Transfer Case........................273
NTransfer Case Reminder Light............274
5

mLimited-Slip Differential Ð If Equipped.......275
mDriving On Slippery Surfaces..............276
mAxle Locker System.....................276
mStabilizer/Sway Bar System...............279
mPower Wagon ± Safe Off-Road Driving.......281
NOff-Road Driving Tips And Vehicle
Characteristics.......................281
NDriving In Snow, Mud And Sand..........286
NCrossing Obstacles (Rocks And Other High
Points).............................288
NHill Climbing........................291
NDriving Through Water.................294
NAiring Down For Off-Road Driving........296
NVehicle Recovery......................297NAfter Driving Off-Road.................301
mWinch Usage ± If Equipped...............302
NThings To Know Before Using Your Winch . . . 302
NUnderstanding The Features Of Your Winch . . 304
NWinch Accessories.....................306
NOperating Your Winch..................307
NRigging Techniques....................318
mParking Brake.........................321
mBrake System..........................322
NBrake Noise.........................323
NFour-Wheel Anti-Lock Brake System (ABS) ±
If Equipped.........................323
mPower Steering........................325
254 STARTING AND OPERATING

mMulti Displacement System (MDS) Ð 5.7L Engine
Only................................326
mTire Safety Information...................326
NTire Markings........................326
NTire Identification Number (TIN)..........330
NTire Loading And Tire Pressure...........331
mTires Ð General Information...............335
NTire Pressure.........................335
NTire Inflation Pressures.................336
NRadial-Ply Tires......................338
NCompact Spare Tire Ð If Equipped.........339
NLimited Use Spare Ð If Equipped.........339
NTire Spinning........................340NTread Wear Indicators..................341
NLife Of Tire.........................341
NReplacement Tires.....................342
NAlignment And Balance.................343
mSupplemental Tire Pressure Information Ð
If Equipped...........................344
mTire Chains...........................344
mSnow Tires...........................345
mTire Rotation Recommendations............346
mTire Pressure Monitor System (TPMS) Ð
If Equipped...........................347
NTire Pressure Monitor System (TPMS) ªLight
Loadº Reset Switch Description ±
If Equipped.........................350
STARTING AND OPERATING 255
5

NTire Pressure Monitor System Components . . . 355
NGeneral Information...................357
mFuel Requirements......................357
NReformulated Gasoline.................358
NGasoline/Oxygenate Blends..............358
NMMT In Gasoline.....................359
NSulfur In Gasoline.....................359
NMaterials Added To Fuel................360
NFuel System Cautions..................360
NCarbon Monoxide Warnings..............361
mAdding Fuel..........................362
NAdding Fuel (Gas Engines)..............362
mVehicle Loading........................364NCertification Label.....................364
mTrailer Towing.........................367
NCommon Towing Definitions.............367
NTrailer Hitch Classification...............371
NTrailer Towing Weights (Maximum Trailer
Weight Ratings)......................372
NTrailer And Tongue Weight..............372
NTowing Requirements..................373
NTowing Tips.........................380
NTrailer Towing Mirrors Ð If Equipped......381
mSnowplow............................383
mRecreational Towing Ð 4±Wheel Drive Vehicles
(Behind Motorhome, Etc.).................384
256 STARTING AND OPERATING