2007 RAM CHASSIS CAB window

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 to
maintain 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.240 UNDERSTANDING YOUR INSTRUMENT PANEL

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 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 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. UNDERSTANDING YOUR INSTRUMENT PANEL 241
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WARNING!• Always fully apply the parking brake when leav-
ing your vehicle, or it may roll and cause damage
or injury. Also be certain to leave an automatic
transmission in Park, a manual transmission in
Reverse or First gear. Failure to do so may allow
the vehicle to roll and cause damage or injury.
• Never leave children alone in a vehicle. Leaving
children in a vehicle unattended is dangerous for
a number of reasons. A child or others could be
seriously or fatally injured. Don’t leave the keys
in the ignition. A child could operate power
windows, other controls, or move the vehicle.
• Be sure the parking brake is fully disengaged
before driving, failure to do so can lead to brake
problems due to excessive heating of the rear
brakes. When parking on a hill, turn the front wheels toward the
curb on a downhill grade and away from the curb on an
uphill grade.
The parking brake should always be applied whenever
the driver is not in the vehicle.
BRAKE SYSTEM
If power assist is lost for any reason (for example,
repeated brake applications with the engine off), the
brakes will still function. However, you will experience a
substantial increase in braking effort to stop the vehicle.
If either the front or rear hydraulic systems lose normal
capability, the remaining system will still function with
some loss of overall braking effectiveness. This will be
evident by increased pedal travel during application,
greater pedal force required to slow or stop, and activa-
tion of the BRAKE warning lamp and the ABS lamp (if
equipped) during brake use. STARTING AND OPERATING 301
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engine running for an extended period. If the vehicle is
stopped in an open area with the engine running for
more than a short period, adjust the ventilation system
to force fresh, outside air into the vehicle.
• Guard against carbon monoxide with proper mainte-
nance. Have the exhaust system inspected every time
the vehicle is raised. Have any abnormal conditions
repaired promptly. Until repaired, drive with all side
windows fully open.
• Keep the liftgate closed when driving your vehicle to
prevent carbon monoxide and other poisonous ex-
haust gases from entering the vehicle.
Fuel Requirements (6.7L Diesel Engines)
Use good quality diesel fuel from a reputable supplier in
your vehicle. Federal law requires that you must fuel this
vehicle with Ultra Low Sulfur Highway Diesel fuel (15
ppm Sulfur maximum) and prohibits the use of Low
Sulfur Highway Diesel fuel (500 ppm Sulfur maximum) to avoid damage to the emissions control system. For
most year-round service, No. 2 diesel fuel meeting ASTM
specification D-975 Grade S15 will provide good perfor-
mance. If the vehicle is exposed to extreme cold (below
20°F or -7°C), or is required to operate at colder-than-
normal conditions for prolonged periods, use climatized
No. 2 diesel fuel or dilute the No. 2 diesel fuel with 50%
No. 1 diesel fuel. This will provide better protection from
fuel gelling or wax-plugging of the fuel filters.
WARNING!Do not use alcohol or gasoline as a fuel blending
agent. They can be unstable under certain conditions
and hazardous or explosive when mixed with diesel
fuel. STARTING AND OPERATING 331
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Glass Surfaces
All glass surfaces should be cleaned on a regular basis
with Mopar  Glass Cleaner or any commercial
household-type glass cleaner. Never use an abrasive type
cleaner. Use caution when cleaning the inside rear win-
dow equipped with electric defrosters or the right rear
quarter window equipped with the radio antenna. Do
not use scrapers or other sharp instruments which may
scratch the elements. When cleaning the rear view mirror,
spray cleaner on the towel or rag that you are using. Do
not spray cleaner directly on the mirror.
Cleaning Plastic Instrument Cluster Lenses
The lenses in front of the instruments in this vehicle are
molded in clear plastic. When cleaning the lenses, care
must be taken to avoid scratching the plastic. 1. Clean with a wet soft rag. A mild soap solution may be
used, but do not use high alcohol content or abrasive
cleaners. If soap is used, wipe clean with a clean damp
rag.
2. Dry with a soft tissue.
Seat Belt Maintenance
Do not bleach, dye or clean the belts with chemical
solvents or abrasive cleaners. This will weaken the fabric.
Sun damage can also weaken the fabric.
If the belts need cleaning, use a mild soap solution or
lukewarm water. Do not remove the belts from the car to
wash them.
Replace the belts if they appear frayed or worn or if the
buckles do not work properly.
Dry with a soft tissue.456 MAINTAINING YOUR VEHICLE

Selection of Coolant (Antifreeze) ......... 428,469
Temperature Gauge ..................... 174
Cruise Control (Speed Control) .............. 132
CupHolder ............................ 152
Customer Assistance ..................... 504
Data Recorder, Event ...................... 57
Daytime Running Lights ................... 124
Dealer Service .......................... 395
Defroster, Rear Window ................. 86,160
Defroster, Windshield ................ 76, 232,234
Delay (Intermittent) Wipers ................. 128
Diesel Exhaust Brake ..................... 265
Diesel Fuel ............................ 331
Diesel Fuel Requirements .................. 331
Bulk Storage of ........................ 336
Differential, Limited-Slip .................. 295
Dipsticks .............................. 398
Power Steering ........................ 421 Disc Brakes ............................ 434
Disposal .............................. 405
Engine Oil ........................... 405
Used Coolant (Antifreeze) ................ 430
Door Ajar ............................. 180
Door Locks ............................. 26
Door Locks, Automatic .................... 145
Downshifting ........................ 281,282
Draining Fuel/Water Separator Filter .......... 410
DriveBelts ............................ 406
Dual Rear Wheels ..................... 326,378
DVD Player (Video Entertainment System) ...... 222
Electric Rear Window Defrost ............. 86,160
Electrical Power Outlets ................... 149
Electronic Speed Control (Cruise Control) ...... 132
Electronic Vehicle Information Center (EVIC) .... 142
Electronically Shifted Transfer Case ........... 288
Emergency Brake ........................ 299 INDEX 517
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Seats ............................... 116
Sliding Rear Window ................. 33,160
Steering .......................... 304,421
Take-Off Adapter ...................... 296
Take-Off Operation ..................... 296
Windows ............................. 32
Power Steering Fluid ..................... 471
Pregnant Women and Seat Belts .............. 47
Pretensioners
Seat Belts ............................. 45
Programmable Electronic Features ............ 145
PTO (Power Take-Off) .................... 296
Radial Ply Tires ......................... 317
Radiator Cap (Coolant Pressure Cap) .......... 429
Radio Broadcast Signals ................... 181
Radio, Navigation ....................... 218
Radio Operation ................... 182,190,204
Radio Remote Controls .................... 226 Radio, Satellite ....................... 219,222
Radio (Sound Systems) .............. 182,190,204
Rear Axle (Differential) ................. 436,437
Rear Wheel Bearings ..................... 445
Rear Window Features .................... 160
Rear Window, Sliding ................... 34,161
Reclining Front Seats ..................... 114
Recorder, Event Data ...................... 57
Recreational Towing ...................... 360
Shifting into Transfer Case Neutral (N) .... 361,363
Shifting out of Transfer Case Neutral (N) . . . 362,365
Reformulated Gasoline .................... 328
Refrigerant ............................ 421
Reminder, Seat Belt ....................... 46
Remote Keyless Entry (RKE) ................. 20
Remote Sound System (Radio) Controls ........ 226
Remote Starting System .................... 25
Replacement Tires ....................... 321
Reporting Safety Defects ................... 507 INDEX 525
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Service Manuals ........................ 508
Setting the Clock ............. 181,185,192,205,219
Settings, Personal ........................ 145
Shifting ............................... 266
Manual Transmission ................... 279
Transfer Case ......................... 286
Transfer Case, Shifting into Transfer Case
Neutral (N) ......................... 361,363
Transfer Case, Shifting out of Transfer Case
Neutral (N) ......................... 362,365
Shoulder Belt Upper Anchorage .............. 43
Shoulder Belts ........................... 35
Signals, Turn ........................... 125
Sliding Rear Window
Power ............................ 33,160
Slippery Surfaces, Driving On ............... 298
Snow Chains (Tire Chains) ................. 323
Snow Plow ............................ 355
Snow Tires ............................ 324 Soot Filter ............................. 415
Spare Tire .......................... 318,319
Spark Plugs ............................ 413
Speed Control (Cruise Control) .............. 132
Speedometer ........................... 173
Starting ............................ 248,251
Automatic Transmission ............... 248,252
Engine Block Heater ................. 252,259
Engine Fails to Start .................... 249
Manual Transmission ................. 248,252
Remote .............................. 25
Starting Procedures ...................... 251
Starting Procedures (Diesel Engines) .......... 251
Starting Procedures (Gas Engines) ............ 248
Steering
Linkage ............................. 422
Power ........................... 304,421
Wheel Lock ........................... 15
Wheel, Tilt ........................... 129 INDEX 527
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