2006 DODGE RAM 1500 GAS engine

Circulation
The cab is designed with features to promote outside air
circulation. There are grilles in the cab back panel. These
are air exhausters that provide the means for regular
exchange of cab air.
Side window demisters direct air flow specifically to the
window glass to help prevent interior fogging of the
glass. They are located in the extreme outside upper
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.
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.
Rear Air Duct—Mega Cab Only
The rear seat will receive air flow in all modes except for
Defrost.
The rear air duct is designed to be pointed up when in
A/C mode, and pointed down in Heat mode.
Mega Cab Rear Air Duct
284 UNDERSTANDING YOUR INSTRUMENT PANEL

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.
286 UNDERSTANDING YOUR INSTRUMENT PANEL

STARTING AND OPERATING
CONTENTS

Ignition/Starter Switch ...................294
▫ Lock ..............................294
▫ Off ...............................294
▫ On................................294
▫ Start ..............................295
▫ ACC ..............................295
▫ Manual Transmission Key Release Button ....295
▫ Key Reminder .......................296

Starting Procedures .....................296 ▫
Manual Transmission ..................296
▫ Automatic Transmission ................296
▫ If Engine Fails To Start .................297
▫ Engine Block Heater — If Equipped ........297
▫ After Starting ........................298

Transmission Shifting ....................299
▫ Automatic Transmission With Overdrive .....299
▫ Manual Transmission ..................304

Four-Wheel- Drive Operation — If Equipped . . . 308
5

▫Manually Shifted Transfer Case Operating
Information/Precautions ................308
▫ Shifting Procedure - Manually Shifted
Transfer Case ........................311
▫ Transfer Case Reminder Light ............312
▫ Electronically Shifted Transfer Case Operating
Information/Precautions (5 Position Switch)—
If Equipped .........................312
▫ Shifting Procedure - Electronically Shifted
Transfer Case ........................318
▫ Electronically Shifted Transfer Case Operating
Information/Precautions (4 Position Switch)—
If Equipped .........................320
▫ Shifting Procedure - Electronically Shifted
Transfer Case ........................325

Limited-Slip Differential — If Equipped .......327

Parking Brake .........................328

Brake System ..........................330
▫ 3500 Dual Rear Wheel Models Only ........330
▫ Brake Noise .........................330
▫ Rear Wheel Anti-Lock Brake System —
RWAL .............................331
▫ Four-Wheel Anti-Lock Brake System —
If Equipped .........................331

Power Steering ........................333

Multi Displacement System (MDS) -
5.7L Engine Only .......................334

Tire Safety Information ...................335
▫ Tire Markings ........................335
▫ Tire Identification Number (TIN) ..........338
290 STARTING AND OPERATING

Adding Fuel ..........................360
▫ Fuel Filler Cap (Gas Cap) ...............361

Flexible Fuel— (Fleet Vehicles Only) .........363
▫ E-85 General Information ................363
▫ Ethanol Fuel (E-85) ....................363
▫ Fuel Requirements ....................363
▫ Selection Of Engine Oil For Flexible Fuel Vehicles
(E-85) And Gasoline Vehicles .............364
▫ Starting ............................364
▫ Cruising Range .......................365
▫ Replacement Parts .....................365
▫ Maintenance .........................365

Catalytic Converter .....................365

Vehicle Loading ........................367
▫ Certification Label .....................367

Trailer Towing .........................370
▫ Common Towing Definitions .............370
▫ Trailer Hitch Classification ...............372
▫ Trailer Towing Weights
(Maximum Trailer Weight Ratings) .........373
▫ Trailer And Tongue Weight ..............373
▫ Towing Requirements ..................375
▫ Towing Tips .........................379
▫ Trailer Towing Mirrors — If Equipped ......381

Snowplow ............................382
▫ Dodge Ram 1500 Models ................382
292 STARTING AND OPERATING

IGNITION/STARTER SWITCH LOCK
Locks the automatic transmission shift control into the
PARK position. It also engages the steering wheel lock (if
equipped) when the steering wheel is turned.
NOTE: This vehicle is equipped with a transmission
shift interlocking system. The brake pedal must be
depressed to shift out of Park (P).
OFF
Unlocks the steering wheel (if equipped with locking
wheel) and the automatic transmission shift control with
engine off.
ON
This is the normal running position.Ignition Switch Positions
294 STARTING AND OPERATING

START
Starts the engine. When the engine starts, release the key.
The ignition key will return to the ON position for
normal driving.
ACC
Allows the electrical accessories to be used when the
engine is not running.
Manual Transmission Key Release Button
To remove the key on vehicles equipped with manual
transmissions, turn the key to the Lock position and press
the button to remove the ignition key.
Ignition Key Release Button
STARTING AND OPERATING 295
5

Key Reminder
An alarm will sound to remind you if the key is left in the
ignition and the driver’s door is opened.
STARTING PROCEDURES
The starter should not be operated for more than 15-
second intervals. Waiting a few seconds between such
intervals will protect the starter from overheating.
Manual Transmission
Apply the parking brake, place the gearshift control lever
in NEUTRAL and depress the clutch pedal to the floor
before starting the vehicle. This vehicle is equipped with
a clutch interlocking ignition system. It will not start
unless the clutch is fully depressed.
Automatic Transmission
Start the engine with the selector lever in NEUTRAL or
PARK position. Apply the brake before shifting to any
driving range.
Normal Starting of either a warm or cold engine is
obtained without pumping or depressing the accelerator
pedal. Turn the key to the START position and release
when the engine starts. If the engine fails to start within
10 seconds, turn the key to the OFF position, wait 5
seconds, then repeat the starting procedure.
NOTE: This vehicle is equipped with a transmission
shift interlocking system. The brake pedal must be
depressed to shift out of Park (P).
296 STARTING AND OPERATING