2005 DODGE RAM 2500 DIESEL trailer

reserve fuel capacity, which corresponds to approxi-
mately 8% of tank volume. This reserve capacity was put
in place to prevent the likelihood of customers running
out of fuel when operating at maximum load conditions
in areas where there aren’t many gas stations. (See page
130 for more information.)
Ram fuel tank volumes are as follows:
•34 gallons - 2500/3500 short box models
•35 gallons - 2500/3500 long box models
28. Transmission Oil Temperature Warning Light
(Automatic Transmissions Only)
This light indicates that there is excessive trans-
mission fluid temperature that might occur
with severe usage such as trailer towing. It may
also occur when operating the vehicle in a high
torque converter slip condition, such as 4-wheel-drive
operation (e.g. snow plowing, off- road operation). If thislight comes on, stop the vehicle and run the engine at idle
or faster, with the transmission in NEUTRAL until the
light goes off.
29. Check Gages
This light illuminates when the Voltmeter, Engine
Oil Pressure or Engine Coolant Temperature
gages indicate a reading either too high or too low.
Examine the gages carefully, and follow the instructions
above for each indicated problem.
NOTE:When the ignition switch is turned to OFF, the
Fuel Gage, Voltmeter, Oil Pressure and Engine Coolant
Temperature gages may not show accurate readings.
When the engine is not running, turn the ignition switch
to ON to obtain accurate readings.
UNDERSTANDING YOUR INSTRUMENT PANEL 169
4

speeds will reduce fogging. Interior fogging on the
windshield can be quickly removed by selecting the
defrost mode.
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 isencountered, 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.
216 UNDERSTANDING YOUR INSTRUMENT PANEL

▫Tire Inflation Pressures.................269
▫Radial-Ply Tires......................271
▫Compact Spare Tire — If Equipped.........272
▫Limited Use Spare — If Equipped.........273
▫Tire Spinning........................273
▫Tread Wear Indicators..................274
▫Replacement Tires.....................275
▫Alignment And Balance.................276

Supplemental Tire Pressure Information.......276

Tire Chains...........................276

Snow Tires...........................278

Tire Rotation Recommendations............279
▫Dual Rear Wheels.....................280

Engine Runaway.......................281
Fuel Requirements......................281
▫Adding Fuel.........................282
▫Bulk Fuel Storage.....................284
▫Fuel Specifications....................284

Vehicle Loading........................286
▫Certification Label.....................286

Trailer Towing.........................289
▫Definitions..........................289
▫Axle Lubricant And Trailer Towing.........291
▫Trailer Towing Recommendations..........291
▫Trailer Towing — Hitches...............292
▫Connecting Trailer Lighting And Electric
Trailer Brakes........................293
▫Trailer Weight And Trailer Tongue Weight....294
STARTING AND OPERATING 221
5

▫Trailer Towing Information (Maximum Trailer
Weight Ratings)......................295
▫Trailer Towing Mirrors — If Equipped......296
▫Cooling System Tips — Trailer Towing......297
▫Automatic Transmission Oil Temperature
Warning Light.......................298
▫Towing With An Automatic Transmission....298

Snowplow............................298
▫Before Plowing.......................299
▫Snowplow Prep Package Model Availability . . 299
▫Over The Road Operation With Snowplow
Attached...........................300
▫Methods For Removing Snow............301
▫Operating Tips.......................301
▫General Maintenance...................301
Recreational Towing — 4 Wheel Drive Vehicles
(Behind Motorhome, Etc.).................302
▫Recreational Towing – 2 Wheel Drive
Models............................302
▫Recreational Towing Procedure — Manual
Shift Transfer Case — If Equipped.........303
▫Returning To Normal Operation — Manual
Shift Transfer Case....................305
▫Recreational Towing Procedure — Electronic
Shift Transfer Case — If Equipped.........306
▫Returning To Normal Operation — Electronic
Shift Transfer Case....................308

Driving Off-Road.......................310

Traction.............................311

Engine Data Plate......................311
222 STARTING AND OPERATING

When To Use “TOW/HAUL” Mode
When driving in hilly areas, towing a trailer, carrying a
heavy load, etc., and frequent transmission shifting oc-
curs, press the “TOW/HAUL” button. 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 (ifequipped) is disabled and 2-3 and 3-4 shift patterns are
modified. Shifts into Overdrive (4th gear) are allowed
during steady cruise (for improved fuel economy) and
automatic closed-throttle downshifts to 3rd gear (for
improved braking) will occur during steady braking.
The “TOW/HAUL” light will illuminate in the instru-
ment cluster to indicate when the switch has been
activated. Pressing the switch a second time restores
normal operation. If the “TOW/HAUL” mode is desired,
the button must be pressed each time the engine is
started.
When To Lock Out Overdrive
When driving in hilly areas, towing a trailer, carrying a
heavy load, etc., and frequent 4–3–4 transmission shifting
occurs, press the “TOW/HAUL” button. This will im-
prove performance and reduce the potential for transmis-
sion overheating or failure due to excessive shifting.
240 STARTING AND OPERATING

Fully depress the clutch pedal before shifting gears. As
you release the clutch pedal, lightly depress the accelera-
tor pedal. When launching a stationary vehicle, keep the
engine speed low until the clutch is fully engaged.
This transmission has a “creeper” 1st gear which should
be used to start from a standing position when carrying
a payload or towing a trailer. Damage to the clutch can
result from starting in 2nd or 3rd gear with a loaded
vehicle. Use each gear in numerical order – do not skip a
gear.
For steady highway driving with light acceleration, 6th
gear is recommended. When shifting from 4th to 5th gear,
apply side effort away and forward without pushing
hard enough to engage Reverse gear. Shifting from 5th to
6th requires the same side effort or the lever will return to
center resulting in a shift into 4th gear and damage the
transmission, clutch, or engine.You should use low gear when starting from a standing
position if under a heavy load.
To shift into Reverse, come to a complete stop. Depress
the clutch and pause briefly to allow the gear train to
stop. Move the shift lever from the Neutral position
straight across and up into Reverse.
Never drive with your foot resting on the clutch pedal, or
attempt to hold the vehicle on a hill with the clutch pedal
partially engaged, as this will cause abnormal wear on
the clutch.
Downshifting
Moving from a high gear down to a lower gear is
recommended to preserve brakes when driving down
steep hills. In addition, downshifting at the right time
provides better acceleration when you desire to resume
speed. Downshift progressively. Do not skip gears to
242 STARTING AND OPERATING

Tire and Loading Information Placard
This placard tells you important information about the:
1) number of people that can be carried in the vehicle
2) the total weight your vehicle can carry
3) the tire size designed for your vehicle
4) the cold tire inflation pressures for the front, rear
and spare tires.
Loading
The vehicle maximum load on the tire must not exceed
the load carrying capacity of the tire on your vehicle. You
will not exceed the tire’s load carrying capacity if you
adhere to the loading conditions, tire size and cold tire
inflation pressures specified on the Tire and Loading
Information placard and the Vehicle Loading section of
this manual.
NOTE:Under a maximum loaded vehicle condition,
gross axle weight ratings (GAWR’s) for the front and rear
axles must not be exceeded. For further information on
GAWR’s, vehicle loading and trailer towing, see the
Vehicle Loading section of this manual.
To determine the maximum loading conditions of your
vehicle, locate the statement “The combined weight of
occupants and cargo should never exceed XXX kg or XXX
lbs.” on the Tire and Loading Information placard. The
Tire and Loading Information
STARTING AND OPERATING 265
5

combined weight of occupants, cargo/luggage and
trailer tongue weight (if applicable) should never exceed
the weight referenced here.
Steps for Determining Correct Load Limit
1. Locate the statement “The combined weight of occu-
pants and cargo should never exceed XXX pounds” on
your vehicle’s placard.
2. Determine the combined weight of the driver and
passengers that will be riding in your vehicle.
3. Subtract the combined weight of the driver and pas-
sengers from XXX kilograms or XXX pounds.
4. The resulting figure equals the available amount of
cargo and luggage load capacity. For example, if “XXX”
amount equals 1400 lbs. and there will be five 150 lb.
passengers in your vehicle, the amount of available cargo
and luggage load capacity is 650 lb. (since 5 x 150 = 750,
and 1400 – 750 = 650 lb.)5. Determine the combined weight of luggage and cargo
being loaded on the vehicle. That weight may not safely
exceed the available cargo and luggage load capacity
calculated in step 4.
6. If your vehicle will be towing a trailer, load from your
trailer will be transferred to your vehicle. Consult this
manual to determine how this reduces the available
cargo and luggage load capacity of your vehicle.
NOTE:The following table shows examples on how to
calculate total load, cargo/luggage and towing capacities
of your vehicle with varying seating configurations and
number and size of occupants. This table is for illustra-
tion purposes only and may not be accurate for the
seating and load carry capacity of your vehicle.
NOTE:For the following example the combined weight
of occupants and cargo should never exceed 865 lbs. (392
Kg).
266 STARTING AND OPERATING