ECU DODGE RAM 2500 DIESEL 2007 3.G Owner's Manual

CAUTION!
Do not leave your vehicle unattended with the
engine running as you would not be able to react to
the temperature indicator if the engine overheats.
NOTE: Engine idle speed will automatically increase to
1000 rpm at elevated coolant temperatures to improve
engine cooling.
NOTE: If the gauge pointer moves to either extreme of
the gauge, the “Check Gages” indicator will illuminate
and a single chime will sound.
14. Security Light
The light will flash rapidly for approximately 16 seconds
when the vehicle theft alarm is arming. The light will
flash at a slower rate after the alarm is set. The security
light will also come on for about two seconds when the
ignition is first turned ON. 15. Transmission Range Indicator (Automatic
Transmissions Only)
When the gear selector lever is moved, this indicator
shows the automatic transmission gear range selected.
16. Odometer/Trip Odometer
The odometer shows the total distance the vehicle has
been driven.
If the odometer reading is changed during repair or
replacement, be sure to keep a record of the reading
before and after the service so that the correct mileage can
be determined.
The trip odometer shows individual trip mileage. To
toggle between the odometer and the trip odometer,
press the Odometer/Trip Odometer Button. To reset the
Trip Odometer, press and hold the button while in trip
mode, until the Trip Odometer resets.
182 UNDERSTANDING YOUR INSTRUMENT PANEL

then be determined separately to be sure that the load is
properly distributed over front and rear axle. Weighing
the vehicle may show that the GAWR of either the front
or rear axles has been exceeded but the total load is
within the specified GVWR. If so, weight must be shifted
from front to rear or rear to front as appropriate until the
specified weight limitations are met. Store the heavier
items down low and be sure that the weight is distributed
equally. Stow all loose items securely before driving.
Improper weight distributions can have an adverse effect
on the way your vehicle steers and handles and the way
the brakes operate.CAUTION!
Do not load your vehicle any heavier than the
GVWR or the maximum front and rear GAWR. If
you do, parts on your vehicle can break, or it can
change the way your vehicle handles. This could
cause you to lose control. Also overloading can
shorten the life of your vehicle.
An EXAMPLE of a loaded vehicle is shown in the
following chart. Note that neither GVWR nor GAWR
capabilities are exceeded. Overloading can cause poten-
tial safety hazards and shorten service life.
STARTING AND OPERATING 325
5

WARNING!
Improper towing can lead to an injury accident.
Follow these guidelines to make your trailer towing
as safe as possible:
Make certain that the load is secured in the trailer
and will not shift during travel. When trailering
cargo that is not fully secured, dynamic load shifts
can occur that may be difficult for the driver to
control. You could lose control of your vehicle and
have an accident.
•When hauling cargo or towing a trailer, do not over-
load your vehicle or trailer. Overloading can cause a
loss of control, poor performance or damage to brakes,
axle, engine, transmission, steering, suspension, chas-
sis structure or tires.
•Safety chains must always be used between your
vehicle and trailer. Always connect the chains to the
frame or hook retainers of the vehicle hitch. Cross the
chains under the trailer tongue and allow enough
slack for turning corners.
•Vehicles with trailers should not be parked on a grade.
When parking, apply the parking brake on the tow
vehicle. Put the tow vehicle automatic transmission in
P for Park. With a manual transmission, shift the
transmission into reverse. And with four-wheel-drive
vehicles, make sure the transfer case is not in neutral.
Always, block or chockthe trailer wheels.
•GCWR must not be exceeded.
•Total weight must be distributed between the tow
vehicle and the trailer such that the following four
ratings are not exceeded:
1. GVWR
334 STARTING AND OPERATING

•Do not overfill the coolant recovery bottle.
•Check coolant freeze point in the radiator and in the
coolant recovery bottle. If antifreeze needs to be
added, contents of coolant recovery bottle must also be
protected against freezing.
•If frequent coolant additions are required, or if the
level in the coolant recovery bottle does not drop when
the engine cools, the cooling system should be pres-
sure tested for leaks.
•Maintain coolant concentration at 50% HOAT engine
coolant (minimum) and distilled water for proper
corrosion protection of your engine which contains
aluminum components.
•Make sure that the radiator and coolant recovery
bottle overflow hoses are not kinked or obstructed.
•Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean, also.
•Do not change the thermostat for summer or winter
operation. If replacement is ever necessary, install
ONLY the correct type thermostat. Other designs may
result in unsatisfactory coolant performance, poor gas
mileage, and increased emissions.
Fan
Inspection
Check the fan for cracks and bent or broken blades. If any
of these conditions exist, you must replace the fan. Make
sure it is securely mounted.
NOTE: This service procedure must be performed by a
trained service technician. Make arrangements with your
authorized Dodge Truck Dealer for this inspection.
MAINTAINING YOUR VEHICLE 407
7

Charge Air Cooler (Inter-Cooler)
The charge air cooler is positioned between the radiator
and the air conditioner condenser. Air enters the engine
through the air cleaner and passes through the turbo-
charger where it is pressurized. This pressurized air
rapidly reaches high temperature. The air is then directed
through a hose to the charge air cooler and through
another hose to the intake manifold of the engine. The air
entering the engine has been cooled by about 50 to 100
degrees Fahrenheit. This cooling process enables more
efficient burning of fuel resulting in fewer emissions.
To guarantee optimum performance of the system, keep
the surfaces of the charge air cooler, condenser and
radiator clean and free of debris. Periodically check the
hoses leading to and from the charge air cooler for cracks
or loose clamps resulting in loss of pressure and reduced
engine performance.
Hoses And Vacuum/Vapor Harnesses
Inspect surfaces of hoses and nylon tubing for evidence
of heat and mechanical damage. Hard or soft spots,
brittle rubber, cracking, tears, cuts, abrasions, and exces-
sive swelling indicate deterioration of the rubber.
Pay particular attention to those hoses nearest to high
heat sources such as the exhaust manifold. Inspect hose
routing to be sure hoses do not come in contact with any
heat source or moving component which may cause heat
damage or mechanical wear.
Insure nylon tubing in these areas has not melted or
collapsed.
Inspect all hose connections such as clamps and cou-
plings to make sure they are secure and no leaks are
present.
Components should be replaced immediately if there is
any evidence of wear or damage that could cause failure.
408 MAINTAINING YOUR VEHICLE

Adding Fuel........................... 320
Adjustable Pedals ....................... 132
Air Cleaner, Engine (Engine Air Cleaner Filter) . 389,418
Air Conditioner Maintenance ............... 396
Air Conditioning Refrigerant .............396,397
Air Conditioning System ................237,396
Air Conditioning System, Zone Control ........ 240
Air Filter .............................. 389
Air Pressure, Tires .................... 305,313
Airbag .............................. 45,51
Airbag Light ......................... 74,180
Airbag On/Off Switch ..................... 51
Airbag, Side ............................ 54
Alarm, Out of Park Sense .................. 273
Alarm, Panic ............................ 22
Alarm (Security Alarm) .................18,182
Alarm System (Security Alarm) ............... 18
Alignment and Balance ................... 312
Alterations/Modifications, Vehicle ............. 8 Antenna, Satellite Radio
................... 230
Antifreeze (Engine Coolant) ..............403,404
Capacities ........................... 445
Anti-Lock Warning Light ...............184,294
Anti-Theft Security Alarm (Theft Alarm) ........ 18
Anti-Theft System ..................... 18,182
Appearance Care ........................ 422
Ashtray ............................... 154
Automatic Dimming Mirror ................. 83
Automatic Transaxle ...................... 12
Interlock System ........................ 15
Automatic Transmission ................... 413
Adding Fluid ......................... 413
Fluid and Filter Changes ................. 414
Fluid Level Check ...................... 413
Fluid Type ........................ 414,447
Shift Indicator ........................ 182
Shifting ............................. 267
Special Additives ...................... 415
478 INDEX

Reclining............................ 111
Reclining Rear ........................ 114
Security Alarm (Theft Alarm) .............18,182
Selection of Coolant (Antifreeze) ..........403,446
Sentry Key (Immobilizer) ................... 15
Service Assistance ....................... 470
Service Contract ......................... 472
Service Information ...................... 380
Service Manuals ........................ 474
Setting the Clock .............188,192,200,213,226
Shifting ............................... 267
Automatic Transmission ................. 267
Manual Transmission ................... 274
Transfer Case ......................... 279
Transfer Case, Shifting into Transfer Case Neutral (N) .................. 345,348
Transfer Case, Shifting out of Transfer Case Neutral (N) .................. 347,350
Shoulder Belt Upper Anchorage .............. 40 Shoulder Belts
........................... 32
Side Airbag ............................. 54
Signals, Turn ........................... 127
Sliding Rear Window Power ............................ 30,165
Slippery Surfaces, Driving On ............... 288
Snow Chains (Tire Chains) ................. 313
Snow Plow ............................ 341
Snow Tires ............................ 315
Spare Tire .......................... 308,309
Speed Control (Cruise Control) .............. 133
Speedometer ........................... 180
Starting ............................... 253
Automatic Transmission ................. 253
Engine Block Heater ................. 254,261
Manual Transmission ................... 253
Starting Procedures ...................... 253
Starting Procedures (Diesel Engines) .......... 253
490 INDEX