2007 DODGE RAM 2500 DIESEL service indicator

Transfer Case Position Indicator Lights —
Electronically Shifted Transfer Case Only
Transfer case position indicator lights are located in the
instrument cluster and indicate the current and desired
transfer case selection. When you select a different trans-
fer case position, the indicator lights will do the follow-
ing:
If All Shift Conditions are Met
1. The current position indicator light will turn OFF.
2. The selected position indicator light will flash until the
transfer case completes the shift.
3. When the shift is complete, the indicator light for the
selected position will stop flashing and remain ON.
If One or More Shift Conditions are not Met
1. The indicator light for the current position will remain
ON. 2. The newly selected position indicator light will con-
tinue to flash.
3. The transfer case
will notshift.
NOTE: Before retrying a selection, make certain that all
the necessary requirements for selecting a new transfer
case position have been met. To retry the selection, turn
the control knob back to the current position, wait five (5)
seconds, and retry selection. To find the shift require-
ments, refer to the Shifting Procedure for your transfer
case, located in this section of the owner’s manual.
The “SERVICE 4WD” warning light monitors the electric
shift 4WD system. If this light remains on after engine
start up or illuminates during driving, it means that the
4WD system is not functioning properly and that service
is required.
282 STARTING AND OPERATING

Life of Tire
The service life of a tire is dependent upon varying
factors including but not limited to:
•Driving style
•Tire pressure
•Distance driven
WARNING!
Tires and spare tire should be replaced after six
years, regardless of the remaining tread. Failure to
follow this warning can result in sudden tire failure.
You could lose control and have an accident result-
ing in serious injury or death.
Keep dismounted tires in a cool, dry place with as little
exposure to light as possible. Protect tires from contact
with oil, grease, and gasoline.
Replacement Tires
The tires on your new vehicle provide a balance of many
characteristics. They should be inspected regularly for
wear and correct cold tire inflation pressure. The manu-
facturer strongly recommends that you use tires equiva-
lent to the originals in size, quality and performance
when replacement is needed (refer to the paragraph on
“Tread Wear Indicators”). Refer to the “Tire and Loading
Information” placard for the size designation of your tire.
The service description and load identification will be
found on the original equipment tire. Failure to use
equivalent replacement tires may adversely affect the
safety, handling, and ride of your vehicle. We recommend
that you contact your original equipment or an autho-
rized tire dealer with any questions you may have on tire
specifications or capability.
STARTING AND OPERATING 311
5

ONBOARD DIAGNOSTIC SYSTEM (OBD II)
Vehicles equipped with California emissions controls
have a sophisticated onboard diagnostic system called
OBDII. This system monitors the performance of the
emissions, engine, and automatic transmission control
systems. When these systems are operating properly,
your vehicle will provide excellent performance and fuel
economy, as well as engine emissions well within current
government regulations.
If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light.” It will
also store diagnostic codes and other information to
assist your service technician in making repairs. Al-
though your vehicle will usually be driveable and not
need towing, see your dealer for service as soon as
possible.CAUTION!
Prolonged driving with the “Malfunction Indicator
Light” on could cause further damage to the emis-
sion control system. It could also affect fuel economy
and driveability. The vehicle must be serviced before
any emissions tests can be performed.
If the “Malfunction Indicator Light” is flashing,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
REPLACEMENT PARTS
Use of genuine Mopar parts for normal/scheduled
maintenance and repairs is highly recommended to in-
sure the designed performance. Damage or failures
caused by the use of non-Mopar parts for maintenance
and repairs will not be covered by the manufacturer’s
warranty.
MAINTAINING YOUR VEHICLE 379
7

CAUTION!
Do not drain the fuel/water separator filter when the
engine is running.
NOTE: Care should be taken in disposing of used fluids
from your vehicle. Used fluids, indiscriminately dis-
carded, can present a problem to the environment. Con-
tact your local authorized dealer, service station, or
government agency for advice on recycling programs
and for where used fluids and filters can be properly
disposed of in your area.
Drain a small amount from the fuel/water separator
filter periodically or when the WATER IN FUEL indicator
lamp is on. Pull outward on the drain valve lever, located
on the side of the filter, and allow any accumulated water
to drain. Hold the drain valve open until all water and contaminants have been removed. Close the drain release
valve, by returning it to the inward position, when clean
fuel is visible.
NOTE:
The Fuel / Water separator drain valve is
identified by its yellow handle and is located on the
inboard side of the fuel filter housing.
If more than a couple ounces of fuel has been drained,
follow the directions below for “Priming if the engine has
run out of fuel.”
WARNING!
Do not open the high pressure fuel system with the
engine running. Engine operation causes high fuel
pressure. High pressure fuel spray can cause serious
injury or death.
392 MAINTAINING YOUR VEHICLE

CD (Compact Disc) Player............190,198,211
Cellular Phone .......................... 87
Center High Mounted Stop Light ............ 440
Center Lap Belts ......................... 42
Center Seat Storage Compartment .........159,160
Certification Label ....................... 323
Charge Air Cooler ....................... 408
Chart, Tire Sizing ........................ 297
Check Engine Light (Malfunction Indicator Light) . 183
Child Restraint ........................ 57,58
Child Restraint Tether Anchors .............62,66
Child Seat ............................ 58,65
Cigar Lighter ........................... 154
Cleaning Wheels ............................. 424
Climate Control ......................... 234
Clock ..................... 187,192,200,213,226
Clutch Linkage Maintenance ................ 411
Compact Disc (CD) Maintenance ............. 233 Compact Spare Tire
...................... 308
Compass ........................... 140,141
Compass Calibration ..................... 141
Compass Variance ....................... 142
Computer, Trip/Travel .................... 137
Console, Overhead ....................... 136
Contract, Service ........................ 472
Coolant Pressure Cap (Radiator Cap) .......... 405
Cooling System ......................... 401
Adding Coolant (Antifreeze) .............. 404
Coolant Capacity ...................... 445
Coolant Level ................... 401,402,406
Disposal of Used Coolant ................ 406
Drain, Flush, and Refill .................. 403
Inspection ........................... 406
Points to Remember .................... 406
Pressure Cap ......................... 405
Radiator Cap ......................... 405
Selection of Coolant (Antifreeze) .........403,446
480 INDEX

Keys................................. 12
Lane Change and Turn Signals .............. 127
Lap Belts .............................. 42
Lap/Shoulder Belts ....................... 32
LATCH (Lower Anchors and Tether for CHildren) . 62
Life of Tires ............................ 311
Lights .............................. 75,122
Airbag ............................ 55,180
Anti-Lock Warning .................. 184,294
Brake Warning ........................ 184
Bulb Replacement ................... 432,433
Cap Top Clearance ..................... 441
Cargo .............................. 126
Center Mounted Stop ................... 440
Check Engine (Malfunction Indicator) ........ 183
Courtesy/Reading ..................... 136
Cruise .............................. 187
Daytime Running ...................... 125 Dual Wheel Assembly Rear
............... 443
Fog .......................... 126,185,436
Four-Wheel Drive Indicator ............... 280
Hazard Warning Flasher ................. 354
Headlights ........................... 124
High Beam ........................ 128,180
High Beam Indicator .................... 180
High Beam/Low Beam Select ............. 128
Illuminated Entry ....................... 19
Instrument Cluster ..................... 179
Intensity Control ....................... 123
Interior .......................... 123,136
Lights On Reminder .................... 126
Passing ............................. 128
Seat Belt Reminder ..................... 180
Service ........................... 432,433
Side Marker .......................... 445
Transfer Case ......................... 280
Transmission Warning ................... 186
INDEX 485
10

Transmission Automatic ........................ 267,413
Fluid ............................... 447
Maintenance .......................... 413
Manual ........................ 253,274,412
Shifting ............................. 267
Transmitter Battery Service (Remote Keyless Entry) . 23
Transmitter, Garage Door Opener (HomeLink ) . . 143
Tread Wear Indicators .................... 310
Trip Computer .......................... 137
Trip Odometer ....................... 182,186
Turn Signals ................... 127,179,433,437
UConnect™ (Hands-Free Phone) .............. 87
Underhood Fuses ........................ 426
Uniform Tire Quality Grades ................ 475
Universal Transmitter ..................... 143
Variance, Compass ....................... 142 Vehicle Identification Number (VIN)
............ 8
Vehicle Loading ...................... 301,323
Vehicle Modifications/Alterations .............. 8
Vehicle Storage ......................... 431
Video Entertainment System
(Rear Seat Video System) .................. 226
Voltmeter ............................. 179
Warning Lights (Instrument Cluster Description) . 179
Warnings and Cautions ..................... 7
Warranty Information ..................... 473
Washers, Windshield .................. 130,399
Washing Vehicle ......................... 422
Wheel Alignment and Balance ............... 312
Wheel and Wheel Trim .................... 424
Wheel and Wheel Trim Care ................ 424
Wheel Changing ........................ 356
Wheel Cover ........................... 362
Wheel Mounting ........................ 357
INDEX 493
10