2008 DODGE RAM 2500 DIESEL light

experience reduced performance, an elevated/rough idle
or engine stall and your vehicle may require towing. The
light will come on when the ignition is first turned on
and remain on for 15 seconds as a bulb check. If the light
does not come on during starting, have the system
checked by an authorized dealer.
22. SERV 4WD Indicator
The 4WD indicator will be illuminated whenever the
4WD mode is engaged for either the manual or electric
shift 4WD systems. The SERV 4WD indicator monitors
the electric shift 4WD system. If the SERV 4WD light
stays on or comes on during driving, it means that the
4WD system is not functioning properly and that service
is required.23. Water In Fuel Indicator
Indicates there is water detected in the fuel
filter. Refer to the Maintenance section, Drain-
ing Fuel/Water Separator Filter, for water
drain procedure.
24. Tire Pressure Monitoring Telltale Light Ð If
Equipped
Each tire, including the spare (if provided),
should be checked monthly when cold and
inflated to the inflation pressure recommended
by the vehicle manufacturer on the vehicle
placard or tire inflation pressure label. (If your vehicle
has tires of a different size than the size indicated on the
vehicle placard or tire inflation pressure label, you should
determine the proper tire inflation pressure for those
tires.)
196 UNDERSTANDING YOUR INSTRUMENT PANEL

CAUTION!
The TPMS has been optimized for the original
equipment tires and wheels. TPMS pressures and
warning have been established for the tire size
equipped on your vehicle. Undesirable system opera-
tion or sensor damage may result when using re-
placement equipment that is not of the same size,
type, and/or style. Aftermarket wheels can cause
sensor damage. Do not use tire sealant from a can, or
balance beads if your vehicle is equipped with a
TPMS, as damage to the sensors may result.
TPMS ªLight Loadº Reset Switch ± If Equipped
The TPMS ºLight Loadº reset switch allows you to
choose between Light Load vehicle conditions and Max
Load vehicle conditions tire pressures and related TPMS
warning levels. The switch is located in the instrumentpanel, below the climate control panel. For additional
information refer to ªTire Pressure Monitoring System
(TPMS) Ð If Equippedº in section 5 of this manual.
25. 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 this
light comes on, stop the vehicle and run the engine at idle
or faster, with the transmission in NEUTRAL until the
light goes off.
26. Wait To Start Indicator
The Wait To Start indicator will illuminate when
the ignition is turned to the run position and the
intake manifold temperature is below 66ÉF (19ÉC).
198 UNDERSTANDING YOUR INSTRUMENT PANEL

Follow engine starting procedure for proper engine start-
ing and operating. Wait until the Wait To Start indicator
turns OFF, then start the vehicle.
NOTE:The Wait To Start Indicator may not illuminate if
the engine coolant temperature is warm enough.
27. Odometer/Trip Odometer Button
Press this button to toggle between the odometer and the
trip odometer display. Holding the button in resets the
trip odometer reading when in trip mode.
28. Fuel Gauge
Shows level of fuel in tank when ignition switch is in the
ON position.
29. Low Fuel Warning Light
Glows when the pointer is between ªEº and 1/8
indication mark (approximately 15% of tank vol-
ume) on the fuel gauge. When the fuel gauge
pointer is on ªEº (equivalent to Distance To Empty[DTE]=0ontheoverhead console, if so equipped) there
is 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 fuel stations.
Fuel tank volumes are as follows:
²34 gal (128 L) - 2500/3500 short box models
²35 gal (132 L) - 2500/3500 long box models
30. CRUISE Light
This indicator lights when the electronic speed control
system is turned on.
UNDERSTANDING YOUR INSTRUMENT PANEL 199
4

Two Types of Signals
There are two basic types of radio signals: AM or
Amplitude Modulation, in which the transmitted sound
causes the amplitude, or height, of the radio waves to
vary; and FM or Frequency Modulation, in which the
frequency of the wave is varied to carry the sound.
Electrical Disturbances
Radio waves may pick up electrical disturbances during
transmission. They mainly affect the wave amplitude,
and thus remain a part of the AM reception. They
interfere very little with the frequency variations that
carry the FM signal.
AM Reception
AM sound is based on wave amplitude, so AM reception
can be disrupted by such things as lightning, power lines
and neon signs.
FM Reception
Because FM transmission is based on frequency varia-
tions, interference that consists of amplitude variations
can be filtered out, leaving the reception relatively clear,
which is the major feature of FM radio.
NOTE:The radio, steering wheel radio controls (if
equipped), and 6-disc CD/DVD changer (if equipped)
will remain active for up to 10 minutes after the ignition
switch has been turned OFF. Opening a vehicle front
door will cancel this feature.
UNDERSTANDING YOUR INSTRUMENT PANEL 201
4

Fast Forward (FF)
Press the FF button up momentarily to advance the tape
in the direction that it is playing. The tape will advance
until the button is pressed again or the end of the tape is
reached. At the end of the tape, the tape will play in the
opposite direction.
Rewind (RW)
Press the RW button momentarily to reverse the tape
direction. The tape will reverse until the button is pressed
again or until the end of the tape is reached. At the end of
the tape, the tape will play in the opposite direction.
Tape Eject
Press this button and the cassette will disen-
gage and eject from the radio.
SCAN Button
Press this button to play 10 seconds of each selection.
Press the SCAN button a second time to cancel the
feature.
Changing Tape Direction
If you wish to change the direction of tape travel (side
being played), press Preset 6. The lighted arrow in the
display window will show the new direction.
Metal Tape Selection
If a standard metal tape is inserted into the player, the
player will automatically select the correct equalization.
Pinch Roller Release
If ignition power or the radio ON/OFF switch is turned
off, the pinch roller will automatically retract to protect
the tape from any damage. When power is restored to the
tape player, the pinch roller will automatically reengage
and the tape will resume play.
UNDERSTANDING YOUR INSTRUMENT PANEL 229
4

Noise Reduction
The Dolby Noise Reduction System* is on whenever the
tape player is on, but may be switched off.
To turn off the Dolby Noise Reduction System: Press
Preset 1 after you insert the tape. The NR light in the
display will go off when the Dolby System is off.
* ºDolbyº noise reduction is manufactured under license
from Dolby Laboratories Licensing Corporation. Dolby
and the double-D symbol are trademarks of Dolby Labo-
ratories Licensing Corporation.
Operating Instructions - (CD Mode for CD Audio
Play)
NOTE:The ignition switch must be in the ON or ACC
position to operate the radio.NOTE:This Radio is capable of playing compact discs
(CD), recordable compact discs (CD-R), rewritable com-
pact discs (CD-RW) compact discs with MP3 tracks and
multisession compact discs with CD and MP3 tracks and
WMA.
Inserting Compact Disc(s)
CAUTION!
This CD player will accept 4 3/4 inch (12 cm) discs
only. The use of other sized discs may damage the
CD player mechanism.
You may eject a disc with the radio OFF.
230 UNDERSTANDING YOUR INSTRUMENT PANEL

menus and instructions for selecting a variety of destina-
tions and routes, AM/FM stereo radio and six-disc CD
changer with MP3 capability.
Mapping information for navigation is supplied on a
DVD that is loaded into the unit. One map DVD covers
all of North America. Refer to your ªNavigation User's
Manualº for detailed operating instructions.
Operating Instructions Ð Satellite Radio Ð If
Equipped
Refer to your ªNavigation User's Manualº for detailed
operating instructions.
REC Setting the Clock
GPS Clock
The GPS receiver used in this system is synchronized to
the time data being transmitted by the GPS satellites. The
satellites' clock is Greenwich Mean Time (GMT). This isthe worldwide standard for time. This makes the sys-
tem's clock very accurate once the appropriate time zone
and daylight savings information is set.
1. At theMain Menuscreen, highlight ªClock Setupº
and press ENTERORpress and hold for three seconds
the TIME button on the unit's faceplate. TheClock Setup
screen appears.
UNDERSTANDING YOUR INSTRUMENT PANEL 239
4

2. To show the GPS clock, select ªDisplayed Clock: GPS
Clockº and press ENTER.
3. To adjust the time zone, Select ªTime Zoneº and press
ENTER. Select the appropriate time zone and press
ENTER.
4. To turn daylight savings on or off, select ªDaylight
Savingsº and press ENTER. Select ªOnº or ªOffº and
press ENTER.
5. Select DONE to exit from the clock setting mode. Press
ENTER to save your changes. If you press CANCEL or
NAV then your changes will not be saved.
User Defined Clock
If you wish to set the clock to a time different than the
system clock, you can manually adjust the time by
choosing the ªUser Defined Clockº option.
1. At theClock Setupscreen highlight ªDisplayed
Clock: User Defined Clockº.2. To increase the clock by hours, make sure ªHR +º is
highlighted and press ENTER. Press ENTER again to
increase the clock by another hour. You will see on the
ªUser Defined Timeº display the number of hours you
have increased the clock by.
240 UNDERSTANDING YOUR INSTRUMENT PANEL