ignition DODGE RAM 2500 DIESEL 2008 3.G Workshop Manual

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

ELECTRONIC DIGITAL CLOCK
The clock and radio each use the display panel built into
the radio. A digital readout shows the frequency and/or
time in hours and minutes (depending on your radio
model) whenever the ignition switch is in the ON or ACC
position.
When the ignition switch is in the OFF position, or when
the radio frequency is being displayed, time keeping is
accurately maintained.
On the RAQ radio the time button alternates the location
of the time and frequency on the display. On the REF only
one of the two, time or frequency, is displayed at a time.
Clock Setting Procedure
1. Press and hold the time button until the hours blink.
2. Adjust the hours by turning the right side Tune/
Audio control.3. After the hours are adjusted, press the right side
Tune/Audio control to set the minutes.
4. Adjust the minutes using the right side Tune/Audio
control.
5. To exit, press any button/knob or wait approximately
five seconds.
RADIO GENERAL INFORMATION
Radio Broadcast Signals
The radio will provide excellent reception under most
operating conditions. Like any system, however, automo-
tive radios have performance limitations, due to mobile
operation and natural phenomena, which might lead you
to believe your sound system is malfunctioning. To help
you understand and save you concern about these ªap-
parentº malfunctions, you must understand a point or
two about the transmission and reception of radio sig-
nals.
200 UNDERSTANDING YOUR INSTRUMENT PANEL

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

SALES CODE REF Ð AM/FM/CD (SINGLE DISC)
RADIO WITH OPTIONAL SATELLITE RADIO AND
HANDS FREE PHONE CAPABILITY
NOTE:The radio sales code is located on the lower right
side of your radio faceplate.
Operating Instructions - Radio Mode
NOTE:The ignition switch must be in the ON or ACC
position to operate the radio.
Power Switch/Volume Control (Rotary)
Press the ON/VOL control to turn the radio ON. Press
the ON/VOL a second time to turn OFF the radio.
Electronic Volume Control
The electronic volume control turns continuously (360
degrees) in either direction without stopping. Turning the
volume control to the right increases the volume and to
the left decreases it.
When the audio system is turned on, the sound will be
set at the same volume level as last played.
For your convenience, the volume can be turned down,
but not up, when the audio system is off and the ignition
is ON.
REF Radio
202 UNDERSTANDING YOUR INSTRUMENT PANEL

Mode Button (Radio Mode)
Press the MODE button repeatedly to select between the
CD player and Satellite Radio (if equipped).
SEEK Button (Radio Mode)
Press and release the SEEK button to search for the next
listenable station in either AM/FM or Satellite (if
equipped) mode. Press the right side of the button to seek
up and the left side to seek down. The radio will remain
tuned to the new station until you make another selec-
tion. Holding the button will bypass stations without
stopping until you release it.
MUTE Button (Radio Mode)
Press the MUTE button to cancel the sound from the
speakers. MUTE will display. Press the MUTE button a
second time and the sound from the speakers will return.
Rotating the volume control, turning the radio ON/OFF,
or turning ON/OFF the ignition, will cancel the MUTE
feature.NOTE:In Hands-Free Phone (if equipped) mode, the
MUTE button mutes the microphone.
SCAN Button (Radio Mode)
Pressing the SCAN button causes the tuner to search for
the next listenable station in either, AM, FM, or Satellite
(if equipped) frequencies, pausing for five seconds at
each listenable station before continuing to the next. To
stop the search, press SCAN a second time.
PSCAN Button (Radio Mode)
Pressing the PSCAN button causes the tuner to scan
through preset stations in either, AM, FM, or Satellite (if
equipped) frequencies, pausing for five seconds at each
preset station before continuing to the next. To stop the
search, press PSCAN a second time.
TIME Button
Press the TIME button and the time of day will display
for five seconds.
UNDERSTANDING YOUR INSTRUMENT PANEL 203
4

Operating Instructions - CD Mode
NOTE:The ignition switch must be in the ON or ACC
position to operate the radio.
Inserting The Compact Disc (Single CD Player)
Gently insert one CD into the CD player with the CD
label facing up. The CD will automatically be pulled into
the CD Player and the CD icon will illuminate on the
radio display.
If the volume control is ON, the unit will switch to CD
mode and begin to play. The display will show the track
number and play time in minutes and seconds. Play will
begin at the start of track one.
NOTE:
²On some vehicles, you may insert or eject a disc with
the radio or ignition switch OFF.
²If you insert a disc with the ignition ON and the radio
OFF, the CD will automatically be pulled into the CD
player.
²This radio does not play discs with MP3 tracks.
SEEK Button (CD Mode)
Press the right side of the SEEK button for the next track
on the CD. Press the left side of the button to return to the
beginning of the current track, or return to the beginning
of the previous track if the CD is within the first 10
seconds of the current selection.
MUTE Button (CD Mode)
Press the MUTE button to cancel the sound from the
speakers.9MUTE9will display. Press the MUTE button a
second time and the sound from the speakers will return.
Rotating the volume control or turning OFF the ignition
will also return the sound from the speakers.
206 UNDERSTANDING YOUR INSTRUMENT PANEL

Operating Instructions - Auxiliary Mode
The auxiliary (AUX) jack is an audio input jack, which
allows the user to plug in a portable device such as an
MP3 player, cassette player, or microphone and utilize
the vehicle's audio system to amplify the source and play
through the vehicle speakers.
The auxiliary mode becomes active when an electrical
device is plugged into the AUX jack using a standard 3.5
mm stereo audio cable and the user presses and releases
the MODE button until AUX appears on the display.
NOTE:The radio will return to the last stored mode if
the ignition switch is turned from the OFF/LOCK posi-
tion to the ACC position, the radio is turned on, and the
radio was previously in the AUX mode.
SEEK Button (Auxiliary Mode)
No function.
MUTE Button (Auxiliary Mode)
Press the MUTE button to cancel the sound from the
speakers.9MUTE9will display. Press the MUTE button a
second time and the sound from the speakers will return.
Rotating the volume control or turning off the ignition
will also return the sound from the speakers.
SCAN Button (Auxiliary Mode)
No function.
EJECT Button (Auxiliary Mode)
No function.
PSCAN Button (Auxiliary Mode)
No function.
208 UNDERSTANDING YOUR INSTRUMENT PANEL

SALES CODE RAQ ± AM/FM/CD (6-DISC) RADIO
WITH OPTIONAL SATELLITE RADIO, HANDS-FREE
PHONE, AND VIDEO ENTERTAINMENT SYSTEMS
(VESŸ) CAPABILITIES
NOTE:The radio sales code is located on the lower right
side of your radio faceplate.
Operating Instructions - Radio Mode
NOTE:The ignition switch must be in the ON or ACC
position to operate the radio.
Power Switch/Volume Control (Rotary)
Press the ON/VOL control to turn the radio ON. Press
the ON/VOL a second time to turn off the radio.
Electronic Volume Control
The electronic volume control turns continuously (360
degrees) in either direction without stopping. Turning the
volume control to the right increases the volume and to
the left decreases it.
When the audio system is turned on, the sound will be
set at the same volume level as last played.
For your convenience, the volume can be turned down,
but not up, when the audio system is off and the ignition
is ON.
RAQ Radio
210 UNDERSTANDING YOUR INSTRUMENT PANEL