light DODGE RAM 2500 DIESEL 2007 3.G Repair Manual

24. 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. (See page 391 for more information.)
25. Low Washer Fluid Light
This light comes on when the washer fluid level falls
below approximately 1/4 full. The light will remain on
until fluid is added and ignition switch is cycled.
26. 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.
27. Wait To Start Indicator
The Wait To Start Indicator will illuminate when
the ignition is turned to the run position and the
ambient temperature is below 66 degrees F. Follow
engine starting procedure for proper engine starting and
operating. Wait until the Wait To Start Indicator turns
OFF then start the vehicle.
28. 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.
29. Fuel Gauge
Shows level of fuel in tank when ignition switch is in the
ON position.
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30. Low Fuel Warning Light Glows when the pointer is between “E” and 1/8
indication mark (approximately 15% of tank vol-
ume) on the fuel gauge. When the fuel gauge
pointer is on “E” (equivalent to Distance To Empty [DTE]
= 0 on the overhead 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 gas stations. (See page
139 for more information.)
Ram fuel tank volumes are as follows:
•34 gallons - 2500/3500 short box models
•35 gallons - 2500/3500 long box models 31. Door Ajar
The Door Ajar light will illuminate when any
door is opened. When the ignition is ON the
Door Ajar light will stay illuminated until the
open door is closed. When the ignition is OFF
the Door Ajar light will stay illuminated until the open
door is closed or the battery saver feature automatically
turns the light off.
32. CRUISE Light
This indicator lights when the electronic speed control
system is turned on.
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.
UNDERSTANDING YOUR INSTRUMENT PANEL 187
4

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 189
4

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.
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.
* ”Dolby” 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.
Operation Instructions - (CD MODE for CD Audio
Play)
NOTE: The ignition switch must be in the ON or ACC
position to operate the radio.
NOTE: Note: This Radio is capable of playing compact
discs (CD), recordable compact discs (CD-R), rewritable
UNDERSTANDING YOUR INSTRUMENT PANEL 217
4

Tape Player
Pressing the top of the switch once will go to the next
selection on the cassette. Pressing the bottom of the
switch once will go to the beginning of the current
selection or to the beginning of the previous selection if it
is within the first 5 seconds of the current selection.
If you press the switch up or down twice it plays the
second selection, three times, it will play the third, etc.
The button in the center of the left hand switch has no
function in this mode.
CD Player
Pressing the top of the switch once will go to the next
track on the CD. Pressing the bottom of the switch once
will go to the beginning of the current track or to the
beginning of the previous track if it is within one second
after the current track begins to play. If you press the switch up or down twice it plays the
second track, three times, it will play the third, etc.
The button in the center of the left hand switch has no
function in this mode.
CASSETTE TAPE AND PLAYER MAINTENANCE
To keep the cassette tapes and player in good condition,
take the following precautions:
1. Do not use cassette tapes longer than C-90; otherwise,
sound quality and tape durability will be greatly dimin-
ished.
2. Keep the cassette tape in its case to protect from
slackness and dust when it is not in use.
3. Keep the cassette tape away from direct sunlight, heat
and magnetic fields such as the radio speakers.
4. Before inserting a tape, make sure that the label is
adhering flatly to the cassette.
232 UNDERSTANDING YOUR INSTRUMENT PANEL

5. A loose tape should be corrected before use. To rewind
a loose tape, insert the eraser end of a pencil into the tape
drive gear and twist the pencil in the required directions.
Maintain your cassette tape player. The head and capstan
shaft in the cassette player can pick up dirt or tape
deposits each time a cassette is played. The result of
deposits on the capstan shaft may cause the tape to wrap
around and become lodged in the tape transport. The
other adverse condition is low or “muddy” sound from
one or both channels, as if the treble tone control were
turned all the way down. To prevent this, you should
periodically clean the head with a commercially available
WET cleaning cassette.
As preventive maintenance, clean the head about every
30 hours of use. If you wait until the head becomes very
dirty (noticeably poor sound), it may not be possible to
remove all deposits with a simple WET cleaning cassette.COMPACT DISC MAINTENANCE
To keep the compact discs in good condition, take the
following precautions:
1. Handle the disc by its edge; avoid touching the
surface.
2. If the disc is stained, clean the surface with a soft cloth,
wiping from center to edge.
3. Do not apply paper or tape to the disc; avoid scratch-
ing the disc.
4. Do not use solvents such as benzene, thinner, cleaners,
or antistatic sprays.
5. Store the disc in its case after playing.
6. Do not expose the disc to direct sunlight.
7. Do not store the disc where temperatures may become
too high.
UNDERSTANDING YOUR INSTRUMENT PANEL 233
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Air Conditioning and Heating — If Equipped
Air Conditioning Operation
To turn on the Air Conditioning, set the fan
control at any speed and press the snowflake
button located at the right of the control panel.
Conditioned air will be directed through the outlets selected by the mode control. A light in the
snowflake button shows that the air conditioning is on.
Press the button a second time to turn the air condition-
ing off.
Slight changes in engine speed or power may be noticed
when the air conditioning compressor is on. This is a
normal occurrence as the compressor will cycle on and
off to maintain comfort and increase fuel economy.
The mode control (at the right of the
control panel) can be set in any of the
following positions:
Air Conditioning And Heating
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4

Air Conditioning with Dual Zone Temperature
Control — If Equipped
With the Dual Zone Temperature Control System, each
front seat occupant can independently control the tem-
perature of air coming from the outlets on their side of
the vehicle.
Air Conditioning and Heating Operation
To turn on the Air Conditioning, set the fan control at any
speed and press the snowflake button located on the
control panel. Conditioned air will be directed through
the outlets selected by the mode control. A light in the
snowflake button shows that the air conditioning is on.
Press the button a second time to turn the air condition-
ing off.
A/C Pushbutton
With the fan control in the ON posi-
tion, pushing the A/C button turns on
the air conditioning compressor. An
indicator light on the button shows
that the Air Conditioning compressor
is on. Conditioned air is now directed
through the mode outlets selected.
Pushing the button a second time turns the compressor
OFF.
Dual Zone Control Head
240 UNDERSTANDING YOUR INSTRUMENT PANEL

Window Fogging
Windows will fog on the inside when the humidity inside
the vehicle is high. This often occurs in mild or cool
temperatures when it’s rainy or humid. In most cases
turning on the Air-conditioning (pressing the snowflake
button) will clear the fog. Adjust the temperature control,
air direction and blower speed to maintain comfort.
As the temperature gets colder it may be necessary to
direct air onto the windshield by using MIX Mode
position on the control. Adjust the temperature control
and blower speed to maintain comfort. Higher blower
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 is
encountered, 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.
UNDERSTANDING YOUR INSTRUMENT PANEL 245
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Manual Transmission ....................274
▫ Downshifting ........................275

Four-Wheel- Drive Operation — If Equipped . . . 276
▫ Manually Shifted Transfer Case Operating
Information/Precautions ................276
▫ Shifting Procedure - Manually Shifted Transfer
Case ..............................279
▫ Transfer Case Reminder Light ............280
▫ Electronically Shifted Transfer Case Operating
Information/Precautions–If Equipped .......280
▫ Shifting Procedure - Electronically Shifted
Transfer Case ........................285

Limited-Slip Differential — If Equipped .......287

Driving On Slippery Surfaces ..............288

Driving Off-Road .......................289

Parking Brake .........................290

Brake System ..........................291
▫ Brake Noise .........................292
▫ Four-Wheel Anti-Lock Brake System ........292

Power Steering ........................294

Tire Safety Information ...................295
▫ Tire Markings ........................295
▫ Tire Identification Number (TIN) ..........299
▫ Tire Loading And Tire Pressure ...........300

Tires — General Information ...............304
▫ Tire Pressure .........................304
▫ Tire Inflation Pressures .................305
250 STARTING AND OPERATING