2011 Ram 2500 engine

If the light remains lit with the engine running your
vehicle, will usually be drivable, however, see an autho-
rized dealer for service as soon as possible. If the light is
flashing when the engine is running, immediate service is
required and you may experience reduced performance,
an elevated/rough idle or engine stall and your vehicle
may require towing.
•Engine Temperature Warning Light
This light warns of an overheated engine condi-
tion. As temperatures rise and the gauge ap-
proachesH,this indicator will illuminate and a
single chime will sound after reaching a set threshold.
Further overheating will cause the temperature gauge to
passH,the indicator will continuously flash and a
continuous chime will occur until the engine is allowed
to cool.
If the light turns on while driving, safely pull over and
stop the vehicle. If the A/C system is on, turn it off. Also,shift the transmission into NEUTRAL and idle the ve-
hicle. If the temperature reading does not return to
normal, turn the engine off immediately and call for
service. Refer to “If Your Engine Overheats” in “What To
Do In Emergencies” for more information.
•SERV 4WD
The SERV 4WD light 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.
•Electronic Stability Control (ESC) OFF Indicator
Light — If Equipped
This light indicates the Electronic Stability Con-
trol (ESC) is off.
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•Transmission Temperature Light
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.
CAUTION!
Continuous driving with the Transmission Tempera-
ture Indicator illuminated will eventually cause se-
vere transmission damage or transmission failure.
WARNING!
In some circumstances a Transmission Temperature
Indicator, under continued operation, could cause the
fluid to boil over, come in contact with hot engine or
exhaust components and cause a fire.
•Loose Gascap Indicator
If the vehicle diagnostic system determines
that the fuel filler cap is loose, improperly
installed, or damaged, a loose gascap indicator
will display in the telltale display area. Tighten
the fuel filler cap properly and press the SELECT button
to turn off the message. If the problem continues, the
message will appear the next time the vehicle is started.
A loose, improperly installed, or damaged fuel filler cap
may also turn on the Malfunction Indicator Light (MIL).
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Oil Change Due
Your vehicle is equipped with an engine oil change
indicator system. TheOil Change Duemessage will
flash in the EVIC display for approximately 10 seconds
after a single chime has sounded to indicate the next
scheduled oil change interval. The engine oil change
indicator system is duty-cycle based, which means the
engine oil change interval may fluctuate dependent upon
your personal driving style.
Unless reset, this message will continue to display each
time you turn the ignition switch to the ON position. To
turn off the message temporarily, press and release the
RETURN button. To reset the oil change indicator system
(after performing the scheduled maintenance) perform
the following steps.
1. Turn the ignition switch to the ON position. (Do not
start the engine)2. Fully depress the accelerator pedal slowly three times
within 10 seconds.
3. Turn the ignition switch to the OFF position.
NOTE:If the indicator message illuminates when you
start the engine, the oil change indicator system did not
reset. If necessary, repeat these steps.
Fuel Economy / Fuel Saver Mode / Distance To
Empty (DTE) — If Equipped
Average Fuel Economy
Shows the average fuel economy since the last reset.
When the fuel economy is reset, the display will read “0”
or show dashes for two seconds. Then, the history
information will be erased, and the averaging will con-
tinue from the last fuel average reading before the reset.
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Fuel Saver Mode
The FUEL SAVER MODE message will display above the
average fuel economy in the EVIC display. This message
will appear whenever MDS (if equipped) allows the
engine to operate on four cylinders, or if you are driving
in a fuel efficient manner.This feature allows you to monitor when you are driving
in a fuel efficient manner, and it can be used to modify
driving habits in order to increase fuel economy.
Distance To Empty (DTE)
Distance To Empty (DTE) Shows the estimated distance
that can be traveled with the fuel remaining in the tank.
This estimated distance is determined by a weighted
average of the instantaneous and average fuel economy,
according to the current fuel tank level. DTE cannot be
reset through the RETURN button.
NOTE:Significant changes in driving style or vehicle
loading will greatly affect the actual drivable distance of
the vehicle, regardless of the DTE displayed value.
When the DTE value is less than 10 miles (16 km)
estimated driving distance, the DTE display will change
to a text display ofLOW FUEL.This display will
continue until the vehicle runs out of fuel. Adding a
Fuel Saver Mode — On
232 UNDERSTANDING YOUR INSTRUMENT PANEL

Vehicle Info (Customer Information Features)
Press and release the UP or DOWN button until “Vehicle
Info” displays in the EVIC and press the SELECT button.
Press the UP and DOWN button to scroll through the
available information displays, then press SELECT to
display anyone of the following choices.
•Coolant Temp
Displays the actual coolant temperature.
•Oil Temperature — If Equipped
Displays the actual oil temperature.
•Oil Pressure
Displays the actual oil pressure.
•Trans Temperature — If Equipped
Displays the actual transmission temperature.
•Engine Hours
Displays the hours of engine operation.
•Trailer Brake — If Equipped
Displays trailer brake output power and trailer brake
status indicator.
Tire PSI
Press and release the UP or DOWN button until “Tire
PSI” displays in the EVIC and press the SELECT button.
This will display the Tire Pressure Monitor System
(shows the current pressure of all four road tires). For
additional information, refer to “Tire Pressure Monitor
System” in “Starting And Operating”.
234 UNDERSTANDING YOUR INSTRUMENT PANEL

Compass / Temperature Display
The compass readings indicate the direction the vehicle is
facing. The EVIC will display one of eight compass
readings and the outside temperature.
NOTE:
•The system will display the last known outside tem-
perature when starting the vehicle and may need to be
driven several minutes before the updated tempera-
ture is displayed. Engine temperature can also affect
the displayed temperature, therefore temperature
readings are not updated when the vehicle is not
moving.
•During snowplow usage on vehicles equipped with
outside temperature display, the display may show
higher temperatures than the outside ambient tem-
perature. The higher displayed temperature is due to
blocked or reduced airflow to the underhood ambienttemperature sensor caused by the snowplow. In addi-
tion, on vehicles equipped with Automatic Tempera-
ture Control (ATC), it is suggested that the interior
cabin temperature be manually controlled should the
system not perform as desired while in automatic
mode. Both the outside temperature display and ATC
operation will return to normal when the snowplow is
removed.
Automatic Compass Calibration
This compass is self-calibrating, which eliminates the
need to manually reset the compass. When the vehicle is
new, the compass may appear erratic and the EVIC will
display CAL until the compass is calibrated. You may
also calibrate the compass by completing one or more
360–degree turns (in an area free from large metal or
metallic objects) until the CAL indicator displayed in the
EVIC turns off. The compass will now function normally.
236 UNDERSTANDING YOUR INSTRUMENT PANEL

Automatic Operation
1. Position the MODE control knob to the Auto position
on the Automatic Temperature Control (ATC) Panel.
2. Position the BLOWER control knob in the Auto posi-
tion on the ATC Panel.
3. Next, adjust the temperature you would like the
system to maintain by adjusting the driver and front
passenger temperature buttons. Once the desired tem-
perature is displayed, the system will achieve and auto-
matically maintain that comfort level.
4. When the system is set up for your comfort level, it is
not necessary to change the settings. You will experience
the greatest efficiency by simply allowing the system to
function automatically.NOTE:•It is not necessary to move the temperature settings for
cold or hot vehicles. The system automatically adjusts
the temperature, mode and fan speed to provide
comfort as quickly as possible.
•The temperature can be displayed in U.S. or Metric
units by selecting the US/M customer-programmable
feature. Refer to the “Electronic Vehicle Information
Center (EVIC) — Customer-Programmable Features
(SETUP)” in this section of the manual.
To provide you with maximum comfort in the Automatic
mode, during cold start-ups the blower fan will remain
on low and the DELAY symbol will appear in the ATC
display until the engine warms up. The blower will
increase in speed and transition into Auto mode and
DELAY will no longer be illuminated in the display. The
292 UNDERSTANDING YOUR INSTRUMENT PANEL

Recirculation Control
When outside air contains smoke, odors, or
high humidity, or if rapid cooling is desired,
you may wish to recirculate interior air by
pressing the RECIRCULATION control button.
Recirculation mode should only be used temporarily. The
recirculation LED will illuminate on the blower control
knob when this button is selected. Push the button a
second time to turn off the Recirculation mode LED and
allow outside air into the vehicle.
NOTE:In cold weather, use of Recirculation mode may
lead to excessive window fogging. The Recirculation
mode is not allowed in the Floor/Defrost Mix and
Defrost modes to improve window clearing operation.
Recirculation will be disabled automatically if these
modes are selected.
Summer Operation
The engine cooling system in air conditioned vehicles
must be protected with a high-quality antifreeze coolant
to provide proper corrosion protection and to protect
against engine overheating. A solution of 50% ethylene
glycol antifreeze coolant and 50% water is recommended.
Refer to “Maintenance Procedures” in “Maintaining Your
Vehicle” for proper coolant selection.
Winter Operation
To ensure the best possible heater and defroster perfor-
mance, make sure the engine cooling system is function-
ing properly and the proper amount, type, and concen-
tration of coolant is used. Refer to “Maintenance
Procedures” in “Maintaining Your Vehicle” for proper
coolant selection. Use of the air Recirculation mode
during Winter months is not recommended because it
may cause window fogging.
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