2018 Ram 2500 heater

WARNINGS AND CAUTIONS
This Owner ’s Manual containsWARNINGSagainst oper-
ating procedures that could result in a collision, bodily
injury and/or death. It also contains CAUTIONSagainst
procedures that could result in damage to your vehicle. If
you do not read this entire Owner ’s Manual, you may miss
important information. Observe all Warnings and Cau-
tions.
VAN CONVERSIONS/CAMPERS
The New Vehicle Limited Warranty does not apply to body
modifications or special equipment installed by van
conversion/camper manufacturers/body builders. U.S.
residents refer to the Warranty Information book, Section
2.1.C. Canadian residents refer to the “What Is Not Cov-
ered” section of the Warranty Information book. Such
equipment includes video monitors, VCRs, heaters, stoves,
refrigerators, etc. For warranty coverage and service on
these items, contact the applicable manufacturer. Operating instructions for the special equipment installed
by the conversion/camper manufacturer should also be
supplied with your vehicle. If these instructions are miss-
ing, please contact your authorized dealer for assistance in
obtaining replacement documents from the applicable
manufacturer.
For information on the Body Builder ’s Guide refer to
www.rambodybuilder.com. This website contains dimen-
sional and technical specifications for your vehicle. It is
intended for Second Stage Manufacturer’s technical sup-
port. For service issues, contact your authorized dealer.
VEHICLE MODIFICATIONS/ALTERATIONS
WARNING!
Any modifications or alterations to this vehicle could
seriously affect its roadworthiness and safety and may
lead to a collision resulting in serious injury or death.
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INTRODUCTION 7

Keyless Enter-N-Go), the driver ’s seat will move about
2.4 inches (60 mm) rearward if the driver ’s seat position
is greater than or equal to 2.7 inches (67.7 mm) forward
of the rear stop. The seat will return to its previously set
position when you place the ignition into the ACC or
RUN position.
• When you remove the key fob from the ignition (or
change the ignition to OFF, for vehicles equipped with
Keyless Enter-N-Go), the driver ’s seat will move to a
position 0.3 inches (7.7 mm) forward of the rear stop if
the driver ’s seat position is between 0.9 inches and 2.7
inches (22.7 mm and 67.7 mm) forward of the rear stop.
The seat will return to its previously set position when
you place the ignition to the ACC or RUN position.
• The Easy Entry/Easy Exit feature is disabled when the
driver ’s seat position is less than 0.9 inches (22.7 mm)
forward of the rear stop. At this position, there is no
benefit to the driver by moving the seat for Easy Exit or
Easy Entry.
Each stored memory setting will have an associated Easy
Entry and Easy Exit position. NOTE:The Easy Entry/Exit feature is not enabled when the
vehicle is delivered from the factory. The Easy Entry/Exit
feature is enabled (or later disabled) through the program-
mable features in the Uconnect system. Refer to “Uconnect
Settings” in “Multimedia” for further information.
Heated Seats — If Equipped
On some models, the front and rear seats may be equipped
with heaters located in the seat cushions and seat backs.
WARNING!
• Persons who are unable to feel pain to the skin
because of advanced age, chronic illness, diabetes,
spinal cord injury, medication, alcohol use, exhaus-
tion or other physical condition must exercise care
when using the seat heater. It may cause burns even
at low temperatures, especially if used for long
periods of time.
•
Do not place anything on the seat or seatback that
insulates against heat, such as a blanket or cushion.
This may cause the seat heater to overheat. Sitting in a
seat that has been overheated could cause serious burns
due to the increased surface temperature of the seat.
52 GETTING TO KNOW YOUR VEHICLE

Front Heated Seats
The front heated seats control buttons are located on the
center instrument panel below the climate controls.
If your vehicle is equipped with a touchscreen, the front
heated seats control buttons are also located within the
climate or controls screen of the touchscreen.
•Press the heated seat button
once to turn the HI
setting on.
• Press the heated seat buttona second time to turn
the LO setting on.
• Press the heated seat buttona third time to turn the
heating elements off.
When the HI-level setting is selected, the heater will
provide a boosted heat level during the first four minutes
of operation. Then, the heat output will drop to the normal
HI-level. If the HI-level setting is selected, the system will
automatically switch to LO-level after approximately 60
minutes of continuous operation. At that time, the display
will change from HI to LO, indicating the change. The
LO-level setting will turn off automatically after approxi-
mately 45 minutes. NOTE:
The engine must be running for the heated seats to
operate.
Vehicles Equipped With Remote Start
On models that are equipped with remote start, the driv-
er ’s seat can be programmed to come on during a remote
start.
If your vehicle is equipped with a touchscreen, this feature
can be programmed through the Uconnect system. Refer to
“Uconnect Settings” in “Multimedia” for further informa-
tion.
If your vehicle is not equipped with a touchscreen, this
feature can be programmed through the instrument cluster
display. Refer to “Instrument Cluster Display” in “Getting
To Know Your Instrument Panel” for further information.
Rear Heated Seats
On some models, the two outboard seats are equipped
with heated seats. The heated seat switches for these seats
are located on the rear of the center console.
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GETTING TO KNOW YOUR VEHICLE 53

There are two heated seat switches that allow the rear
passengers to operate the seats independently. You can
choose from HI, LO or OFF heat settings. Amber indicator
lights in each switch indicate the level of heat in use. Two
indicator lights will illuminate for HI, one for LO and none
for OFF.Push the switch once to select HI-level heating.
Push the switch a second time to select LO-level
heating. Push the switch a third time to shut the
heating elements OFF.
NOTE:
• Once a heat setting is selected, heat will be felt within
two to five minutes.
• The engine must be running for the heated seats to
operate.
When the HI-level setting is selected, the heater will
provide a boosted heat level during the first four minutes
of operation. Then, the heat output will drop to the normal
HI-level. If the HI-level setting is selected, the system will
automatically switch to LO-level after approximately 60
minutes of continuous operation. At that time, the number of illuminated LEDs changes from two to one, indicating
the change. The LO-level setting will turn OFF automati-
cally after approximately 45 minutes.
Ventilated Seats — If Equipped
Located in the seat cushion are small fans that draw the air
from the passenger compartment and move air through
fine perforations in the seat cover to help keep the driver
and front passenger cooler in higher ambient temperatures.
The fans operate at two speeds, HI and LO.
The front ventilated seats control buttons are located on the
center instrument panel below the climate controls.
If your vehicle is equipped with a touchscreen, the front
ventilated seats control buttons are also located within the
climate or controls screen of the touchscreen.
•
Press the ventilated seat button
once to choose HI.
•Press the ventilated seat buttona second time to
choose LO.
• Press the ventilated seat buttona third time to turn
the ventilated seat OFF.
NOTE: The engine must be running for the ventilated seats
to operate.
54 GETTING TO KNOW YOUR VEHICLE

•Press the heated steering wheel buttona second time
to turn the heating element off.
NOTE: The engine must be running for the heated steering
wheel to operate.
Vehicles Equipped With Remote Start
On models that are equipped with remote start, the heated
steering wheel can be programmed to come on during a
remote start.
This feature can be programmed through the Uconnect
system. Refer to “Uconnect Settings” in “Multimedia” for
further information.
WARNING!
• Persons who are unable to feel pain to the skin
because of advanced age, chronic illness, diabetes,
spinal cord injury, medication, alcohol use, exhaus-
tion, or other physical conditions must exercise care
when using the steering wheel heater. It may cause
burns even at low temperatures, especially if used
for long periods.
(Continued)
WARNING! (Continued)
•Do not place anything on the steering wheel that
insulates against heat, such as a blanket or steering
wheel covers of any type and material. This may
cause the steering wheel heater to overheat.
DRIVER ADJUSTABLE PEDALS — IF EQUIPPED
The adjustable pedals system is designed to allow a greater
range of driver comfort for steering wheel tilt and seat
position. This feature allows the brake, accelerator, and
clutch pedals (if equipped) to move toward or away from
the driver to provide improved position with the steering
wheel.
The adjustable pedal switch is located to the left side of the
steering column.
62 GETTING TO KNOW YOUR VEHICLE

Summer Operation
The engine cooling system must be protected with a
high-quality antifreeze coolant to provide proper corrosion
protection and to protect against engine overheating. OAT
coolant (conforming to MS.90032) is recommended.
Winter Operation
To ensure the best possible heater and defroster perfor-
mance, make sure the engine cooling system is functioning
properly and the proper amount, type, and concentration
of coolant is used. Use of the Air Recirculation mode
during Winter months is not recommended, because it may
cause window fogging.
Vacation/Storage
Before you store your vehicle, or keep it out of service (i.e.,
vacation) for two weeks or more, run the air conditioning
system at idle for about five minutes, in fresh air with the
blower setting on high. This will ensure adequate system
lubrication to minimize the possibility of compressor dam-
age when the system is started again.
Window Fogging
Vehicle windows tend to fog on the inside in mild, rainy,
and/or humid weather. To clear the windows, select De-
frost or Mix mode and increase the front blower speed. Do
not use the Recirculation mode without A/C for long
periods, as fogging may occur.
Outside Air Intake
Make sure the air intake, located directly in front of the
windshield, is free of obstructions, such as leaves. Leaves
collected in the air intake may reduce airflow, and if they
enter the plenum, they could plug the water drains. In
Winter months, make sure the air intake is clear of ice,
slush, and snow.
Cabin Air Filter
The climate control system filters out dust and pollen from
the air. Contact an authorized dealer to service your cabin
air filter, and to have it replaced when needed.
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GETTING TO KNOW YOUR VEHICLE 105

Premium Instrument Cluster Descriptions
1. Tachometer•Indicates the engine speed in revolutions per minute
(RPM x 1000).
2. Voltmeter •When the engine is running, the gauge indicates the
electrical system voltage. The pointer should stay
within the normal range if the battery is charged. If the
pointer moves to either extreme left or right and
remains there during normal driving, the electrical
system should be serviced.
NOTE: The voltmeter may show a gauge fluctuation at
various engine temperatures. This cycling operation is
caused by the post-heat cycle of the intake manifold heater
system. The number of cycles and the length of the cycling
operation is controlled by the engine control module.
Post-heat operation can run for several minutes, and then
the electrical system and voltmeter needle will stabilize.
3. Oil Pressure Gauge
•The pointer should always indicate some oil pressure
when the engine is running. A continuous high or low
reading under normal driving conditions may indicate a lubrication system malfunction. Immediate service
should be obtained from an authorized dealer.
4. Speedometer •Indicates vehicle speed.
5. Fuel Gauge •The pointer shows the level of fuel in the fuel tank
when the ignition is in the ON/RUN position.
•
The fuel pump symbol points to the side of the
vehicle where the fuel door is located.
6. Instrument Cluster Display
•When the appropriate conditions exist, this display
shows the instrument cluster display messages. Refer
to “Instrument Cluster Display” in “Getting To Know
Your Instrument Panel” for further information.
7. Temperature Gauge •The temperature gauge shows engine coolant tem-
perature. Any reading within the normal range indi-
cates that the engine cooling system is operating
satisfactorily.
• The gauge pointer will likely indicate a higher tem-
perature when driving in hot weather, up mountain
grades, or when towing a trailer. It should not be
4
GETTING TO KNOW YOUR INSTRUMENT PANEL 171

STARTING AND OPERATING
CONTENTS
STARTING THE ENGINE —
GASOLINE ENGINE .....................288
▫ Automatic Transmission ..................288
▫ Tip Start Feature .......................289
▫ Keyless Enter-N-Go — Ignition .............289
▫ Normal Starting Using ENGINE START/STOP
Button ............................. .289
▫ Idle Shutdown — 6.4L Engine Only ..........293
▫ If Engine Fails To Start ..................293
▫ Cold Weather Operation
(Below –22°F Or 30°C) ..................294
▫ After Starting ..........................294
 ENGINE BLOCK HEATER — IF EQUIPPED . . . .294
 ENGINE BREAK-IN RECOMMENDATIONS . . . .295
 PARKING BRAKE .......................295 
AUTOMATIC TRANSMISSION ..............297
▫ Key Ignition Park Interlock ................298
▫ Brake/Transmission Shift Interlock System . . . .299
▫ Eight-Speed Automatic Transmission —
If Equipped ..........................299
▫ Six-Speed Automatic Transmission —
1500 Models Only (If Equipped) ............306
▫ Six-Speed Automatic Transmission —
2500/3500 Models Only ..................315
 FOUR-WHEEL DRIVE OPERATION —
IF EQUIPPED ..........................324
▫ Manually Shifted Transfer Case — If Equipped . .324
▫ Electronically Shifted Transfer Case (Four-Position
Switch) — If Equipped ..................327
▫ Electronically Shifted Transfer Case (Five-Position
Switch) — If Equipped ..................332
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