2016 Ram 2500 cooling

Exhaust Gas
WARNING!
Exhaust gases can injure or kill. They contain carbon
monoxide (CO), which is colorless and odorless.
Breathing it can make you unconscious and can
eventually poison you. To avoid breathing (CO),
follow these safety tips:
•Do not run the engine in a closed garage or in
confined areas any longer than needed to move
your vehicle in or out of the area.
• If you are required to drive with the trunk/liftgate/
rear doors open, make sure that all windows are
closed and the climate control BLOWER switch is
set at high speed. DO NOT use the recirculation
mode.
(Continued)
WARNING! (Continued)
•If it is necessary to sit in a parked vehicle with the
engine running, adjust your heating or cooling
controls to force outside air into the vehicle. Set the
blower at high speed.
The best protection against carbon monoxide entry into
the vehicle body is a properly maintained engine exhaust
system.
Whenever a change is noticed in the sound of the exhaust
system, when exhaust fumes can be detected inside the
vehicle, or when the underside or rear of the vehicle is
damaged, have a competent mechanic inspect the com-
plete exhaust system and adjacent body areas for broken,
damaged, deteriorated, or mispositioned parts. Open
seams or loose connections could permit exhaust fumes
to seep into the passenger compartment. In addition,
inspect the exhaust system each time the vehicle is raised
for lubrication or oil change. Replace as required.2
THINGS TO KNOW BEFORE STARTING YOUR VEHICLE 119

1. Tachometer•Indicates the engine speed in revolutions per minute
(RPM x 1000).
2. Electronic Vehicle Information Center (EVIC) Display •When the appropriate conditions exist, this display
shows the Electronic Vehicle Information Center
(EVIC) messages. Refer to “Electronic Vehicle Infor-
mation Center” in “Understanding Your Instrument
Panel” for further information.
3. Speedometer •Indicates vehicle speed.
4. Fuel Gauge •The pointer shows the level of fuel in the fuel tank
when the Keyless Push Button Ignition is in the
ON/RUN position. •
The fuel pump symbol points to the side of the
vehicle where the fuel door is located.
5. 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
allowed to exceed the upper limits of the normal
operating range.
290 UNDERSTANDING YOUR INSTRUMENT PANEL

CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge reads
“H” pull over and stop the vehicle. Idle the vehicle
with the air conditioner turned off until the pointer
drops back into the normal range. If the pointer
remains on the “H”, turn the engine off immediately
and call an authorized dealer for service.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call an authorized dealer
for service if your vehicle overheats. If you decide to
look under the hood yourself, see “Maintaining Your
Vehicle”. Follow the warnings under the Cooling
System Pressure Cap paragraph.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 291

5. Fuel Gauge•The pointer shows the level of fuel in the fuel tank
when the Keyless Push Button 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. Driver Information Display (DID) •When the appropriate conditions exist, this
display shows the Driver Information Dis-
play (DID) messages. Refer to “Driver In-
formation Display” in “Understanding
Your Instrument Panel” for further infor-
mation.
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
allowed to exceed the upper limits of the normal
operating range.
CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge reads
“H” pull over and stop the vehicle. Idle the vehicle
with the air conditioner turned off until the pointer
drops back into the normal range. If the pointer
remains on the “H”, turn the engine off immediately
and call an authorized dealer for service.
294 UNDERSTANDING YOUR INSTRUMENT PANEL

WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call an authorized dealer
for service if your vehicle overheats. If you decide to
look under the hood yourself, see “Maintaining Your
Vehicle”. Follow the warnings under the Cooling
System Pressure Cap paragraph.
WARNING AND INDICATOR LIGHTS
IMPORTANT:The warning / indicator lights switch on
in the instrument panel together with a dedicated mes-
sage and/or acoustic signal when applicable. These
indications are indicative and precautionary and as such
must not be considered as exhaustive and/or alternative
to the information contained in the Owner ’s Manual,
which you are advised to read carefully in all cases.
Always refer to the information in this chapter in the
event of a failure indication.
All active telltales will display first if applicable. The
system check menu may appear different based upon
equipment options and current vehicle status. Some
telltales are optional and may not appear.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 295

•Reduce Speed To Maintain Selected Ride Height
• Air Suspension System Cooling Down Please Wait
• Vehicle Cannot Be Lowered Door Open
• Off Road 2 Watch For Clearance
• Entry/Exit Watch For Clearance
• Air Suspension Temporarily Disabled For Jacking And
Tire Change
• Battery Low Start Engine To Change Ride Height
• Stop/Start Ready – If Equipped
• Stop/Start Not Ready – If Equipped •
Stop/Start Not Ready Hood Open – If Equipped
• Stop/Start Not Ready Battery Charging – If Equipped
• Stop/Start Not Ready Trailer Tow/Haul Selected – If
Equipped
• Stop/Start Not Ready 4WD/Low Range Selected – If
Equipped
• Stop/Start Not Ready Fuel Level Low – If Equipped
• Stop/Start Not Ready Steep Incline – If Equipped
• Stop/Start Not Ready Extreme Outside Temperature –
If Equipped
• Stop/Start Not Ready Engine Temperature Too High –
If Equipped
4
UNDERSTANDING YOUR INSTRUMENT PANEL 343

•Stop/Start Not Ready Engine Temperature Too Low –
If Equipped
• Stop/Start Not Ready Driver Seatbelt Unbuckled – If
Equipped
• Stop/Start Not Ready Driver Door Open – If Equipped
• Stop/Start Not Ready Cabin Cooling Or Heating – If
Equipped
• Stop/Start Not Ready Not Ready Max Cooling Or
Heating – If Equipped
• Stop/Start Not Ready Max Cooling Or Heating Se-
lected – If Equipped
• Stop/Start Not Ready Front Defrost Selected – If
Equipped
• Stop/Start Not Ready Steering Wheel Turned – If
Equipped •
Stop/Start Autostop Active – If Equipped
• Stop/Start To Restart Push Clutch Or Shift To Neutral
– If Equipped
• Stop/Start Req’d Fault Detected – If Equipped
• Stop/Start Cannot Autostart Hood Open – If
Equipped
• Stop/Start Unavailable Service Battery – If Equipped
• Stop/Start Unavailable Service Stop/Start System – If
Equipped
• Stop/Start To Restart Shift Out Of Park – If Equipped
• Stop/Start Off – If Equipped
• Autostop Duration – If Equipped
344 UNDERSTANDING YOUR INSTRUMENT PANEL

•Entry/Exit Ride Height Achieved
• Selected Ride Height Not Permitted
• Service Air Suspension System Immediately
• Reduce Speed To Maintain Selected Ride Height
• Air Suspension System Cooling Down Please Wait
• Vehicle Cannot Be Lowered Door Open
• Off Road 2 Watch For Clearance
• Entry/Exit Watch For Clearance
• Air Suspension Temporarily Disabled For Jacking And
Tire Change
• Battery Low Start Engine To Change Ride Height
• Stop/Start Ready – If Equipped
• Stop/Start Not Ready – If Equipped •
Stop/Start Not Ready Hood Open – If Equipped
• Stop/Start Not Ready Battery Charging – If Equipped
• Stop/Start Not Ready Trailer Tow/Haul Selected – If
Equipped
• Stop/Start Not Ready 4WD/Low Range Selected – If
Equipped
• Stop/Start Not Ready Fuel Level Low – If Equipped
• Stop/Start Not Ready Steep Incline – If Equipped
• Stop/Start Not Ready Extreme Outside Temperature –
If Equipped
• Stop/Start Not Ready Engine Temperature Too High –
If Equipped
• Stop/Start Not Ready Engine Temperature Too Low –
If Equipped
4
UNDERSTANDING YOUR INSTRUMENT PANEL 361