light Ram 1500 2015 Diesel Supplement

NOTE:The light may flash momentarily during sharp
cornering maneuvers, which change fluid level condi-
tions. The vehicle should have service performed, and
the brake fluid level checked.
If brake failure is indicated, immediate repair is neces-
sary.
WARNING!
Driving a vehicle with the red brake light on is
dangerous. Part of the brake system may have failed.
It will take longer to stop the vehicle. You could have
a collision. Have the vehicle checked immediately.
Vehicles equipped with the ABS, are also equipped with
Electronic Brake Force Distribution (EBD). In the event of
an EBD failure, the Brake Warning Light will turn on
along with the ABS Light. Immediate repair to the ABS
system is required. Operation of the Brake Warning Light can be checked by
turning the ignition switch from the OFF position to the
ON/RUN position. The light should illuminate for ap-
proximately two seconds. The light should then turn off
unless the parking brake is applied or a brake fault is
detected. If the light does not illuminate, have the light
inspected by an authorized dealer.
The light also will turn on when the parking brake is
applied with the ignition switch in the ON/RUN posi-
tion.
NOTE:
This light shows only that the parking brake is
applied. It does not show the degree of brake application.
25. Exhaust Brake Indicator Light
This light indicates that the Exhaust Brake is
active.
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26. Seat Belt Reminder LightWhen the ignition switch is first turned to
ON/RUN, this light will turn on for four to
eight seconds as a bulb check. During the bulb
check, if the driver’s seat belt is unbuckled, a
chime will sound. After the bulb check or when driving,
if the driver’s seat belt remains unbuckled, the seat belt
reminder light will flash or remain on continuously. Refer
to “Occupant Restraints” in “Things To Know Before
Starting Your Vehicle” for further information.
27. Electronic Stability Control (ESC) OFF Indicator
Light — If Equipped
This light indicates that the Electronic Stability
Control (ESC) is in Partial Off or Full Off mode. 28. TOW/HAUL
The TOW HAUL button is located on the center
stack upper switch bank. This light will illumi-
nate when TOW HAUL mode is selected.
29. DEF Gauge
The DEF Gauge displays the actual level of Diesel
Exhaust Fluid in the DEF tank. Diesel Exhaust Fluid
(DEF) is required to maintain normal vehicle operation
and emissions compliance. More information is available
in the Electronic Vehicle Information (EVIC) or Driver
Information Display (DID) section under the heading of
Diesel Exhaust Fluid (DEF) Warning Messages.
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UNDERSTANDING YOUR INSTRUMENT PANEL 161

Instrument Cluster Descriptions
1. Tachometer
The tachometer indicates engine speed in Revolutions
Per Minute (RPM x 1000).
CAUTION!
Do not operate the engine with the tachometer
pointer at high RPM for extended periods. Engine
operation over 3200 RPM (Redline) can result in
significant damage that will not be covered under
warranty.
2. Anti-Lock Brake (ABS) Light This light monitors the Anti-lock Brake System
(ABS). The light will turn on when the ignition
switch is turned to the ON/RUN position and
may stay on for as long as four seconds. If the ABS light remains on or turns on while driving, it
indicates that the anti-lock portion of the brake system is
not functioning and that service is required. However,
the conventional brake system will continue to operate
normally if the BRAKE warning light is not on.
If the ABS light is on, the brake system should be serviced
as soon as possible to restore the benefits of anti-lock
brakes. If the ABS light does not turn on when the
ignition switch is turned to the ON/RUN position, have
the light inspected by an authorized dealer.
3. Malfunction Indicator Light (MIL)
The Malfunction Indicator Light (MIL) is part
of an Onboard Diagnostic (OBDII) system
which monitors the emissions and engine con-
trol system. If the vehicle is ready for emissions
testing, the light will come on when the ignition is first
turned on and remain on, as a bulb check, until the
engine is started. If the vehicle is not ready for emissions
164 UNDERSTANDING YOUR INSTRUMENT PANEL

testing the light will come on when the ignition is first
turned on and remain on for 15 seconds, then blink for 5
seconds, and remain on until the vehicle is started. If the
bulb does not come on during starting, have the condi-
tion investigated promptly.
If this light comes on and remains on while driving, it
suggests a potential engine control problem and the need
for system service.
Although your vehicle will usually be drivable and not
need towing, see your authorized dealer for service as
soon as possible.
CAUTION!
Prolonged driving with the Malfunction Indicator
Light (MIL) on could cause damage to the engine
control system. It also could affect fuel economy and
driveability. If the MIL is flashing, severe catalytic
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CAUTION!(Continued)
converter damage and power loss will soon occur.
Immediate service is required.
WARNING!
A malfunctioning catalytic converter, as referenced
above, can reach higher temperatures than in normal
operating conditions. This can cause a fire if you
drive slowly or park over flammable substances such
as dry plants, wood, cardboard, etc. This could result
in death or serious injury to the driver, occupants or
others.
4. Turn Signal Indicators The arrow will flash with the exterior turn
signal when the turn signal lever is operated.
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UNDERSTANDING YOUR INSTRUMENT PANEL 165

NOTE:
•A continuous chime will sound if the vehicle is driven
more than 1 mile (1.6 km) with either turn signal on.
• Check for an inoperative outside light bulb if either
indicator remains on and does not flash, or flashes at a
rapid rate.
5. Engine Coolant Temperature
This gauge shows the engine coolant temperature. The
gauge pointer will likely show higher temperatures when
driving in hot weather, up mountain grades, or in heavy
stop and go traffic. If the red Warning Light turns on
while driving, safely bring the vehicle to a stop, and turn
off the engine. DO NOT operate the vehicle until the
cause is corrected.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” and you hear continuous chimes,
turn the engine off immediately and call an autho-
rized 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
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166 UNDERSTANDING YOUR INSTRUMENT PANEL

WARNING!(Continued)
Vehicle.” Follow the warnings under the “Cooling
System Pressure Cap” paragraph.
6. Brake Warning Light This light monitors various brake functions,
including brake fluid level and parking brake
application. If the brake light turns on it may
indicate that the parking brake is applied, that
the brake fluid level is low, or that there is a problem with
the Anti-lock Brake System reservoir.
If the light remains on when the parking brake has been
disengaged, and the fluid level is at the full mark on the
master cylinder reservoir, it indicates a possible brake
hydraulic system malfunction or that a problem with the
Brake Booster has been detected by the Anti-Lock Brake
System (ABS)/Electronic Stability Control (ESC) system.
In this case, the light will remain on until the condition has been corrected. If the problem is related to the brake
booster, the ABS pump will run when applying the brake
and a brake pedal pulsation may be felt during each stop.
The dual brake system provides a reserve braking capac-
ity in the event of a failure to a portion of the hydraulic
system. A leak in either half of the dual brake system is
indicated by the Brake Warning Light, which will turn on
when the brake fluid level in the master cylinder has
dropped below a specified level.
The light will remain on until the cause is corrected.
NOTE:
The light may flash momentarily during sharp
cornering maneuvers, which change fluid level condi-
tions. The vehicle should have service performed, and
the brake fluid level checked.
If brake failure is indicated, immediate repair is neces-
sary.
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UNDERSTANDING YOUR INSTRUMENT PANEL 167

WARNING!
Driving a vehicle with the red brake light on is
dangerous. Part of the brake system may have failed.
It will take longer to stop the vehicle. You could have
a collision. Have the vehicle checked immediately.
Vehicles equipped with the ABS, are also equipped with
Electronic Brake Force Distribution (EBD). In the event of
an EBD failure, the Brake Warning Light will turn on
along with the ABS Light. Immediate repair to the ABS
system is required.
Operation of the Brake Warning Light can be checked by
turning the ignition switch from the OFF position to the
ON/RUN position. The light should illuminate for ap-
proximately two seconds. The light should then turn off
unless the parking brake is applied or a brake fault is
detected. If the light does not illuminate, have the light
inspected by an authorized dealer. The light also will turn on when the parking brake is
applied with the ignition switch in the ON/RUN posi-
tion.
NOTE:
This light shows only that the parking brake is
applied. It does not show the degree of brake application.
7. High Beam Indicator
This indicator shows that headlights are on
high beam. Push the multifunction lever for-
ward to switch the headlights to high beam,
and pull toward yourself (normal position) to return to
low beam.
8. Seat Belt Reminder Light
When the ignition switch is first turned to
ON/RUN, this light will turn on for four to
eight seconds as a bulb check. During the bulb
check, if the driver’s seat belt is unbuckled, a
chime will sound. After the bulb check or when driving,
168 UNDERSTANDING YOUR INSTRUMENT PANEL

if the driver’s seat belt remains unbuckled, the seat belt
reminder light will flash or remain on continuously. Refer
to “Occupant Restraints” in “Things To Know Before
Starting Your Vehicle” for further information.
9. Air Bag Warning LightThis light will turn on for four to eight seconds
as a bulb check when the ignition switch is first
turned to ON/RUN. If the light is either not on
during starting, stays on, or turns on while
driving, have the system inspected at an authorized
dealer as soon as possible. Refer to “Occupant Restraints”
in “Things To Know Before Starting Your Vehicle” for
further information.
10. Engine Oil Pressure
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.
If the gauge pointer moves to either extreme of the gauge,
the Check Gauges indicator will illuminate and a single
chime will sound.
11. Speedometer
The speedometer shows the vehicle speed in miles per
hour and/or kilometers per hour (mph/km/h).
12. Park/Headlight ON Indicator — If Equipped
This indicator will illuminate when the park
lights or headlights are turned on.
13. Cargo Light The cargo light will illuminate when the cargo
light is activated by pressing the cargo light
button on the headlight switch.
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UNDERSTANDING YOUR INSTRUMENT PANEL 169

14. Fuel Gauge
Shows level of fuel in tank when ignition switch is in the
ON/RUN position.
15. Vehicle Security Light — If EquippedThis light will flash at a fast rate for approxi-
mately 15 seconds, when the vehicle security
alarm is arming, and then will flash slowly
until the vehicle is disarmed.
16. Tire Pressure Monitoring Telltale Light
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.)
As an added safety feature, your vehicle has been
equipped with a Tire Pressure Monitoring System
(TPMS) that illuminates a low tire pressure telltale when
one or more of your tires is significantly under-inflated.
Accordingly, when the low tire pressure telltale illumi-
nates, you should stop and check your tires as soon as
possible, and inflate them to the proper pressure. Driving
on a significantly under-inflated tire causes the tire to
overheat and can lead to tire failure. Under-inflation also
reduces fuel efficiency and tire tread life, and may affect
the vehicle’s handling and stopping ability.
Please note that the TPMS is not a substitute for proper
tire maintenance, and it is the driver ’s responsibility to
maintain correct tire pressure, even if under-inflation has
not reached the level to trigger illumination of the TPMS
low tire pressure telltale.
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17. Front Fog Light Indicator — If EquippedThis indicator will illuminate when the front
fog lights are on.
18. Driver Information Display (DID)
The Driver Information Display (DID) features an inter-
active display that is located in the instrument cluster.
For further information, refer to “Driver Information
Display (DID)” in this section.
19. Transmission Gear Position Indicator
The Transmission Gear Position Indicator is self-
contained within the instrument cluster. It displays the
gear range of the automatic transmission. NOTE:
The highest available transmission gear is dis-
played in the lower right corner of the DID whenever the
Electronic Range Select (ERS) feature is active. Use the
+/- selector on the shift lever or steering wheel to activate
ERS. Refer to “Automatic Transmission” in “Starting And
Operating” for further information.
20. Driver Information Display (DID) Menu
Driver Information Display (DID) features an interactive
display of the main menu’s that is located in the instru-
ment cluster. For further information, refer to “Driver
Information Display (DID)” in this section.
21. Electronic Stability Control (ESC) OFF Indicator
Light — If Equipped
This light indicates that the Electronic Stability
Control (ESC) is in Partial Off or Full Off mode.
172 UNDERSTANDING YOUR INSTRUMENT PANEL