2020 Ram 3500 Chassis Cab bulb

6
REFUELING THE VEHICLE —
DIESEL ENGINE ................................................. 269 Fuel Filler Cap ............................................269
Avoid Using Contaminated Fuel ................269Bulk Fuel Storage — Diesel Fuel ...............269
Diesel Exhaust Fluid ..................................270Diesel Exhaust Fluid Storage ....................270
Adding Diesel Exhaust Fluid (DEF) ........... 271
VEHICLE LOADING .......................................... 273
Gross Vehicle Weight Rating (GVWR) ......273Payload .......................................................273Gross Axle Weight Rating (GAWR) ............273
Tire Size ......................................................273
Rim Size......................................................273
Inflation Pressure ......................................273
Curb Weight................................................273
Loading .......................................................273
TRAILER TOWING ............................................ 274
Common Towing Definitions .....................274Trailer Hitch Type and Maximum
Trailer Weight .............................................278 Trailer Towing Weights (Maximum Trailer
Weight Ratings) .......................................279 Trailer And Tongue Weight .......................279
Towing Requirements ...............................279
Towing Tips ................................................284 SNOWPLOW ....................................................... 286
Before Plowing ........................................... 286
Snowplow Prep Package Model
Availability .................................................. 286 Over The Road Operation With Snowplow
Attached ..................................................... 287 Operating Tips ............................................ 287General Maintenance................................ 287
RECREATIONAL TOWING (BEHIND
MOTORHOME, ETC.) .......................................... 288
Towing This Vehicle Behind Another
Vehicle ........................................................ 288 Recreational Towing — Two-Wheel Drive
Models ........................................................ 289 Recreational Towing — Four-Wheel Drive
Models ........................................................ 289
DRIVING TIPS ...................................................... 292
Driving On Slippery Surfaces ................... 292
Driving Through Water .............................. 292
IN CASE OF EMERGENCY
HAZARD WARNING FLASHERS .................... 294
ASSIST AND SOS SYSTEM — IF EQUIPPED..... 294General Information .................................. 299
BULB REPLACEMENT ......................................300
Replacement Bulbs .............................. 300
Replacing Exterior Bulbs ........................... 301
FUSES ..................................................................305
Power Distribution Center ......................... 306 JACKING AND TIRE CHANGING ...................... 314
4500/5500 Models .................................. 315
Preparations For Jacking .......................... 315
Jacking Instructions 4500 And
5500 Series ............................................... 315 To Stow The Flat Or Spare —
If Equipped ................................................ 318 Hub Caps/Wheel Covers —
If Equipped ............................................... 318
JUMP STARTING ............................................... 319
Preparations For Jump Start ..................... 320
Jump Starting Procedure .......................... 320
IF YOUR ENGINE OVERHEATS ......................... 321
GEAR SELECTOR OVERRIDE — 6–SPEED
TRANSMISSION ................................................ 322
MANUAL PARK RELEASE — 8 – SPEED
TRANSMISSION ................................................ 323
FREEING A STUCK VEHICLE ............................ 324
TOWING A DISABLED VEHICLE ...................... 326
Two-Wheel Drive Models ........................... 327
Four-Wheel Drive Models .......................... 327
Emergency Tow Hooks — If Equipped ...... 328
ENHANCED ACCIDENT RESPONSE SYSTEM
(EARS) ................................................................ 328
EVENT DATA RECORDER (EDR) ....................... 328

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22GETTING TO KNOW YOUR VEHICLE
Additional features, such as windshield
wipers, will also not be available while the
vehicle is in the Remote Start mode.
The engine can be started two consecutive
times (two 15 minute cycles) with the key
fob. However, the ignition switch must be
placed in the ON/RUN position before you
can repeat the start sequence for a third
cycle.
To Exit Remote Start Mode Without Driving
The Vehicle
Push and release the Remote Start button one
time or allow the engine to run for the entire
15 minute cycle.
NOTE:
To avoid unintentional shut downs, the system
will disable for two seconds after receiving a
valid Remote Start request.
To Exit Remote Start Mode And Drive The
Vehicle
To exit Remote Start Mode and drive the vehicle
before the end of the 15 minute cycle, push and
release the unlock button on the key fob to
unlock the door and disarm the vehicle security alarm System (if equipped). Then, prior to the
end of the 15 minute cycle, place the ignition in
the ON/RUN position.
NOTE:
The ignition switch must be in the ON/RUN posi
-
tion in order to drive the vehicle.
Remote Start Comfort Systems — If
Equipped
When remote start is activated, the heated
steering wheel, and driver heated seat features
will automatically turn on in cold weather. In
warm weather, the driver vented seat feature
will automatically turn on when the remote start
is activated. These features will stay on through
the duration of remote start or until the ignition
switch is placed in the ON/RUN position.
NOTE:
The Remote Start Comfort System can be acti -
vated and deactivated through the Uconnect
System. Refer to “Uconnect Settings” in “Multi -
media” for further information on Remote Start
Comfort System operation.
SENTRY KEY
The Sentry Key Immobilizer system prevents
unauthorized vehicle operation by disabling the
engine. The system does not need to be armed
or activated. Operation is automatic, regardless
of whether the vehicle is locked or unlocked.
The system uses a key fob, keyless push button
ignition and a Radio Frequency (RF) receiver to
prevent unauthorized vehicle operation. There -
fore, only key fobs that are programmed to the
vehicle can be used to start and operate the
vehicle. The system cannot reprogram a key fob
obtained from another vehicle.
After placing the ignition switch in the ON/RUN
position, the vehicle security light will turn on for
three seconds for a bulb check. If the light
remains on after the bulb check, it indicates
that there is a problem with the electronics. In
addition, if the light begins to flash after the
bulb check, it indicates that someone
attempted to start the engine with an invalid key
fob. In the event that a valid key fob is used to
start the engine but there is an issue with the
vehicle electronics, the engine will start and
shut off after two seconds.

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GETTING TO KNOW YOUR VEHICLE47
NOTE:
This feature can be programmed through the
Uconnect system. Refer to “Uconnect Settings”
in “Multimedia” for further information.
Headlight Delay
To aid in your exit, your vehicle is equipped with
a headlight delay that will leave the headlights
on for approximately up to 90 seconds. This
delay is initiated when the ignition is turned off
while the headlight switch is on, and then the
headlight switch is cycled off. Headlight delay
can be canceled by either turning the headlight
switch on then off, or by placing the ignition in
the ON/RUN position.
NOTE:
This feature can be programmed through the
Uconnect system. Refer to “Uconnect Settings”
in “Multimedia” for further information.
Lights-On Reminder
If the headlights, parking lights, or cargo lights
are left on after the ignition is placed in the OFF
position, a chime will sound when the driver’s
door is opened.
Front Fog Lights — If Equipped
To activate the front fog lights, turn on the
parking lights or low beam headlights and push
in the center of the headlight switch control
knob. Pushing the headlight switch control knob
a second time will turn the front fog lights off.

Front Fog Light Switch

Turn Signals
Move the multifunction lever up or down and
the arrows on each side of the instrument
cluster display will flash to show proper opera -
tion of the front and rear turn signal lights.
NOTE:
If either light remains on and does not flash, or
there is a very fast flash rate, check for a defec -
tive outside light bulb. If an indicator fails to light when the lever is moved, it would suggest
that the indicator bulb is defective.
Lane Change Assist — If Equipped
Tap the multifunction lever up or down once,
without moving beyond the detent, and the turn
signal (right or left) will flash three times then
automatically turn off.
Cargo Lights/Trailer Spotter Lights — If
Equipped
The cargo lights (if equipped) and trailer spotter
lights (if equipped) are turned on by pushing the
cargo lights button located on the lower half of
the headlight switch.

Cargo Lights Button On Headlight Switch

2

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108GETTING TO KNOW YOUR INSTRUMENT PANEL
The battery was discharged by an electrical
load left on when the vehicle was parked.
The battery was used for an extended period
with the engine not running to supply radio,
lights, chargers, +12 Volt portable appli-
ances like vacuum cleaners, game consoles
and similar devices.
What to do when an electrical load reduction
action message is present (“Battery Saver On”
or “Battery Saver Mode”)
During a trip:
Reduce power to unnecessary loads if
possible:
Turn off redundant lights (interior or exte -
rior).
Check what may be plugged in to power outlets +12 Volts, 115 Volt AC, USB ports.
Check HVAC settings (blower, tempera -
ture).
Check the audio settings (volume). After a trip:
Check if any aftermarket equipment was
installed (additional lights, upfitter electrical
accessories, audio systems, alarms) and
review specifications if any (load and Ignition
Off Draw currents).
Evaluate the latest driving cycles (distance,
driving time and parking time).
The vehicle should have service performed if
the message is still present during consecu
-
tive trips and the evaluation of the vehicle
and driving pattern did not help to identify the
cause.
WARNING LIGHTS AND MESSAGES
The warning/indicator lights will illuminate in
the instrument panel together with a dedicated
message and/or acoustic signal when appli -
cable. These indications are indicative and
precautionary and as such must not be consid -
ered as exhaustive. Always refer to the informa-
tion 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 tell -
tales are optional and may not appear.
Red Warning Lights
Seat Belt Reminder Warning Light
This warning light indicates when the
driver or passenger seat belt is
unbuckled. When the ignition is first
placed in the ON/RUN or ACC/ON/
RUN position and if the driver’s seat belt is
unbuckled, a chime will sound and the light will
turn on. When driving, if the driver or front
passenger seat belt remains unbuckled, the
Seat Belt Reminder Light will flash or remain on
continuously and a chime will sound.
Refer to “Occupant Restraint Systems” in
“Safety” for further information.
Air Bag Warning Light
This warning light will illuminate to
indicate a fault with the air bag, and
will turn on for four to eight seconds
as a bulb check when the ignition is
placed in the ON/RUN or ACC/ON/RUN posi -
tion. This light will illuminate with a single chime
when a fault with the air bag has been detected,
it will stay on until the fault is cleared. If the light
is either not on during startup, stays on, or turns
on while driving, have the system inspected at
an authorized dealer as soon as possible.

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GETTING TO KNOW YOUR INSTRUMENT PANEL111
If the light continues to flash when the vehicle 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. The light will come
on when the ignition is placed in the ON/RUN or
ACC/ON/RUN position and remain on briefly as
a bulb check. If the light does not come on
during starting, have the system checked by an
authorized dealer.
Electric Power Steering Fault Warning Light
This warning light will turn on when
there's a fault with the Electric Power
Steering (EPS) system. Refer to
“Power Steering” in “Starting And
Operating” for further information.
Trailer Brake Disconnected Warning Light
This warning light will illuminate when
the Trailer Brake has been discon -
nected.
Refer to “Trailer Towing” in “Starting And Oper -
ating” for further information.
Transmission Temperature Warning Light — If
Equipped
This warning light will illuminate to
warn of a high transmission fluid
temperature. This may occur with
strenuous usage such as trailer
towing. If this light turns on, stop the vehicle and
run the engine at idle or slightly faster, with the
transmission in PARK or NEUTRAL, until the
light turns off. Once the light turns off, you may
continue to drive normally.
Door Open Warning Light
This indicator will illuminate when a
door is ajar/open and not fully closed.
NOTE:
If the vehicle is moving there will also be a single
chime.
Yellow Warning Lights
Adaptive Cruise Control (ACC) Fault Warning
Light — If Equipped
This warning light will illuminate to
indicate a fault in the ACC system.
Contact a local authorized dealer for
service.
For further information, refer to “Adaptive
Cruise Control (ACC)” in “Starting And Oper -
ating.”
WARNING!
Continued operation with reduced assist
could pose a safety risk to yourself and
others. Service should be obtained as soon
as possible.WARNING!
If you continue operating the vehicle when
the Transmission Temperature Warning Light
is illuminated you could cause the fluid to boil
over, come in contact with hot engine or
exhaust components and cause a fire.
CAUTION!
Continuous driving with the Transmission
Temperature Warning Light illuminated will
eventually cause severe transmission
damage or transmission failure.
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112GETTING TO KNOW YOUR INSTRUMENT PANEL
Engine Check/Malfunction Indicator Warning
Light (MIL)
The Engine Check/Malfunction Indi-
cator Light (MIL) is a part of an
Onboard Diagnostic System called
OBD II that monitors engine and auto -
matic transmission control systems. This
warning light will illuminate when the ignition is
in the ON/RUN position before engine start. If
the bulb does not come on when turning the
ignition switch from OFF to ON/RUN, have the
condition checked promptly.
Certain conditions, such as a loose or missing
gas cap, poor quality fuel, etc., may illuminate
the light after engine start. The vehicle should
be serviced if the light stays on through several
typical driving styles. In most situations, the
vehicle will drive normally and will not require
towing.
When the engine is running, the MIL may flash
to alert serious conditions that could lead to
immediate loss of power or severe catalytic
converter damage. The vehicle should be
serviced by an authorized dealer as soon as
possible if this occurs.
Electronic Stability Control (ESC) Active
Warning Light — If Equipped
This warning light will indicate when
the Electronic Stability Control system
is Active. The “ESC Indicator Light” in
the instrument cluster will come on
when the ignition is placed in the ON/RUN or
ACC/ON/RUN position, and when ESC is acti -vated. It should go out with the engine running.
If the “ESC Indicator Light” comes on continu
-
ously with the engine running, a malfunction
has been detected in the ESC system. If this
warning light remains on after several ignition
cycles, and the vehicle has been driven several
miles (kilometers) at speeds greater than
30 mph (48 km/h), see an authorized dealer as
soon as possible to have the problem diag -
nosed and corrected.
The “ESC OFF Indicator Light” and the “ESC
Indicator Light” come on momentarily each
time the ignition is placed in the ON/RUN or
ACC/ON/RUN position.
The ESC system will make buzzing or clicking
sounds when it is active. This is normal; the
sounds will stop when ESC becomes inactive.
This light will come on when the vehicle is in
an ESC event.
Electronic Stability Control (ESC) OFF
Warning Light — If Equipped
This warning light indicates the Elec -
tronic Stability Control (ESC) is off.
Each time the ignition is turned to ON/
RUN or ACC/ON/RUN, the ESC system
will be on, even if it was turned off previously.
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.
CAUTION!
Prolonged driving with the Malfunction
Indicator Light (MIL) on could cause damage
to the vehicle control system. It also could
affect fuel economy and driveability. If the
MIL is flashing, severe catalytic converter
damage and power loss will soon occur.
Immediate service is required.

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GETTING TO KNOW YOUR INSTRUMENT PANEL117
ECO Mode Indicator Light — If Equipped
This light will turn on when ECO Mode
is active.
Park/Headlight On Indicator Light
This indicator light will illuminate
when the park lights or headlights are
turned on.
Refer to “Exterior Lights” in “Getting To Know
Your Vehicle” for further information.
Front Fog Indicator Light — If Equipped
This indicator light will illuminate
when the front fog lights are on.
Refer to “Exterior Lights” in “Getting
To Know Your Vehicle” for further
information.
Turn Signal Indicator Lights
When the left or right turn signal is
activated, the turn signal indicator will
flash independently and the corre -
sponding exterior turn signal lamps
will flash. Turn signals can be activated when
the multifunction lever is moved down (left) or
up (right). 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 flashes at a rapid rate.
If equipped with fog lamps, the fog lamp
on the side of the activated turn signal
will also illuminate to provide additional
light when turning.
Cruise Control Set Indicator Light — If
Equipped
This indicator light will illuminate
when the cruise control is set to the
desired speed. Refer to “Speed
Control” in “Starting And Operating”
for further information.
Automatic Diesel Exhaust Brake Indicator
Light — If Equipped
This indicator light will illuminate
when the Diesel Exhaust Brake has
been activated, and has switched to
Automatic mode. Refer to “Diesel Exhaust Brake (Engine
Braking)” in “Starting And Operating” for further
information.
White Indicator Lights
Adaptive Cruise Control (ACC) Ready Light —
If Equipped
This light will illuminate when the
vehicle equipped with Adaptive Cruise
Control (ACC) has been turned on but
not set.
Refer to “Adaptive Cruise Control (ACC) — If
Equipped” in “Starting And Operating” for
further information.
Cruise Control Ready Indicator
This indicator light will illuminate
when the cruise control is ready, but
not set. Refer to “Speed Control” in
“Starting And Operating” for further
information.
Set Speed Display
The Set Speed Display indicator light
indicates the set speed for the Speed
Control and Adaptive Cruise Control
(ACC) settings.
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GETTING TO KNOW YOUR INSTRUMENT PANEL119
EMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS
In some localities, it may be a legal requirement
to pass an inspection of your vehicle's emis-
sions control system. Failure to pass could
prevent vehicle registration.
For states that require an Inspection
and Maintenance (I/M), this check
verifies the “Malfunction Indicator
Light (MIL)” is functioning and is not
on when the engine is running, and that the
OBD II system is ready for testing.
Normally, the OBD II system will be ready. The
OBD II system may not be ready if your vehicle
was recently serviced, recently had a depleted
battery or a battery replacement. If the OBD II
system should be determined not ready for the
I/M test, your vehicle may fail the test.
Your vehicle has a simple ignition actuated test,
which you can use prior to going to the test
station. To check if your vehicle's OBD II system
is ready, you must do the following:
1. Cycle the ignition switch to the ON position,
but do not crank or start the engine.

NOTE:
If you crank or start the engine, you will have to
start this test over.
2. As soon as you cycle the ignition switch to the ON position, you will see the “Malfunc -
tion Indicator Light (MIL)” symbol come on
as part of a normal bulb check.
3. Approximately 15 seconds later, one of two things will happen:
The MIL will flash for about 10 seconds
and then return to being fully illuminated
until you turn OFF the ignition or start the
engine. This means that your vehicle's
OBD II system is not ready and you
should not proceed to the I/M station.
The MIL will not flash at all and will
remain fully illuminated until you place
the ignition in the off position or start the
engine. This means that your vehicle's
OBD II system is ready and you can
proceed to the I/M station. If your OBD II system is not ready,
you should
see an authorized dealer or repair facility. If your
vehicle was recently serviced or had a battery
failure or replacement, you may need to do
nothing more than drive your vehicle as you
normally would in order for your OBD II system
to update. A recheck with the above test routine
may then indicate that the system is now ready.
Regardless of whether your vehicle's OBD II
system is ready or not, if the MIL is illuminated
during normal vehicle operation you should
have your vehicle serviced before going to the I/
M station. The I/M station can fail your vehicle
because the MIL is on with the engine running.
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