2021 RAM PROMASTER light

30GETTING TO KNOW YOUR VEHICLE
ILLUMINATED ENTRY
The courtesy lights will turn on when you use the
key fob to unlock the doors or open any door.
They also turn on when unlocking or opening
manually from the driver door cylinder.
The lights will fade to off after approximately
30 seconds, or they will immediately fade to
off once the ignition switch is changed to the
MAR (ACC/ON/RUN) position from the
STOP (OFF/LOCK) position.
NOTE:
The front courtesy overhead console and
door courtesy lights will not turn off if the
dimmer control is in the “Dome ON” position.
The illuminated entry system will not operate
if the dimmer control is in the “Dome OFF”
position.
WIPERS AND WASHERS
WINDSHIELD WIPER OPERATION
The windshield wiper/washer lever is located on
the right side of the steering column. There are
five different modes of operation for the front
windshield wipers. The windshield wiper lever
can be raised or lowered to access the modes.
NOTE:
The windshield wipers/washers will
only operate with the ignition in the
MAR (ACC/ON/RUN) position.

Windshield Wiper/Washer Lever
Intermittent Wipers
Push the lever downward to the first detent and
rotate the center ring to use one of the four
intermittent wiper settings when weather
conditions make a single wiping cycle, with a
variable delay between cycles, desirable.
Push the lever downward to the second detent,
and the wipers will operate at low speed. Push
the lever downward to the third detent, and the
wipers will operate at high speed.
Windshield Washers
To use the washer, pull the windshield wiper/
washer lever toward the steering wheel to
activate. The wipers will activate automatically
for three cycles after the lever is released, and
then resume the intermittent interval previously
selected.
If the lever is pulled while in the off position, the
wipers will operate for three cycles and then
turn off.

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GETTING TO KNOW YOUR VEHICLE33
Temperature Control
Temperature Control regulates the temperature
of the air forced through the climate system.
The temperature increases as you
turn the temperature control knob
clockwise.
The temperature decreases as you
turn the temperature control knob
counterclockwise.
Blower Control
Blower Control regulates the amount
of air forced through the climate
system. There are seven blower
speeds available. The blower speed
increases as you turn the blower control knob
clockwise from the lowest blower setting. The
blower speed decreases as you turn the blower
control knob counterclockwise.
NOTE:
Depending on the configuration, your vehicle
may be equipped with four blower speeds.
Mode Control
Turn the mode control knob to change
the airflow distribution mode. The
airflow distribution mode can be
adjusted so air comes from the
instrument panel outlets, floor outlets, defrost
outlets and demist outlets.
Panel Mode
Air comes from the outlets in the
instrument panel. Each of these
outlets can be individually adjusted to
direct the flow of air. The air vanes of
the center outlets and outboard outlets can be
moved up and down or side to side to regulate
airflow direction. There is a shut off wheel
located below the air vents to shut off or adjust
the amount of airflow from these outlets.
Bi-Level Mode

Air comes from the instrument panel
outlets and floor outlets. A slight
amount of air is directed through
the defrost and side window
demister outlets.
NOTE:
Bi-Level mode is designed under comfort condi
-
tions to provide cooler air out of the panel
outlets and warmer air from the floor outlets.
Floor Mode
Air comes from the floor outlets.
A slight amount of air is directed
through the defrost and side window
demister outlets.
Mix Mode
Air is directed through the floor,
defrost, and side window demister
outlets. This setting works best in cold
or snowy conditions that require extra
heat to the windshield. This setting is good for
maintaining comfort while reducing moisture on
the windshield.
Climate Control OFF
To turn the Climate Controls off, turn
the blower control knob to the OFF (O)
position.
2

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34GETTING TO KNOW YOUR VEHICLE
ADDITIONAL REAR CLIMATE CONTROL —
I
F EQUIPPED
These switches, mounted on the instrument
panel to the left of the steering column, activate
the additional rear heating/air conditioning
system.
NOTE:
These switches must be enabled for operation
by the Upfitter.

Additional Rear Climate Controls Switches

Rear Blower Control
Push this button to turn on the rear
climate controls. An indicator light will
turn on when the rear climate control
is on.
Rear Temperature Control
Rear Passenger Temperature Up
Button To change the temperature in
the rear of the vehicle, push
temperature control up button to
raise the temperature.
Rear Passenger Temperature Down
Button To change the temperature in
the rear of the vehicle, push
temperature control down button to
lower the temperature.
Rear MODE Button
Push this button to change the air
distribution mode for the rear
passengers.
OPERATING TIPS
NOTE:
Refer to the chart at the end of this section for
suggested control settings for various weather
conditions.
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. A solution of 50%
OAT (Organic Additive Technology) coolant that
meets the requirements of FCA Material
Standard MS.90032 and 50% water is
recommended Ú page 268.
Winter Operation
To ensure the best possible heater and
defroster performance, 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.

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38GETTING TO KNOW YOUR VEHICLE
(Continued)
NOTE:
Do not connect devices with power higher than
180 W to the socket. Do not damage the socket
by using unsuitable adapters.
Power Outlet Fuses — Under Hood
AUXILIARY SWITCHES — IF EQUIPPED
Your vehicle may be equipped with two auxiliary
switches located on the instrument panel to the
left of the steering column which can be used to
power various electronic devices. Connections
to the switches are found in the right central
pillar fuse panel at the base of the passenger
side B-pillar.
Auxiliary Upfitter Switches

Auxiliary Switch 1 is configured to constant
battery feed, while Auxiliary Switch 2 is
configured to ignition feed.
For further information on using the auxiliary
switches, please refer to the Ram Body Builders
Guide by accessing www.rambodybuilder.com
and choosing the appropriate links.
1 — F14 Fuse 20 Amp Yellow Front Power Outlet
2 — F09 Fuse 15 Amp Blue Rear Power Outlet
WARNING!
To avoid serious injury or death:
Only devices designed for use in this type of
outlet should be inserted into any 12 Volt
outlet.
Do not touch with wet hands.
Close the lid when not in use and while
driving the vehicle.
If this outlet is mishandled, it may cause an
electric shock and failure.
CAUTION!
Many accessories that can be plugged in
draw power from the vehicle's battery, even
when not in use (i.e., cellular phones, etc.).
Eventually, if plugged in long enough, the
vehicle's battery will discharge sufficiently
to degrade battery life and/or prevent the
engine from starting.
Accessories that draw higher power (i.e.,
coolers, vacuum cleaners, lights, etc.) will
degrade the battery even more quickly.
Only use these intermittently and with
greater caution.
After the use of high power draw accesso -
ries, or long periods of the vehicle not being
started (with accessories still plugged in),
the vehicle must be driven a sufficient
length of time to allow the generator to
recharge the vehicle's battery.
WARNING! (Continued)

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GETTING TO KNOW YOUR INSTRUMENT PANEL45
If equipped with a Uconnect system, some
customer programmable features will display in
the radio Úpage 89.
The system allows the driver to select
information by pushing the following buttons
mounted on the instrument panel to the left of
the steering column:

Display Control Buttons

NOTE:
The MODE button must be pushed prior to
pressing the up arrow and down arrow
buttons .MODE Button:
Push and hold the MODE button for a time
longer than one second to access/select the
information screens or submenu screens of a
main menu item. Push and hold the MODE
button for two seconds to reset displayed/
selected features that can be reset.
Up And Down Arrow Buttons:
Push and release the up and down
arrow buttons to scroll upward and down -
ward through the main menu and submenus
or adjust the illumination on the instrument
panel when the headlights are on.
CHANGE ENGINE OIL — IF EQUIPPED
Your vehicle is equipped with an engine oil
change indicator system. The “Change Engine
Oil” message will display in the instrument
cluster display. 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/RUN position. To turn off the message
temporarily, push and release the
MODE
button . To reset the oil change indicator system
(after performing the scheduled maintenance),
refer to the following procedure.

1. Turn the ignition switch to the ON position (do not start the engine).

2. Fully push the accelerator pedal slowly, three times, within 10 seconds.
3. Turn the ignition switch to the OFF/LOCK position.
NOTE:
If the indicator message illuminates when you
start the vehicle, the oil change indicator
system did not reset. If necessary, repeat this
procedure.
3

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48GETTING TO KNOW YOUR INSTRUMENT PANEL
Start Of Trip Procedure
With the ignition on, push and hold the TRIP
button for over two seconds to reset trip
information.
Exit Trip
To exit the Trip function, push the TRIP button
until all the trip menu items have been
displayed and the display returns to the main
menu.
TRIP FUNCTIONS
Both trip functions are resettable (reset — start
of new trip).
Trip A/Trip B
Trip Distance
Average Fuel Consumption
Average Speed
Travel Time (Driving Time)
NOTE:
“Trip B” functions may be excluded (see “Trip B
Data”). “Range” and “Instantaneous Fuel
Consumption” cannot be reset.
WARNING LIGHTS AND MESSAGES

The warning/indicator lights will illuminate in the
instrument panel together with a dedicated
message 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.

RED WARNING LIGHTS
Seat Belt Reminder Warning Light
When the ignition is first placed in the
ON/RUN or MAR/ON/RUN position, 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
Ú page 164.
Air Bag Warning Light
This light will turn on for four to eight
seconds as a bulb check when the
ignition is placed in the ON/RUN or
MAR/ON/RUN position. 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. This
light will illuminate with a single chime when a
fault with the Air Bag Warning Light has been
detected, it will stay on until the fault is cleared.
If the light comes on intermittently or remains
on while driving, have an authorized dealer
service the vehicle immediately.
Battery Charge Warning Light
This warning light will illuminate when
the battery is not charging properly. If
it stays on while the engine is running,
there may be a malfunction with the
charging system. Contact an authorized dealer
as soon as possible.
This indicates a possible problem with the
electrical system or a related component.

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GETTING TO KNOW YOUR INSTRUMENT PANEL49
Door Open Warning Light
This indicator will illuminate when one
or more door(s) are not fully closed.
NOTE:
If the vehicle is moving and a door is opened,
there will also be a single chime.
Electronic Throttle Control Warning Light
This warning light will illuminate to
inform of a problem with the
Electronic Throttle Control (ETC)
system. If a problem is detected while
the vehicle is running, the light will either stay
on or flash depending on the nature of the
problem. Cycle the ignition when the vehicle is
safely and completely stopped and the
transmission is placed in the PARK (P) position.
The light should turn off. If the light remains on
with the vehicle running, your vehicle will
usually be drivable; however, see an authorized
dealer for service as soon as possible.
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
MAR/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.
Transmission Fault Warning Light
This light will illuminate (together with
a message in the instrument cluster
display and a buzzer) to indicate a
transmission fault. Contact an
authorized dealer if the message remains after
restarting the engine.
Engine Temperature Warning Light
This light warns of an overheated
engine condition. If the engine
coolant temperature is too high, this
indicator will illuminate and a single
chime will sound.

If the light turns on while driving, safely pull over
and stop the vehicle. If the Air Conditioning (A/C)
system is on, turn it off. Also, shift the
transmission into NEUTRAL and idle the vehicle.
If the temperature reading does not return to
normal, turn the engine off immediately and call
for service
Ú
page 206.

Brake Warning Light
This warning 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 capacity 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
3

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50GETTING TO KNOW YOUR INSTRUMENT PANEL
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
conditions. The vehicle should have service
performed, and the brake fluid level checked.
If brake failure is indicated, immediate repair is
necessary.
Vehicles equipped with the Anti-Lock Brake
System (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 approximately 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 position.
NOTE:
This light shows only that the parking brake is
applied. It does not show the degree of brake
application.
Oil Pressure Warning Light
This warning light will illuminate to
indicate low engine oil pressure. If the
light turns on while driving, stop the
vehicle, shut off the engine as soon as
possible, and contact an authorized dealer. A
chime will sound when this light turns on.
Do not operate the vehicle until the cause is
corrected. This light does not indicate how
much oil is in the engine. The engine oil level
must be checked under the hood.
Vehicle Security Warning Light — If
Equipped
This light will flash at a fast rate for
approximately 15 seconds when the
vehicle security system is arming, and
then will flash slowly until the vehicle
is disarmed.
YELLOW WARNING LIGHTS
Immobilizer Fail / VPS Electrical Alarm
Indicator Light
This telltale will illuminate when the
vehicle security system system has
detected an attempt to break into the
vehicle.
NOTE:
After cycling the ignition to the ON/RUN posi -
tion, the Vehicle Security Warning Light could
illuminate if a problem with the system is
detected. This condition will result in the engine
being shut off after two seconds.
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.

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