2023 RAM PROMASTER service indicator

10 Hood Open Warning Light Úpage 68
Rear Cargo Door Warning Light Úpage 68
Swivel Seat (Driver or Passenger) Unlocked Warning Light Úpage 68
Yellow Warning Lights
Immobilizer Fail / VPS Electrical Alarm Warning Light Úpage 69
Drowsy Driver Detected System Fault Warning Light Úpage 69
Tire Pressure Monitoring System (TPMS) Warning Light Úpage 70
Electronic Stability Control (ESC) Warning Light Úpage 69
Red Warning Lights
Electronic Stability Control (ESC) OFF Warning Light
Úpage 69
Engine Check/Malfunction Indicator Warning Light (MIL) Úpage 69
Anti-Lock Brake System (ABS) Warning Light Úpage 68
Service Forward Collision Warning (FCW) Light Úpage 70
Service Required/Call For Service Warning Light Úpage 70
Speed Limiter Fail Warning Light Úpage 70
Swivel Seat (Driver or Passenger) Fail Warning Light Úpage 70
Transmission Temperature Warning Light Úpage 71
Yellow Warning Lights

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11
Towing Hook Breakdown Warning Light Úpage 71
Adaptive Cruise Control (ACC) Fault Warning Light Úpage 68
Service Active Lane Management Warning Light Úpage 70
Low Fuel Warning Light Úpage 69
Yellow Indicator Lights
Forward Collision Warning (FCW) OFF Indicator Light Úpage 72
TOW/HAUL Indicator Light Úpage 72
Keyless System Failure Indicator Light Úpage 72
Yellow Warning Lights
Rain Sensor Failure Indicator Light
Úpage 72
Exterior Lights Failure Indicator Light Úpage 72
Fuel Cutoff Failure Indicator Light Úpage 72
Green Indicator Lights
Turn Signal/Hazard Warning Indicator Lights Úpage 73
Front Fog Indicator Light Úpage 72
Parking/Headlights On Indicator Light Úpage 73
Cruise Control Indicator Light Úpage 72
Yellow Indicator Lights1

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GETTING TO KNOW YOUR VEHICLE43
Climate Control OFF Button
Press and release this button to turn the
Climate Control ON/OFF.
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.

OPERATING TIPS
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. OAT coolant (conforming to
MS.90032) is recommended.
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.
Vacation Storage
For information on maintaining the Climate Control
system when the vehicle is being stored for an
extended period of time, see Ú page 265.
Window Fogging

Vehicle windows tend to fog on the inside in mild, rainy,
and/or humid weather. To clear the windows, select
Defrost 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 air distribution
box, 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.
2

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GETTING TO KNOW YOUR INSTRUMENT PANEL65
Security – If Equipped
By selecting the item “Security” you can make the
following adjustments (if equipped):
Passenger Airbag: Front passenger air bag may
be enabled or disabled
Speed Warning: Set the vehicle speed limit,
which the driver is notified through a visual and
acoustic signaling (display of a message and a
symbol on the display)
Seat Belt Reminder: This function is only view -
able when the Seat Belt Reminder (SBR) system
is active
Hill Start Assist: Activation/Deactivation of the
Hill Start Assist system
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
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.

Safety & Assitance
Warning Buzzer Volume
—Off, Low, Medium, High
Backup Alarm —On / Off
Vehicle Shut Off ——By selecting the item “Vehicle Shut
Off”, you can turn off the engine from
the instrument cluster. This feature is
available in the event of a Keyless
Ignition system failure, and will
display instructions for turning off the
engine via the instrument cluster
display controls.
*If Equipped
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66GETTING TO KNOW YOUR INSTRUMENT PANEL
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 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.
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.
Door Open Warning Light

This indicator will illuminate when one or
more door(s) are not fully closed. A pop-up
appears on the instrument cluster display
showing which door is open.

NOTE:If the vehicle is moving and a door is opened, there
will also be a single chime.
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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GETTING TO KNOW YOUR INSTRUMENT PANEL67
Drowsy Driver Detected Warning Light —
If Equipped
Drowsy driver detection helps to avoid
crashes caused by fatigue by advising
drivers to take a break in time. Once a
Drowsy Driver is detected, A pop-up will
display continuously until the driver presses the
OK button to clear.
Once the pop-up message is cleared, it is stored
until the condition is no longer true.
Electric Power Steering (EPS) Fault
Warning Light
This warning light will turn on when
there's a fault with the EPS system
Ú page 85.
Electronic Throttle Control (ETC) Warning
Light

This warning light will illuminate to inform of
a problem with the 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.

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 216.

Generic Warning Light
The Generic Warning Light will illuminate
to signal the failure of one or more safety
warning lights with a corresponding
message. The safety systems that may
cause the Generic Warning Light to illuminate
include but are not limited too: Seat belt Reminder,
Electric Park Brake, Brakes, Air Bag, and Swivel
Seat failure.
The telltale will remain on in case of swivel seat
failure and will blink in case of Air Bag Warning
Light Failure. Contact an authorized dealer
immediately for service.
WARNING!
Continued operation with reduced assist could
pose a safety risk to yourself and others. Service
should be obtained as soon as possible.
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GETTING TO KNOW YOUR INSTRUMENT PANEL69
Immobilizer Fail / VPS Electrical Alarm
Warning Light
This telltale will illuminate when the
vehicle security system has detected an
attempt to break into the vehicle.
NOTE:After cycling the ignition to the ON/RUN position,
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.
Drowsy Driver Detected System Fault
Warning Light — If Equipped
This warning light will illuminate when the
Drowsy Driver Detected System is not
operating correctly and requires service.
Please see an authorized dealer.
Electronic Stability Control (ESC) Warning
Light

The ESC Indicator Light in the instrument
cluster will come on when the ignition is
placed in the ON/RUN or MAR (ACC/ON/
RUN) position, and when ESC is activated.
It should turn off with the engine running. If the ESC
Indicator Light comes on continuously with the engine
running, a malfunction has been detected in the ESC
system. If this 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 diagnosed and corrected.

The ESC OFF Indicator Light and the ESC Indi
-
cator Light come on momentarily each time
the ignition is placed in the ON/RUN or MAR
(ACC/ON/RUN) position.
Each time the ignition is turned to ON/RUN or
MAR (ACC/ON/RUN), the ESC system will be on,
even if it was turned off previously.
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
This light indicates the ESC is off.
Each time the ignition is turned to
ON/RUN or MAR/ON/RUN, the ESC
system will be on, even if it was turned off
previously.
Low Fuel Warning Light
When the fuel level reaches the low
threshold, this light will turn on and
remain on until fuel is added.
Engine Check/Malfunction Indicator Light
(MIL) Warning Light

The Engine Check/Malfunction Indicator
Light (MIL) is a part of an Onboard Diagnostic
System called OBD II that monitors engine
and automatic 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.

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70GETTING TO KNOW YOUR INSTRUMENT PANEL
Service Active Lane Management Warning
Light — If Equipped
This warning light will illuminate when the
Active Lane Management system is not
operating and requires service. Please
see an authorized dealer.
Service Forward Collision Warning (FCW)
Light — If Equipped
This warning light will illuminate to
indicate a fault in the FCW System or an
external blockage on the frontal camera.
Contact an authorized dealer for service.
Service Required/Call For Service Warning
Light
This warning light will illuminate when
service is needed. A pop-up will appear in
the display to signal the need for service.
Contact an authorized dealer as soon as
possible.
Speed Limiter Fail Warning Light —
If Equipped
This light will illuminate when there is a
failure in the speed limiter system.
Swivel Seat (Driver or Passenger) Fail
Warning Light — If Equipped
This light will illuminate when the driver
or passenger swivel seat fails.
Tire Pressure Monitoring System (TPMS)
Warning Light
The warning light switches on and a
message is displayed to indicate that
the tire pressure is lower than the
recommended value and/or that slow
pressure loss is occurring. In these cases, optimal
tire duration and fuel consumption may not be
guaranteed.
Should one or more tires be in the condition
mentioned previously, the display will show the
indications corresponding to each tire.

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.

WARNING!
A malfunctioning catalytic converter 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.
WARNING!
Do not continue driving with one or more flat
tires as handling may be compromised. Stop the
vehicle, avoiding sharp braking and steering. If a
tire puncture occurs, repair immediately using
the dedicated tire repair kit and contact an
authorized dealer as soon as possible.

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