2023 RAM PROMASTER ignition

162SAFETY
Trailer Merge Assist — If Equipped
Trailer Merge Assist is a function of the Blind Spot
Monitoring (BSM) system that extends the blind
spot zone to work while pulling a trailer.
NOTE:When Trailer Merge Assist is activated, Rear Cross
Path is disabled.
Trailer Merge Assist consists of three sub
functions:
Automatic Trailer Detection
Trailer Length Detection
Trailer Merge Warning

Blind Spot Zones With Trailer Merge Assist
Automatic Trailer Detection
There are two modes of operation for the detection
of the trailer length:
Automatic Mode
— When “Auto Mode” is
selected, the system will use the blind spot
sensors to automatically determine the pres -
ence and length of a trailer. The presence of a
trailer will be detected using the blind spot radar
within 90 seconds of forward movement of the
vehicle. The vehicle must be moving above
6 mph (10 km/h) to activate the feature. Once
the trailer has been detected, the system will
default to the maximum blind spot zone until the
length has been verified. You will see “Auto” in
the instrument panel cluster .
Maximum Mode — When “Max Mode” is
selected, the system will default to the
maximum blind spot zone regardless of what
size trailer is attached .
NOTE:Selected setting is stored when the ignition is
placed in the OFF position. To change this setting,
it must be selected through the Uconnect Settings
Ú page 134. Trailer Length Detection
Once the trailer presence has been established,
the trailer length will be established (by making a
90 degree turn) and then the trailer length
category (example 10-20 ft (3 m to 6 m)) will be
displayed. This can take up to 30 seconds after
completing the turn.
NOTE:During the same ignition cycle, if the vehicle is at a
standstill for a minimum of 90 seconds, a new
“trailer detection request” is enabled by the
system once the vehicle resumes motion.
The maximum trailer length supported by the
Trailer Merge Assist feature is 39.5 ft (12 m).
Trailer length is considered the forward most
portion of the trailer hitch to the rearward most
portion of the body, fascia/bumper, or ramp of
the trailer.
The maximum width supported by the Trailer
Merge Assist feature is 8.5 ft (2.59 m). Trailer
width is measured at the widest portion of the
trailer and may include wheels, tires, finders,
or rails.
1 — Vehicle
2 — Trailer

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SAFETY163
NOTE:The ability to detect a trailer may be degraded in
crowded or busy environments. Busy parking lots,
narrow areas surrounded with trees, or any other
crowded area may prevent the radar sensors from
being able to adequately detect the trailer. The
system will try to detect a trailer at every ignition
cycle or 90 seconds of standstill.

Trailer Length Detection
Trailer length will be identified and placed into one
of the following categories:
Trailer length up to 10 ft (3 m) — Blind spot zone
will be adjusted to 10 ft (3 m) .
Trailer length between 10 ft to 20 ft
(3 m to 6 m) — Blind spot zone will be adjusted
to 20 ft (6 m) .
Trailer length between 20 ft to 30 ft (6 m to 9 m) — Blind spot zone will be adjusted
to 30 ft (9 m) .
Trailer length between 30 ft and 39.5 ft (9 m to 12 m) — Blind spot zone will be adjusted to Max distance .
NOTE:Trailer length is determined within +/- 3 ft (1 m) of
actual length. Trailers that are the same size as the
category limit, 10/20/30 ft (3/6/9 m), could be
subject to being placed in the category above or
below the correct one.
Trailer Merge Warning
Trailer Merge Warning is the extension of the blind
spot function to cover the length of the trailer, plus
a safety margin, to warn the driver when there is a
vehicle in the adjacent lane. The driver is alerted by
the illumination of the BSM Warning Light located
in the outside mirror on the side the other vehicle
is detected on. In addition, an audible (chime) alert
will be heard and radio volume will be reduced
Ú page 161.
NOTE:
The Trailer Merge Alert system DOES NOT alert
the driver about rapidly approaching vehicles
that are outside the detection zones.
The Blind Spot Monitoring (BSM) system may
experience drop outs (blinking on and off) of the
side mirror warning indicator lamps when a
motorcycle or any small object remains at the
side of the vehicle for extended periods of time
(more than a couple of seconds).
Crowded areas such as parking lots, neighbor -
hoods, etc. may lead to an increased amount of
false alerts. This is normal operation.
1 — Trailer Length
2 — Trailer Hitch
3 — Trailer Width
WARNING!
The Blind Spot Monitoring system is only an aid
to help detect objects in the blind spot zones.
The BSM system is not designed to detect
pedestrians, bicyclists, or animals. Even if your
vehicle is equipped with the BSM system, always
check your vehicle’s mirrors, glance over your
shoulder, and use your turn signal before
changing lanes. Failure to do so can result in
serious injury or death.6

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SAFETY165
Turning FCW On Or Off
The FCW button is located in the Uconnect display
in the control settings Ú page 134.
To turn the FCW system on, press the forward
collision button once.
To turn the FCW system off, press the forward
collision button once.
NOTE:
Changing the FCW status to “Off” deactivates
the system, so no warning or active braking will
be available in case of a possible collision.
Changing the FCW status to “Only Warning”
prevents the system from providing limited
active braking, or additional brake support if the
driver is not braking adequately in the event of
a potential frontal collision, but maintains the
audible and visual warnings.
When FCW status is set to “Warning and
Braking”, this allows the system to warn the
driver of a possible collision with the vehicle
in front using audible/visual warnings and it
applies autonomous braking.
The FCW system state is kept in memory from
one ignition position to the next. If the system is
turned off, it will maintain its status in the next
key cycle.
FCW Braking Status And Sensitivity
The FCW Sensitivity and Active Braking status are
programmable through the Uconnect system
Úpage 134.
Far
When the sensitivity of FCW is set to the
“Far” setting and the system status is
“Only Warning”, this allows the system to
warn the driver of a possible more distant
collision with the vehicle in front using
audible/visual warnings.
More cautious drivers that do not mind
frequent warnings may prefer this setting.
NOTE:The “Far” setting may result in a greater number of
FCW possible collision warnings experienced.
Medium
When the sensitivity of FCW is set to the
“Medium” setting and the system status is
“Only Warning”, this allows the system to
warn the driver of a possible collision with
the vehicle in front using audible/visual
warnings.
Near
When the sensitivity of FCW is set to the
“Near” setting and the system status is
“Only Warning”, this allows the system to warn the driver of a possible closer collision
with the vehicle in front using audible/
visual warnings.

This setting provides less reaction time than the
“Far” and “Medium” settings, which allows for a
more dynamic driving experience.

More dynamic or aggressive drivers that
want to avoid frequent warnings may prefer
this setting.
NOTE:The “Near” setting may result in a lesser number of
FCW possible collision warnings experienced.
FCW Limited Warning

If the instrument cluster displays “FCW Limited
Functionality Clean Front Windshield” momentarily,
there may be a condition that limits FCW functionality.
Although the vehicle is still drivable under normal
conditions, the active braking may not be fully
available. Once the condition that limited the system
performance is no longer present, the system will
return to its full performance state. If the problem
persists, see an authorized dealer.

If the front camera is blocked due to external
environmental conditions (i.e. heavy rain, snow,
fog), the system will be deactivated and a warning
message will display in the instrument cluster.6

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170SAFETY
Check TPMS Warnings
The Tire Pressure Monitoring System Warning Light
will flash on and off for 75 seconds and remain on
solid when a system fault is detected, an audible
chime will be activated and the “Tire Pressure
Monitoring Unavailable” message will display.
If the ignition key is cycled, this sequence will
repeat providing the system fault still exists.
The TPMS Warning Light will turn off when the
fault condition no longer exists. A system fault can
occur with any of the following scenarios:
Jamming due to electronic devices or driving
next to facilities emitting the same radio
frequencies as the TPMS sensors
Installing some form of aftermarket window
tinting that affects radio wave signals
Snow or ice around the wheels or wheel
housings
Using tire chains on the vehicle
Using wheels/tires not equipped with TPMS
sensors
NOTE:Your vehicle is equipped with a regular size spare
wheel.

1. The spare tire does not have a TPMS sensor.
Therefore, the TPMS will not monitor the
pressure in the spare tire.
2. If a spare tire not equipped with the Tire
Pressure Monitoring System sensor is used,
the TPMS Warning Light will turn on, flashing
for 75 seconds and then remaining solid for
each subsequent ignition key cycle.
3. Once you repair or replace the original road tire and reinstall it on the vehicle in place of the
spare tire, the TPMS will update automatically
and the Tire Pressure Monitoring System
Warning Light will extinguish once the updated
tire pressures have been received. The vehicle
may need to be driven for up to 20 minutes
above 15 mph (24 km/h) to receive this
information.
NOTE:For correct Tire Pressure Monitoring System
behavior, please wait for about 20 minutes in
key-off during each tire substitution.
OCCUPANT RESTRAINT SYSTEMS
Some of the most important safety features in your
vehicle are the restraint systems:
OCCUPANT RESTRAINT SYSTEMS
F
EATURES
Seat Belt Systems
Supplemental Restraint Systems (SRS) Air Bags
Child Restraints Some of the safety features described in this
section may be standard equipment on some
models, or may be optional equipment on others.
If you are not sure, ask an authorized dealer.
IMPORTANT SAFETY PRECAUTIONS
Please pay close attention to the information in
this section. It tells you how to use your restraint
system properly, to keep you and your passengers
as safe as possible.
Here are some simple steps you can take to
minimize the risk of harm from a deploying air bag:

1. Children 12 years old and under should
always ride buckled up in the rear seat of a
vehicle with a rear seat.

2. A child who is not big enough to wear the vehicle seat belt properly must be secured in the
appropriate child restraint or belt-positioning
booster seat in a rear seating position

Ú
page 185.

3. If a child from 2 to 12 years old (not in a rear-facing child restraint) must ride in the
front passenger seat, move the seat as far
back as possible and use the proper child
restraint Ú page 185.
4. Never allow children to slide the shoulder belt behind them or under their arm.

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SAFETY171
(Continued)
5. You should read the instructions provided with
your child restraint to make sure that you are
using it properly.
6. All occupants should always wear their lap and shoulder belts properly.
7. The driver and front passenger seats should be moved back as far as practical to allow the
front air bags room to inflate.
8. Do not lean against the door or window. If your vehicle has side air bags, and deployment
occurs, the side air bags will inflate forcefully
into the space between occupants and the
door and occupants could be injured.
9. If the air bag system in this vehicle needs to be modified to accommodate a disabled person,
see Úpage 275 for customer service contact
information.
SEAT BELT SYSTEMS
Buckle up even though you are an excellent driver,
even on short trips. Someone on the road may be
a poor driver and could cause a collision that
includes you. This can happen far away from home
or on your own street.
Research has shown that seat belts save lives, and
they can reduce the seriousness of injuries in a
collision. Some of the worst injuries happen when
people are thrown from the vehicle. Seat belts
reduce the possibility of ejection and the risk of
injury caused by striking the inside of the vehicle.
Everyone in a motor vehicle should be belted at
all times.
Enhanced Seat Belt Use Reminder System
(BeltAlert)
Driver And Passenger BeltAlert — If Equipped
BeltAlert is a feature intended to remind
the driver and outboard front seat
passenger (if equipped with outboard
front passenger seat BeltAlert) to buckle
their seat belts. The BeltAlert feature is active
whenever the ignition switch is in the AVV (START)
or MAR (ACC/ON/RUN) position.
Initial Indication
If the driver is unbuckled when the ignition switch
is first in the AVV (START) or MAR (ACC/ON/RUN)
position, a chime will signal for a few seconds.
If the driver or outboard front seat passenger
(if equipped with outboard front passenger seat
BeltAlert) is unbuckled when the ignition switch is
first in the AVV (START) or MAR (ACC/ON/RUN)
position the Seat Belt Reminder Light will turn on
and remain on until both outboard front seat belts
are buckled. The outboard front passenger seat
BeltAlert is not active when an outboard front
passenger seat is unoccupied.
WARNING!
Never place a rear-facing child restraint in
front of an air bag. A deploying passenger
front air bag can cause death or serious injury
to a child 12 years or younger, including a
child in a rear-facing child restraint.
Never install a rear-facing child restraint in the
front seat of a vehicle. Only use a rear-facing
child restraint in the rear seat. If the vehicle
does not have a rear seat, do not transport a
rear-facing child restraint in that vehicle.
WARNING!
6

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178SAFETY
SUPPLEMENTAL RESTRAINT
S
YSTEMS (S RS)
Some of the safety features described in this
section may be standard equipment on some
models, or may be optional equipment on others.
If you are not sure, ask an authorized dealer.

The air bag system must be ready to protect you in a
collision. The Occupant Restraint Controller (ORC)
monitors the internal circuits and interconnecting
wiring associated with the electrical Air Bag System
Components. Your vehicle may be equipped with the
following Air Bag System Components:

Air Bag System Components
Occupant Restraint Controller (ORC)
Air Bag Warning Light
Steering Wheel and Column
Instrument Panel
Driver and Front Passenger Air Bags
Seat Belt Buckle Switch
Supplemental Side Air Bags
Front and Side Impact Sensors
Seat Belt Pretensioners
Air Bag Warning Light
The Occupant Restraint Controller (ORC)
monitors the readiness of the electronic
parts of the air bag system whenever the
ignition switch is in the AVV (START) or
MAR (ACC/ON/RUN) position. If the ignition switch
is in the STOP (OFF/LOCK) position the air bag
system is not on and the air bags will not inflate.
The ORC contains a backup power supply system
that may deploy the air bag system even if the
battery loses power or it becomes disconnected
prior to deployment.
The ORC turns on the Air Bag Warning Light in the
instrument panel for approximately four to eight
seconds for a self-check when the ignition switch is
in the MAR (ACC/ON/RUN) position. After the
self-check, the Air Bag Warning Light will turn off.
If the ORC detects a malfunction in any part of the
system, it turns on the Air Bag Warning Light, either
momentarily or continuously. A single chime will
sound to alert you if the light comes on again after
initial startup.
The ORC also includes diagnostics that will
illuminate the instrument panel Air Bag Warning
Light if a malfunction is detected that could affect
the air bag system. The diagnostics also record the
nature of the malfunction. While the air bag system
is designed to be maintenance free, if any of the following occurs, have an authorized dealer
service the air bag system immediately.The Air Bag Warning Light does not come on
during the four to eight seconds when the igni
-
tion switch is first in the MAR (ACC/ON/RUN)
position.
The Air Bag Warning Light remains on after the
four to eight-second interval.
The Air Bag Warning Light comes on intermit -
tently or remains on while driving.
NOTE:If the speedometer, tachometer, or any engine
related gauges are not working, the Occupant
Restraint Controller (ORC) may also be disabled.
In this condition the air bags may not be ready to
inflate for your protection. Have an authorized
dealer service the air bag system immediately.
WARNING!
Ignoring the Air Bag Warning Light in your
instrument panel could mean you won’t have the
air bag system to protect you in a collision. If the
light does not come on as a bulb check when the
ignition is first turned on, stays on after you start
the vehicle, or if it comes on as you drive, have
an authorized dealer service the air bag system
immediately.

23_VF_OM_EN_USC_t.book Page 178

184SAFETY
Turn on the interior lights, which remain on as
long as the battery has power.
Unlock the power door locks.
NOTE:After an accident, remember to cycle the ignition
to the STOP (OFF/LOCK) position and remove the
key from the ignition switch to avoid draining the
battery. Carefully check the vehicle for fuel leaks in
the engine compartment and on the ground near
the engine compartment and fuel tank before
resetting the system and starting the engine.
If there are no fuel leaks or damage to the vehicle
electrical devices (e.g. headlights) after an
accident, reset the Fuel Cut Off Switch by following
the procedure described below. If you have any
doubt, contact an authorized dealer.
Fuel Cut Off Switch Reset Procedure
In order to reset the Fuel Cut Off Switch after an
event push the “A” Button located underneath the
front passenger side instrument panel.
Fuel Cut Off Switch

Maintaining Your Air Bag System
WARNING!
If, after an accident, you smell fuel or see leaks
from the fuel system, do not reset the Fuel Cut
Off Switch to avoid the risk of fire. Before
resetting the Fuel Cut Off Switch, carefully check
for fuel leaks or damage to the vehicle electrical
devices (e.g. headlights).
WARNING!
Modifications to any part of the air bag system
could cause it to fail when you need it. You
could be injured if the air bag system is not
there to protect you. Do not modify the compo
-
nents or wiring, including adding any kind of
badges or stickers to the steering wheel hub
trim cover or the upper passenger side of the
instrument panel. Do not modify the front
fascia/bumper, vehicle body structure, or add
aftermarket side steps or running boards.
It is dangerous to try to repair any part of the
air bag system yourself. Be sure to tell anyone
who works on your vehicle that it has an air
bag system.

Do not attempt to modify any part of your air bag
system. The air bag may inflate accidentally or may
not function properly if modifications are made.
Take your vehicle to an authorized dealer for any air
bag system service. If your seat, including your trim
cover and cushion, needs to be serviced in any way
(including removal or loosening/tightening of seat
attachment bolts), take the vehicle to an authorized
dealer. Only manufacturer approved seat accesso -
ries may be used. If it is necessary to modify the air
bag system for persons with disabilities, contact an
authorized dealer.

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190SAFETY
(Continued)
TRANSPORTING PETS
Air Bags deploying in the front seat could harm
your pet. An unrestrained pet will be thrown about
and possibly injured, or injure a passenger during
panic braking or in a collision.
Pets should be restrained in the rear seat
(if equipped) in pet harnesses or pet carriers
that are secured by seat belts.
CONNECTED VEHICLES

Privacy of any wireless and wired communications
cannot be assured. Third parties may unlawfully
intercept information and private communications
without your consent. For further information, refer to
“Data Collection & Privacy” in your Uconnect Owner’s
Manual Supplement or “Onboard Diagnostic System
(OBD II) Cybersecurity”
Ú
page 133.

SAFETY CHECKS YOU SHOULD MAKE
I
NSIDE THE VEHICLE
Seat Belts
Inspect the seat belt system periodically, checking
for cuts, frays, and loose parts. Damaged parts
must be replaced immediately. Do not
disassemble or modify the system.
If your vehicle is involved in a collision, or if you
have questions regarding the seat belt or retractor
conditions, take your vehicle to an authorized FCA
dealer or authorized FCA Certified Collision Care
Program facility for inspection.
Air Bag Warning Light
The Air Bag Warning Light will turn on for
four to eight seconds as a bulb check
when the ignition switch is first placed in
the MAR (ACC/ON/RUN) position. 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. After
the bulb check, this light will illuminate with a
single chime when a fault with the Air Bag System
has been detected. It will stay on until the fault is
removed. If the light comes on intermittently or
remains on while driving, have an authorized
dealer service the vehicle immediately
Ú page 170.
Defroster

Check operation by selecting the defrost mode and
place the blower control on high speed. You should
be able to feel the air directed against the windshield.
See an authorized dealer for service if your defroster is
inoperable.

Floor Mat Safety Information

Always use floor mats designed to fit your vehicle.
Only use a floor mat that does not interfere with the
operation of the accelerator, brake or clutch pedals.
Only use a floor mat that is securely attached using the
floor mat fasteners so it cannot slip out of position and
interfere with the accelerator, brake or clutch pedals or
impair safe operation of your vehicle in other ways.

WARNING!
It is not possible to know or to predict all of the
possible outcomes if your vehicle’s systems
are breached. It may be possible that vehicle
systems, including safety related systems, could
be impaired or a loss of vehicle control could
occur that may result in an accident involving
serious injury or death.
WARNING!
An improperly attached, damaged, folded,
or stacked floor mat, or damaged floor mat
fasteners may cause your floor mat to interfere
with the accelerator, brake, or clutch pedals and
cause a loss of vehicle control. To prevent
SERIOUS INJURY or DEATH:
 ALWAYS securely attach your floor
mat using the floor mat fasteners.
DO NOT install your floor mat upside
down or turn your floor mat over.
Lightly pull to confirm mat is secured using the
floor mat fasteners on a regular basis.

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