light Ram ProMaster City 2020 Service Manual

104 SAFETY
27 psi (186 kPa), but the TPMS Warning Light will still be on.
In this situation, the TPMS Warning Light will turn off only
after the tires are inflated to the vehicle’s recommended cold
placard pressure value.NOTE:
• The TPMS is not intended to replace normal tire care and
maintenance or to provide warning of a tire failure or
condition.
• The TPMS should not be used as a tire pressure gauge while adjusting your tire 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.
• The TPMS is not a substitute for proper tire maintenance, and it is the driver’s responsibility to maintain correct tire
pressure using an accurate tire pressure gauge, even if
under-inflation has not reached the level to trigger illumi -
nation of the TPMS Warning Light.
• Seasonal temperature changes will affect tire pressure, and the TPMS will monitor the actual tire pressure in the tire.
CAUTION!
• The TPMS has been optimized for the original equip -
ment tires and wheels. TPMS pressures and warning
have been established for the tire size equipped on
your vehicle. Undesirable system operation or sensor
damage may result when using replacement equipment
that is not of the same size, type, and/or style. After -
market wheels can cause sensor damage.
• Using aftermarket tire sealants may cause the Tire Pres -
sure Monitoring System (TPMS) sensor to become
inoperable. After using an aftermarket tire sealant it is
recommended that you take your vehicle to an autho -
rized dealership to have your sensor function checked.
• After inspecting or adjusting the tire pressure always reinstall the valve stem cap. This will prevent moisture
and dirt from entering the valve stem, which could
damage the TPMS sensor.
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SAFETY 105
Base SystemThis is the TPMS warning indicator located in the
instrument cluster.
The TPMS uses wireless technology with wheel rim
mounted electronic sensors to monitor tire pressure levels.
Sensors, mounted to each wheel as part of the valve stem,
transmit tire pressure readings to the Receiver Module.
NOTE:
It is particularly important for you to check the tire pressure
in all of the tires on your vehicle regularly and to maintain
the proper pressure.
The TPMS consists of the following components:
• Receiver Module
• Four Tire Pressure Monitoring sensors
• Tire Pressure Monitoring System Warning Light
Tire Pressure Monitoring Low Pressure Warnings
The Tire Pressure Monitoring System Warning Light will
illuminate in the instrument cluster, an audible chime will be
activated, and the “Check tire pressure” text message will
display when one or more of the four active road tire pres -
sures are low. Should this occur, you should stop as soon as possible, check the inflation pressure of each tire on your
vehicle, and inflate each tire to the vehicle’s recommended
cold placard pressure value. The system will automatically
update and the Tire Pressure Monitoring Light will extin
-
guish 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.
Check TPMS Warnings
The Tire Pressure Monitoring 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 a
proper text message will be displayed. If the ignition key is
cycled, this sequence will repeat providing the system fault
still exists. The Tire Pressure Monitoring Warning Light will
turn off when the fault condition no longer exists. A system
fault can occur with any of the following scenarios:
1. Jamming due to electronic devices or driving next to facil -
ities emitting the same radio frequencies as the TPM
sensors.
2. Installing some form of aftermarket window tinting that affects radio wave signals.
3. Snow or ice around the wheels or wheel housings.
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110 SAFETY
Initial Indication

If the driver is unbuckled when the ignition switch is first in the
AVV/START or MAR/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/RUN posi-
tion 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.

BeltAlert Warning Sequence

The BeltAlert warning sequence is activated when the vehicle is
moving above a specified vehicle speed range and the driver or
outboard front seat passenger is unbuckled (if equipped with
outboard front passenger seat BeltAlert) (the outboard front
passenger seat BeltAlert is not active when the outboard front
passenger seat is unoccupied). The BeltAlert warning sequence
starts by blinking the Seat Belt Reminder Light and sounding an
intermittent chime. Once the BeltAlert warning sequence has
completed, the Seat Belt Reminder Light will remain on until the
seat belts are buckled. The BeltAlert warning sequence may repeat
based on vehicle speed until the driver and occupied outboard front
seat passenger seat belts are buckled. The driver should instruct all
occupants to buckle their seat belts.
Change of Status
If the driver or outboard front seat passenger (if equipped
with outboard front passenger seat BeltAlert) unbuckles
their seat belt while the vehicle is traveling, the BeltAlert
warning sequence will begin until the seat belts are buckled
again.
The outboard front passenger seat BeltAlert is not active
when the outboard front passenger seat is unoccupied.
BeltAlert may be triggered when an animal or other items are
placed on the outboard front passenger seat or when the seat
is folded flat (if equipped). It is recommended that pets be
restrained in the rear seat (if equipped) in pet harnesses or
pet carriers that are secured by seat belts, and cargo is prop
-
erly stowed.
BeltAlert can be activated or deactivated by an authorized
dealer. FCA US LLC does not recommend deactivating
BeltAlert.
NOTE:
If BeltAlert has been deactivated and the driver or outboard
front seat passenger (if equipped with outboard front
passenger seat BeltAlert) is unbuckled the Seat Belt
Reminder Light will turn on and remain on until the driver
and outboard front seat passenger seat belts are buckled.
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120 SAFETY
How To Disengage The Automatic Locking Mode
Unbuckle the combination lap/shoulder belt and allow it to
retract completely to disengage the Automatic Locking
Mode and activate the vehicle sensitive (emergency) locking
mode.Supplemental Restraint Systems (SRS)
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 colli-
sion. 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 Compo -
nents:
Air Bag System Components
• Occupant Restraint Controller (ORC)
• Air Bag Warning Light
• Steering Wheel and Column
• Instrument Panel
• Knee Impact Bolsters
• Driver and Front Passenger Air Bags
• Seat Belt Buckle Switch
WARNING!
• The seat belt assembly must be replaced if the switch -
able Automatic Locking Retractor (ALR) feature or any
other seat belt function is not working properly when
checked according to the procedures in the Service
Manual.
• Failure to replace the seat belt assembly could increase the risk of injury in collisions.
• Do not use the Automatic Locking Mode to restrain occupants who are wearing the seat belt or children
who are using booster seats. The locked mode is only
used to install rear-facing or forward-facing child
restraints that have a harness for restraining the child.
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SAFETY 121
• Supplemental Side Air Bags
• Supplemental Knee 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 ignition 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 intermittently 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.
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122 SAFETY
(Continued)
Front Air Bags
This vehicle has front air bags and lap/shoulder belts for
both the driver and front passenger. The front air bags are a
supplement to the seat belt restraint systems. The driver
front air bag is mounted in the center of the steering wheel.
The passenger front air bag is mounted in the instrument
panel, above the glove compartment. The words “SRS
AIRBAG” or “AIRBAG” are embossed on the air bag covers.Front Air Bag/Knee Impact Bolster Locations
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.
1 — Driver And Passenger Front Air Bags
2 — Passenger Knee Impact Bolster
3 — Driver Knee Impact Bolster/Supplemental Driver Knee Air Bag
WARNING!
• Being too close to the steering wheel or instrument panel during front air bag deployment could cause
serious injury, including death. Air bags need room to
inflate. Sit back, comfortably extending your arms to
reach the steering wheel or instrument panel.
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124 SAFETY
Front Air Bag Operation
Front Air Bags are designed to provide additional protection
by supplementing the seat belts. Front air bags are not
expected to reduce the risk of injury in rear, side, or rollover
collisions. The front air bags will not deploy in all frontal
collisions, including some that may produce substantial
vehicle damage — for example, some pole collisions, truck
underrides, and angle offset collisions.
On the other hand, depending on the type and location of
impact, front air bags may deploy in crashes with little
vehicle front-end damage but that produce a severe initial
deceleration.
Because air bag sensors measure vehicle deceleration over
time, vehicle speed and damage by themselves are not good
indicators of whether or not an air bag should have
deployed.
Seat belts are necessary for your protection in all collisions,
and also are needed to help keep you in position, away from
an inflating air bag.When the ORC detects a collision requiring the front air bags,
it signals the inflator units. A large quantity of non-toxic gas
is generated to inflate the front air bags.
The steering wheel hub trim cover and the upper passenger
side of the instrument panel separate and fold out of the way
as the air bags inflate to their full size. The front air bags fully
inflate in less time than it takes to blink your eyes. The front
air bags then quickly deflate while helping to restrain the
driver and front passenger.
Knee Impact Bolsters
The Knee Impact Bolsters help protect the knees of the driver
and front passenger, and position the front occupants for
improved interaction with the front air bags.
WARNING!
• Do not drill, cut, or tamper with the knee impact bolsters in any way.
• Do not mount any accessories to the knee impact bolsters such as alarm lights, stereos, citizen band
radios, etc.
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SAFETY 129
Rollover Events
Side Air Bags and seat belt pretensioners are designed to
activate in certain rollover events. The Occupant Restraint
Controller (ORC) determines whether deployment in a
particular rollover event is appropriate, based on the
severity and type of collision. Vehicle damage by itself is not
a good indicator of whether or not Side Air Bags and seat belt
pretensioners should have deployed.
The Side Air Bags and seat belt pretensioners will not deploy
in all rollover events. The rollover sensing system deter-
mines if a rollover event may be in progress and whether
deployment is appropriate. In the event the vehicle experi -
ences a rollover or near rollover event, and deployment is
appropriate, the rollover sensing system will deploy the side
air bags and seat belt pretensioners on both sides of the
vehicle.
The SABICs may help reduce the risk of partial or complete
ejection of vehicle occupants through side windows in
certain rollover or side impact events. Air Bag System Components
NOTE:
The Occupant Restraint Controller (ORC) monitors the
internal circuits and interconnecting wiring associated with
electrical Air Bag System Components listed below:
• Occupant Restraint Controller (ORC)
• Air Bag Warning Light
• Steering Wheel and Column
• Instrument Panel
• Knee Impact Bolsters
• Driver and Front Passenger Air Bags
• Seat Belt Buckle Switch
• Supplemental Side Air Bags
• Supplemental Knee Air Bags
• Front and Side Impact Sensors
• Seat Belt Pretensioners
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SAFETY 131
Enhanced Accident Response System
In the event of an impact, if the communication network
remains intact, and the power remains intact, depending on
the nature of the event, the ORC will determine whether to
have the Enhanced Accident Response System perform the
following functions:
• Cut off fuel to the engine (if equipped)
• Cut off battery power to the electric motor (if equipped)
• Flash hazard lights as long as the battery has power
• Turn on the interior lights, which remain on as long as thebattery has power or for 15 minutes from the intervention
of the Enhanced Accident Response System
• Unlock the power door locks
Your vehicle may also be designed to perform any of these
other functions in response to the Enhanced Accident
Response System:
• Turn off the Fuel Filter Heater, Turn off the HVAC Blower Motor, Close the HVAC Circulation Door • Cut off battery power to the:
• Engine
• Electric Motor (if equipped)
• Electric Power Steering
• Brake booster
• Automatic transmission gear selector
• Horn
• Front wiper
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 system by following
the procedure described below. If you have any doubt,
contact an authorized dealer.
4
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154 SAFETY
Whenever a change is noticed in the sound of the exhaust
system, when exhaust fumes can be detected inside the
vehicle, or when the underside or rear of the vehicle is
damaged, have a competent mechanic inspect the complete
exhaust system and adjacent body areas for broken,
damaged, deteriorated, or mispositioned parts. Open seams
or loose connections could permit exhaust fumes to seep into
the passenger compartment. In addition, inspect the exhaust
system each time the vehicle is raised for lubrication or oil
change. Replace as required.
Safety Checks You Should Make Inside 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.
Front seat belt assemblies must be replaced after a collision.
Rear seat belt assemblies must be replaced after a collision if
they have been damaged (i.e., bent retractor, torn webbing,
etc.). If there is any question regarding seat belt or retractor
condition, replace the seat belt.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
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. 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 autho
-
rized dealer service the vehicle immediately.
Refer to “Occupant Restraint Systems” in “Safety” for
further information.
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.
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