Ram ProMaster 2018 Service Manual

Certain conditions, such as a loose or missing
gas cap, poor quality fuel, etc., may illumi-
nate 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 as soon as possible if this
occurs.
WARNING!
A malfunctioning catalytic converter, as
referenced above, can reach higher tem-
peratures than in normal operating condi-
tions. 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 dam-
age 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.
— Anti-Lock Brake (ABS) Warning
Light
This light monitors the Anti-Lock Brake Sys-
tem (ABS). The light will turn on when the
ignition is placed in the ON/RUN or MAR/ON/
RUN position and may stay on for as long as
four seconds.
If the ABS light remains on or turns on while
driving, then the Anti-Lock portion of the
brake system is not functioning and service is
required. However, the conventional brake
system will continue to operate normally if
the brake warning light is not on. If the ABS light is on, the brake system
should be serviced as soon as possible to
restore the benefits of Anti-Lock Brakes. If
the ABS light does not turn on when the
ignition is placed in the ON/RUN or MAR/ON/
RUN position, have the light inspected by an
authorized dealer.
— Generic Warning Light
The Generic Warning Light will illuminate if
any of the following conditions occur: Engine
Oil Pressure Sensor Failure, External Light
Failure, Fuel Cut-Off intervention or fail,
Parking Sensor Failure, DST System Failure.
The telltale will remain on fixed in case of
swivel seat failure and on blinking in case of
Air Bag Warning Light Failure. Contact an
authorized dealer immediately for service.
39

Yellow Indicator Lights
— Stop Light Failure Indicator Light
This light will illuminate if one or more of the
stop light bulb fails.
The failure relating to this light could be:
• One or more blown bulbs.
• A blown protection fuse.
• A break in the electrical connection.
— External Light Failure Indicator
Light — If Equipped
The External Light Failure Indicator will
come on when a failure to one of the following
lights is detected:
• Direction Indicators
• Backup Lights
• Parking Lights
• Daytime Running Lights
• Clearance Lights
• License Plate Lights The failure relating to these lights could be:
• One or more blown bulbs
• A blown protection fuse
• A break in the electrical connection
— TOW/HAUL Indicator Light
This light will illuminate when TOW/HAUL
mode is selected.
— Glow Plug Light — If Equipped
This vehicle will inhibit engine cranking
when the ambient temperature is less than
–22° F (–30° C) and the oil temperature
sensor reading indicates an engine block
heater has not been used. The Glow Plug
light will flash during in cold weather for up
to ten seconds.
If equipped with a block heater harness the
message "Plug In Engine Heater", will be
displayed in the instrument cluster when the
ambient temperature is below 5°F (-15° C) at
the time the engine is shut off as a reminder
to avoid possible crank delays at the next cold
start.
— Low Diesel Exhaust Fluid (DEF) Indi-
cator Light — If Equipped
The Low Diesel Exhaust Fluid (DEF) Indicator
will illuminate if the vehicle is low on Diesel
Exhaust Fluid (DEF). Refer to “Starting And
Operating” for further information.
— Diesel Particulate Filter (DPF) Indi-
cator Light — If Equipped
When the light illuminates solid, the filter
loading is above the specified range.
GETTING TO KNOW YOUR INSTRUMENT PANEL
40

Green Indicator Lights
— Turn Signal Indicator Lights
When the left or right turn signal is activated,
the turn signal indicator will flash indepen-
dently and the corresponding 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 ve-hicle 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.
— Front Fog Indicator Light —
If Equipped
This indicator will illuminate when the front
fog lights are on.
— Park/Headlight On Indicator Light
This indicator will illuminate when the park
lights or headlights are turned on.
— Cruise Control SET Indicator Light
— If Equipped
This light will turn on when the speed control
is set to the desired speed. Refer to “Speed
Control” in “Starting And Operating” for fur-
ther information.
Blue Indicator Lights
— High Beam Indicator Light
This indicator shows that the high beam
headlights are on. With the low beams acti-
vated, push the multifunction lever forward
(toward the front of the vehicle) to turn on the
high beams. Pull the multifunction lever rear-
ward (toward the rear of the vehicle) to turn
off the high beams. If the high beams are off,
pull the lever toward you for a temporary high
beam on, "flash to pass" scenario.
41

ONBOARD DIAGNOSTIC SYSTEM —
OBD II
Your vehicle is equipped with a sophisticated
Onboard Diagnostic system called OBD II.
This system monitors the performance of the
emissions, engine, and transmission control
systems. When these systems are operating
properly, your vehicle will provide excellent
performance and fuel economy, as well as
engine emissions well within current govern-
ment regulations.
If any of these systems require service, the
OBD II system will turn on the Malfunction
Indicator Light (MIL). It will also store diag-
nostic codes and other information to assist
your service technician in making repairs.
Although your vehicle will usually be drivable
and not need towing, see your authorized
dealer for service as soon as possible.
CAUTION!
• Prolonged driving with the MIL on couldcause further damage to the emission
control system. It could also affect fuel
economy and driveability. The vehicle
must be serviced before any emissions
tests can be performed.
• If the MIL is flashing while the vehicle is
running, severe catalytic converter dam-
age and power loss will soon occur. Im-
mediate service is required.
Onboard Diagnostic System (OBD
II) Cybersecurity
Your vehicle is required to have an Onboard
Diagnostic system (OBD II) and a connection
port to allow access to information related to
the performance of your emissions controls.
Authorized service technicians may need to
access this information to assist with the
diagnosis and service of your vehicle and
emissions system.
WARNING!
• ONLY an authorized service technicianshould connect equipment to the OBD II
connection port in order to diagnose or
service your vehicle.
• If unauthorized equipment is connected
to the OBD II connection port, such as a
driver-behavior tracking device, it may:• Be possible that vehicle systems,
including safety related systems,
could be impaired or a loss of ve-
hicle control could occur that may
result in an accident involving seri-
ous injury or death.
• Access, or allow others to access,
information stored in your vehicle
systems, including personal infor-
mation.
For further information, refer to “Cybersecurity”
in “Multimedia”.
GETTING TO KNOW YOUR INSTRUMENT PANEL
42

SAFETY
AUXILIARY DRIVING SYSTEMS......44
Tire Pressure Monitoring System
(TPMS).....................44
OCCUPANT RESTRAINT SYSTEMS ....47
Occupant Restraint Systems Features . .47
Important Safety Precautions.......47Seat Belt Systems
...............48
Supplemental Restraint Systems (SRS) . .55
Child Restraints ................64
Transporting Pets ...............69SAFETY TIPS.................69
Transporting Passengers ...........69Exhaust Gas
..................69
Safety Checks You Should Make
Inside The Vehicle ..............70
Periodic Safety Checks You Should
Make Outside The Vehicle ..........72
SAFETY
43

AUXILIARY DRIVING SYSTEMS
Tire Pressure Monitoring System
(TPMS)
The Tire Pressure Monitor System (TPMS)
will warn the driver of a low tire pressure
based on the vehicle recommended cold
placard pressure.
The tire pressure will vary with temperature
by about 1 psi (7 kPa) for every 12°F (6.5°C).
This means that when the outside tempera-
ture decreases, the tire pressure will de-
crease. Tire pressure should always be set
based on cold inflation tire pressure. This is
defined as the tire pressure after the vehicle
has not been driven for at least three hours, or
driven less than 1 mile (1.6 km) after a three
hour period. The cold tire inflation pressure
must not exceed the maximum inflation pres-
sure molded into the tire sidewall. Refer to
“Tires” in “Servicing And Maintenance” for
information on how to properly inflate the
vehicle’s tires. The tire pressure will also
increase as the vehicle is driven - this is
normal and there should be no adjustment for
this increased pressure.The TPMS will warn the driver of a low tire
pressure if the tire pressure falls below the
low-pressure warning limit for any reason,
including low temperature effects and natu-
ral pressure loss through the tire.
The TPMS will continue to warn the driver of
low tire pressure as long as the condition
exists, and will not turn off until the tire
pressure is at or above the recommended
cold placard pressure. Once the low tire pres-
sure warning (Tire Pressure Monitoring [TPM]
Telltale Light) illuminates, you must increase
the tire pressure to the recommended cold
placard pressure in order for the TPM Telltale
Light to turn off. The system will automati-
cally update and the TPM Telltale Light will
turn off once the system receives the updated
tire pressures. The vehicle may need to be
driven for up to 20 minutes above 15 mph
(24 km/h) in order for the TPMS to receive
this information.
NOTE:
When filling warm tires, the tire pressure may
need to be increased up to an additional 4 psi
(30 kPa) above the recommended cold plac-
ard pressure in order to turn the Tire Pressure
Monitoring Telltale Light off.
For example, your vehicle may have a recom-
mended cold (parked for more than three
hours) placard pressure of 30 psi (207 kPa).
If the ambient temperature is 68°F (20°C)
and the measured tire pressure is 27 psi
(186 kPa), a temperature drop to 20°F (-7°C)
will decrease the tire pressure to approxi-
mately 23 psi (158 kPa). This tire pressure is
sufficiently low enough to turn on the TPM
Telltale Light. Driving the vehicle may cause
the tire pressure to rise to approximately
27 psi (186 kPa), but the TPM Telltale Light
will still be on. In this situation, the TPM
Telltale Light will turn off only after the tires
are inflated to the vehicle’s recommended
cold placard pressure value.
SAFETY
44

CAUTION!
• The TPMS has been optimized for theoriginal equipment tires and wheels.
TPMS pressures and warning have been
established for the tire size equipped on
your vehicle. Undesirable system opera-
tion or sensor damage may result when
using replacement equipment that is not
of the same size, type, and/or style.
Aftermarket wheels can cause sensor
damage.
• Using aftermarket tire sealants may
cause the Tire Pressure Monitoring Sys-
tem (TPMS) sensor to become inoper-
able. After using an aftermarket tire
sealant it is recommended that you take
your vehicle to an authorized 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. NOTE:
• The TPMS is not intended to replace nor-
mal 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 respon-
sibility to maintain correct tire pressure
using an accurate tire pressure gauge, even
if under-inflation has not reached the level
to trigger illumination of the TPM Telltale
Light.
• Seasonal temperature changes will affect tire pressure, and the TPMS will monitor
the actual tire pressure in the tire.
Base System
This 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 compo-
nents:
• Receiver Module.
• Four Tire Pressure Monitoring Sensors.
• Tire Pressure Monitoring Telltale Light.
45

Tire Pressure Monitoring Low Pressure
Warnings
The Tire Pressure Monitoring Telltale Light
will illuminate in the instrument cluster, an
audible chime will be activated, and the
“Check tire pressure” text message will dis-
play when one or more of the four active road
tire pressures 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 recom-
mended cold placard pressure value. The
system will automatically update and the Tire
Pressure Monitoring 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.
Check TPMS Warnings
The Tire Pressure Monitoring Telltale Light
will flash on and off for 75 seconds and
remain on solid when a system fault is de-
tected, an audible chime will be activated
and the “Tire Pressure Monitoring Unavail-
able” text message will display. If the ignition
key is cycled, this sequence will repeat pro-viding the system fault still exists. The Tire
Pressure Monitoring Telltale 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 driv-
ing next to facilities emitting the same
radio frequencies as the TPM sensors.
2. Installing some form of aftermarket win- dow tinting that affects radio wave
signals.
3. Snow or ice around the wheels or wheel housings.
4. Using tire chains on the vehicle.
5. Using wheels/tires not equipped with TPM sensors.
NOTE:
Your vehicle is equipped with a regular size
spare wheel.
1. The spare tire has a tire pressure monitor- ing sensor, but it is not monitored until it
is mounted in place of any of the existing
four road tires. 2. If you install the spare tire in place of a
road tire that has a pressure below the
low-pressure warning limit, upon the next
ignition key cycle, a chime will sound and
the Tire Pressure Monitoring Telltale Light
will turn ON due to the low tire condition.
Then, after driving the vehicle for up to
20 minutes above 15 mph (24 km/h), the
system will recognize the new sensor, and
turn off the telltale.
3. If a spare tire not equipped with tire pressure monitoring sensor is used, then
the Tire Pressure Monitoring Telltale Light
will turn ON, flashing for 75 seconds and
then remaining solid for each subsequent
ignition key cycle.
NOTE:
For correct Tire Pressure Monitoring behavior,
please wait for about 20 minutes in key-off
during each tire substitution.
SAFETY
46

General Information
This device complies with Part 15 of the FCC
rules and RSS 210 of Industry Canada. Op-
eration is subject to the following conditions:
1. This device may not cause harmfulinterference.
2. This device must accept any interference received, including interference that may
cause undesired operation.
NOTE:
Changes or modifications not expressly ap-
proved by the party responsible for compli-
ance could void the user’s authority to oper-
ate the equipment.
OCCUPANT RESTRAINT SYSTEMS
Some of the most important safety features in
your vehicle are the restraint systems:
Occupant Restraint Systems
Features
• 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 your autho-
rized 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 a vehicle with a
rear seat.
2. 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 (refer to “Child Restraints”
in this section for further information).
3. Children that are not big enough to wear the vehicle seat belt properly (refer to
“Child Restraints” in this section for fur- ther information) should be secured in a
vehicle with a rear seat in child restraints
or belt-positioning booster seats. Older
children who do not use child restraints or
belt-positioning booster seats should ride
properly buckled up in a vehicle with a
rear seat.
4. Never allow children to slide the shoulder belt behind them or under their arm.
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 deploy-
ment occurs, the side air bags will inflate
forcefully into the space between occu-
pants and the door and occupants could
be injured.
47

9. If the air bag system in this vehicle needsto be modified to accommodate a dis-
abled person, refer to the “Customer As-
sistance” section for customer service
contact information.
WARNING!
• Never place a rear-facing child restraintin front of an air bag. A deploying pas-
senger 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.
• Only use a rear-facing child restraint in a
vehicle with a rear seat.
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
Belt Alert feature is active whenever the igni-
tion switch is in the START or ON/RUN posi-
tion.
Initial Indication
If the driver is unbuckled when the ignition
switch is first in the START or ON/RUN posi-
tion, 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 START or ON/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 passen-
ger seat BeltAlert is not active when an out-
board 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 out-
board 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
SAFETY
48