tire pressure RAM PROMASTER 2021 User Guide

149
(Continued)
SAFETY
SAFETY FEATURES
ANTI-LOCK BRAKE SYSTEM (ABS)
The ABS is designed to aid the driver in
maintaining vehicle control under adverse
braking conditions. The system operates with a
separate computer to modulate hydraulic
pressure, to prevent wheel lock-up and to help
avoid skidding on slippery surfaces.
The system's pump motor runs during an ABS
stop to provide regulated hydraulic pressure.
The pump motor makes a low humming noise
during operation, which is normal.
The ABS includes an amber ABS Warning Light.
When the light is illuminated, the ABS is not
functioning. The system reverts to standard
non-anti-lock brakes. Placing the ignition in the
OFF mode and to the ON mode again may reset
the ABS if the fault detected was only
momentary.When you are in a severe braking condition
involving the use of the ABS, you will experience
some pedal drop as the vehicle comes to a stop.
This is the result of the system reverting to the
base brake system.
Engagement of the ABS may be accompanied
by a pulsing sensation. You may also hear a
clicking noise. These occurrences are normal
and indicate that the system is functioning
properly.
WARNING!
The ABS contains sophisticated electronic
equipment that may be susceptible to inter
-
ference caused by improperly installed or
high output radio transmitting equipment.
This interference can cause possible loss of
anti-lock braking capability. Installation of
such equipment should be performed by
qualified professionals.
Pumping of the Anti-Lock Brakes will
diminish their effectiveness and may lead
to a collision. Pumping makes the stopping
distance longer. Just press firmly on your
brake pedal when you need to slow down or
stop.
The ABS cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase braking or steering efficiency
beyond that afforded by the condition of the
vehicle brakes and tires or the traction
afforded.
The ABS cannot prevent collisions,
including those resulting from excessive
speed in turns, following another vehicle
too closely, or hydroplaning.
The capabilities of an ABS equipped vehicle
must never be exploited in a reckless or
dangerous manner that could jeopardize
the user’s safety or the safety of others.
WARNING! (Continued)
6

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154SAFETY
Towing With HSA
HSA will also provide assistance to mitigate roll
back while towing a trailer.
Traction Control System (TCS)
TCS monitors the amount of wheel spin of each
of the driven wheels. If wheel spin is detected,
brake pressure is applied to the slipping
wheel(s) and engine power is reduced, to
provide enhanced acceleration and stability. A
feature of the TCS, Brake Limited Differential
(BLD), functions similarly to a limited slip
differential and controls the wheel spin across a
driven axle. If one wheel on a driven axle is
spinning faster than the other, the system will
apply the brake of the spinning wheel. This will
allow more engine torque to be applied to the
wheel that is not spinning. This feature remains
active even if the ESC is in the “Partial Off”
mode.
The ESC Activation/Malfunction Indicator Light
(in the instrument cluster) will start to flash as
soon as the tires lose traction and the wheels
begin to spin. This indicates that the TCS is
active. If the indicator light flashes during
acceleration, ease up on the accelerator and
apply as little throttle as possible. Be sure to
adapt your speed and driving to the prevailing
road conditions, and do not switch off the ESC
or TCS.
Trailer Sway Control (TSC) — If Equipped
TSC uses sensors in the vehicle to recognize an
excessively swaying trailer and will take the
appropriate actions to attempt to stop the sway.
The system may reduce engine power and apply
the brake of the appropriate wheel(s) to
counteract the sway of the trailer.
WARNING!
If you use a trailer brake controller with your
trailer, the trailer brakes may be activated
and deactivated with the brake switch. If
so, there may not be enough brake pres -
sure to hold both the vehicle and the trailer
on a hill when the brake pedal is released.
In order to avoid rolling down an incline
while resuming acceleration, manually acti -
vate the trailer brake or apply more vehicle
brake pressure prior to releasing the brake
pedal.
HSA is not a parking brake. Always apply
the parking brake fully when exiting your
vehicle. Also, be certain to place the trans -
mission in PARK.
Failure to follow these warnings can result
in a collision or serious personal injury.
WARNING!
The TCS cannot prevent the natural laws of
physics from acting on the vehicle, nor can
it increase the traction afforded.
The TCS cannot prevent collisions,
including those resulting from excessive
speed in turns, or hydroplaning.
The capabilities of a TCS-equipped vehicle
must never be exploited in a reckless or
dangerous manner, which could jeopardize
the user's safety or the safety of others.

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SAFETY161
More cautious drivers that do not mind
frequent warnings may prefer this
setting.
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 colli -
sion 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.
FCW Limited Warning
If the instrument cluster displays “FCW Limited
Functionality” or “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.
Service FCW Warning
If the system turns off, and the instrument
cluster displays: “FCW Unavailable Service
Required”, this indicates there is an internal
system fault. Although the vehicle is still
drivable under normal conditions, have the
system checked by an authorized dealer.
TIRE PRESSURE MONITORING SYSTEM
(TPMS)
The Tire Pressure Monitoring 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 temperature
decreases, the tire pressure will decrease. 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 pressure molded into the
tire sidewall. The tire pressure will also increase
as the vehicle is driven — this is normal and
there should be no adjustment for this
increased pressure.
See Úpage 240 on how to properly inflate the
vehicle’s tires.
6

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162SAFETY
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 natural
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 pressure warning
(TPMS Warning Light) illuminates, you must
increase the tire pressure to the recommended
cold placard pressure in order for the TPMS
Warning Light to turn off. The system will
automatically update and the TPMS Warning
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
(28 kPa) above the recommended cold placard
pressure in order to turn the TPMS Warning
Light off.
For example, your vehicle may have a
recommended 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 approximately
23 psi (158 kPa). This tire pressure is
sufficiently low enough to turn on the TPMS
Warning Light. Driving the vehicle may cause
the tire pressure to rise to approximately 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.CAUTION!
The TPMS has been optimized for the orig
-
inal equipment tires and wheels. TPMS
pressures and warning have been estab -
lished 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. Aftermarket
wheels can cause sensor damage.
Using aftermarket tire sealants may cause
the Tire Pressure Monitoring System
(TPMS) sensor to become inoperable. 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 pres -
sure 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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SAFETY163
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 pres -
sure gauge while adjusting your tire pressure.
Driving on a significantly underinflated tire
causes the tire to overheat and can lead to
tire failure. Underinflation 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 responsi -
bility to maintain correct tire pressure using
an accurate tire pressure gauge, even if
underinflation has not reached the level to
trigger illumination of the TPMS Warning
Light.
Seasonal temperature changes will affect
tire pressure, and the TPMS will monitor the
actual tire pressure in the tire Ú page 274.
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
components:
Receiver Module
Four Tire Pressure Monitoring System
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” message will display 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 recommended cold placard
pressure value. The system will automatically
update 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.
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164SAFETY
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.

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188SAFETY
(Continued)
PERIODIC SAFETY CHECKS YOU SHOULD
M
AKE OUTSIDE THE VEHICLE
Tires
Examine tires for excessive tread wear and
uneven wear patterns. Check for stones, nails,
glass, or other objects lodged in the tread or
sidewall. Inspect the tread for cuts and cracks.
Inspect sidewalls for cuts, cracks, and bulges.
Check the lug nut/bolt torque for tightness.
Check the tires (including spare) for proper cold
inflation pressure.
Lights
Have someone observe the operation of brake
lights and exterior lights while you work the
controls. Check turn signal and high beam
indicator lights on the instrument panel.
Door Latches
Check for proper closing, latching, and locking.
ONLY install floor mats designed to fit your
vehicle. NEVER install a floor mat that
cannot be properly attached and secured to
your vehicle. If a floor mat needs to be
replaced, only use a FCA approved floor
mat for the specific make, model, and year
of your vehicle.
ONLY use the driver’s side floor mat on the
driver’s side floor area. To check for inter -
ference, with the vehicle properly parked
with the engine off, fully depress the accel -
erator, the brake, and the clutch pedal (if
present) to check for interference. If your
floor mat interferes with the operation of
any pedal, or is not secure to the floor,
remove the floor mat from the vehicle and
place the floor mat in your trunk.
ONLY use the passenger’s side floor mat on
the passenger’s side floor area.
ALWAYS make sure objects cannot fall or
slide into the driver’s side floor area when
the vehicle is moving. Objects can become
trapped under accelerator, brake, or clutch
pedals and could cause a loss of vehicle
control.
WARNING! (Continued)
NEVER place any objects under the floor
mat (e.g., towels, keys, etc.). These objects
could change the position of the floor mat
and may cause interference with the accel -
erator, brake, or clutch pedals.
If the vehicle carpet has been removed and
re-installed, always properly attach carpet
to the floor and check the floor mat
fasteners are secure to the vehicle carpet.
Fully depress each pedal to check for inter -
ference with the accelerator, brake, or
clutch pedals then re-install the floor mats.
It is recommended to only use mild soap
and water to clean your floor mats. After
cleaning, always check your floor mat has
been properly installed and is secured to
your vehicle using the floor mat fasteners
by lightly pulling mat.
WARNING! (Continued)

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IN CASE OF EMERGENCY197
NOTE:
Do not install the wheel cover on the spare tire.
7. Lower the vehicle by turning the jack screw
left Ú page 264.
8. Lower the jack to its fully-closed position.
9. Stow the damaged wheel/spare tire with the cable and wheel spacer before driving
the vehicle. 10. Install the winch extension and
rotate the
wrench handle clockwise until the winch
mechanism operator hears “3 clicks” from
the device to indicate the wheel is properly
stowed under the vehicle.
11. Stow the jack, jack handle and winch handle tools back in the storage
compartment.
12. Check the spare tire pressure as soon as possible. Correct the tire pressure, as
required.
For vehicles with aluminum wheels:
The center cap must be pushed out from the
rear to install the retainer and stow the tire.
WHEEL COVERS
The wheel covers on the vehicle are held in
place by the wheel lug bolts and can be
removed after the wheel lug bolts are taken off.
TIRE SERVICE KIT — IF EQUIPPED
Small punctures up to 1/4 inch (6 mm) in the
tire tread can be sealed with Tire Service Kit.
Foreign objects (e.g., screws or nails) should not
be removed from the tire. Tire Service Kit can be
used in outside temperatures down to
approximately -4°F (-20°C).
This kit will provide a temporary tire seal,
allowing you to drive your vehicle up to
100 miles (160 km) with a maximum speed of 50 mph (80 km/h).
WARNING!
To avoid the risk of forcing the vehicle off the
jack, do not tighten the wheel nuts fully until
the vehicle has been lowered. Failure to
follow this warning may result in serious
injury.
CAUTION!
Be sure to mount the spare tire with the valve
stem facing outward. The vehicle could be
damaged if the spare tire is mounted
incorrectly.WARNING!
A loose tire or jack thrown forward in a
collision or hard stop could endanger the
occupants of the vehicle. Always stow the jack
parts and the spare tire in the places
provided. Have the deflated (flat) tire repaired
or replaced immediately.
CAUTION!
Use a back-and-forth motion to remove the
hub cap. Do not use a twisting motion when
removing the hub cap, damage to the hub
cap finish may occur.
7

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198IN CASE OF EMERGENCY
TIRE SERVICE KIT STORAGE
The Tire Service Kit is located under the
passenger seat or the driver side door.
TIRE SERVICE KIT COMPONENTS AND
O
PERATION

Tire Service Kit Components

Using The Mode Select Knob And Hoses
Your Tire Service Kit is equipped with the
following symbols to indicate the air or sealant
mode.
Selecting Air Mode
Push in the Mode Select Knob (2)
and turn to this position for air
pump operation only. Use the
Black Air Pump Hose (5) when
selecting this mode.
Selecting Sealant Mode
Push in the Mode Select Knob (2)
and turn to this position to inject
the Tire Service Kit Sealant and to
inflate the tire. Use the Sealant
Hose (3) when selecting this mode.
Using The Power Button
Push and release the Power Button
(1) once to turn on the Tire Service
Kit. Push and release the Power
Button (1) again to turn Off the
Tire Service Kit.
Using The Deflation Button
Push the Deflation Button (9) to
reduce the air pressure in the tire if
it becomes overinflated.
TIRE SERVICE KIT USAGE PRECAUTIONS
Replace the Tire Service Kit Sealant Bottle
(4) and Sealant Hose (3) prior to the expira -
tion date (printed at the upper right hand
corner on the bottle label) to assure optimum
operation of the system Ú page 202.

Tire Service Kit Sealant Expiration Date Location

The Sealant Bottle (4) and Sealant Hose (3)
are a one tire application use and need to be
replaced after each use. Always replace
these components immediately at your orig -
inal equipment vehicle dealer.
1 — Power Button
2 — Mode Select Knob
3 — Sealant Hose (Clear)
4 — Sealant Bottle
5 — Air Pump Hose (Black)
6 — Sealant Bottle Release Button
7 — Power Plug
8 — Pressure Gauge
9 — Deflation Button

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IN CASE OF EMERGENCY199
(Continued)
When the Tire Service Kit sealant is in a liquid
form, clean water and a damp cloth will
remove the material from the vehicle or tire
and wheel components. Once the sealant
dries, it can easily be peeled off and properly
discarded.
For optimum performance, make sure the
valve stem on the wheel is free of debris
before connecting the Tire Service Kit.
You can use the Tire Service Kit air pump to
inflate bicycle tires. The kit also comes with
two needles, located in the Accessory
Storage Compartment (on the bottom of the
air pump) for inflating sport balls, rafts, or
similar inflatable items. However, use only
the Air Pump Hose (5) and make sure the
Mode Select Knob (2) is in the Air Mode when
inflating such items to avoid injecting sealant
into them. The Tire Service Kit Sealant is only
intended to seal punctures less than
1/4 inch (6 mm) diameter in the tread of
your tire.
Do not lift or carry the Tire Service Kit by the
hoses.
WARNING!
Do not attempt to seal a tire on the side of
the vehicle closest to traffic. Pull far enough
off the road to avoid the danger of being hit
when using the Tire Service Kit.
Do not use Tire Service Kit or drive the
vehicle under the following circumstances:
If the puncture in the tire tread is
approximately 1/4 inch (6 mm) or
larger.
If the tire has any sidewall damage.
If the tire has any damage from driving
with extremely low tire pressure.
If the tire has any damage from driving
on a flat tire.
If the wheel has any damage.
If you are unsure of the condition of the
tire or the wheel.
Keep Tire Service Kit away from open
flames or heat source.
A loose Tire Service Kit thrown forward in a
collision or hard stop could endanger the
occupants of the vehicle. Always stow the
Tire Service Kit in the place provided.
Failure to follow these warnings can result
in injuries that are serious or fatal to you,
your passengers, and others around you.
Take care not to allow the contents of Tire
Service Kit to come in contact with hair,
eyes, or clothing. Tire Service Kit sealant is
harmful if inhaled, swallowed, or absorbed
through the skin. It causes skin, eye, and
respiratory irritation. Flush immediately
with plenty of water if there is any contact
with eyes or skin. Change clothing as soon
as possible, if there is any contact with
clothing.
Tire Service Kit Sealant solution contains
latex. In case of an allergic reaction or rash,
consult a physician immediately. Keep Tire
Service Kit out of reach of children. If swal -
lowed, rinse mouth immediately with plenty
of water and drink plenty of water. Do not
induce vomiting! Consult a physician imme -
diately.
WARNING! (Continued)
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