brake sensor RAM PROMASTER 2021 Owners Manual

3
GETTING TO KNOW YOUR
INSTRUMENT PANEL
INSTRUMENT CLUSTER........................................42Instrument Cluster Descriptions ................. 43
INSTRUMENT CLUSTER DISPLAY .......................44
Location And Controls ................................. 44
Change Engine Oil — If Equipped................ 45
Display Setup Menu .................................... 46
Values Displayed ......................................... 46
Personal Settings
(Customer-Programmable Features) .......... 47
TRIP COMPUTER ...................................................47
Trip Button.................................................... 47
Trip Functions .............................................. 48
WARNING LIGHTS AND MESSAGES ..................48
Red Warning Lights...................................... 48
Yellow Warning Lights ................................. 50
Yellow Indicator Lights................................. 53
Green Indicator Lights ................................. 54
Blue Indicator Lights .................................... 54
ONBOARD DIAGNOSTIC SYSTEM — OBD II ......55
Onboard Diagnostic System (OBD II)
Cybersecurity................................................ 55
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS ...........................................................56
STARTING AND OPERATING
STARTING THE ENGINE ...................................... 57
Automatic Transmission.............................. 57
Normal Starting............................................ 57
Cold Weather Operation
(Below –22°F Or −30°C) ........................... 57 If Engine Fails To Start ................................ 57
After Starting ................................................ 58
ENGINE BLOCK HEATER — IF EQUIPPED ......... 58
ENGINE BREAK-IN RECOMMENDATIONS ........ 58
PARKING BRAKE ................................................. 59
AUTOMATIC TRANSMISSION ............................. 60 Key Ignition Park Interlock .......................... 60
Brake/Transmission Shift Interlock
System ......................................................... 60 Six-Speed Automatic Transmission ............ 61
POWER STEERING .............................................. 66
Power Steering Fluid Check ....................... 67
CRUISE CONTROL — IF EQUIPPED .................... 67
To Activate.................................................... 68
To Set A Desired Speed............................... 68
To Vary The Speed Setting .......................... 68
To Accelerate For Passing ........................... 69
To Resume Speed ....................................... 69
To Deactivate ............................................... 69
PARKSENSE REAR PARK ASSIST —
IF EQUIPPED ......................................................... 69
ParkSense Rear Park Assist Sensors ......... 70
ParkSense Rear Park Assist Alerts ............. 70 ParkSense Rear Park Assist Failure
Indications.................................................... 72 Cleaning The ParkSense System................ 72
ParkSense Rear Park Assist System
Usage Precautions ...................................... 72
PARKVIEW REAR BACK UP CAMERA ...............73
REFUELING THE VEHICLE ....................................75
Loose Fuel Filler Cap Message................... 76
VEHICLE LOADING ................................................76
Vehicle Certification Label .......................... 76
Gross Vehicle Weight Rating (GVWR) ......... 76
Gross Axle Weight Rating (GAWR) ............. 76
Tire Size ........................................................ 77
Rim Size ....................................................... 77
Inflation Pressure ........................................ 77
Curb Weight ................................................. 77
Overloading .................................................. 77
Loading ........................................................ 77
TRAILER TOWING .................................................78
Common Towing Definitions ....................... 78
Trailer Hitch Classification .......................... 80
Trailer Towing Weights
(Maximum Trailer Weight Ratings) ............ 81 Trailer And Tongue Weight ......................... 81
Towing Requirements ................................ 81
Towing Tips ................................................. 84
RECREATIONAL TOWING
(BEHIND MOTORHOME) ......................................85
Towing This Vehicle Behind Another
Vehicle .......................................................... 85 Recreational Towing .................................... 85

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GETTING TO KNOW YOUR INSTRUMENT PANEL53
Anti-Lock Brake System (ABS) Warning
Light
This light monitors the 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, Dynamic Steering Torque 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.
YELLOW INDICATOR LIGHTS
Forward Collision Warning Off Indicator
Light — If Equipped
This indicator light illuminates to
indicate that Forward Collision
Warning is off.
Service Forward Collision Warning (FCW)
Light — If Equipped

This warning light will illuminate to
indicate a fault in the FCW System.
Contact an authorized dealer for service.

TOW/HAUL Indicator Light
This indicator light will illuminate
when TOW/HAUL mode is selected
Ú page 78.
WARNING!
A malfunctioning catalytic converter, as
referenced above, 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.
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SAFETY151
(Continued)
ESC uses sensors in the vehicle to determine
the vehicle path intended by the driver and
compares it to the actual path of the vehicle.
When the actual path does not match the
intended path, ESC applies the brake of the
appropriate wheel to assist in counteracting the
oversteer or understeer condition.ESC Operating Modes

ESC OFF button Location

The ESC OFF button is located in the center
switch bank, next to the hazard flasher switch.
ESC On
This mode is the normal operating mode for ESC
equipped vehicles. Whenever the vehicle is
started, the ESC system will be in this mode.
This mode should be used for most driving
situations. ESC should only be turned off for
specific reasons as noted below.
WARNING!
Electronic Stability Control (ESC) cannot
prevent the natural laws of physics from
acting on the vehicle, nor can it increase
the traction afforded by prevailing road
conditions. ESC cannot prevent accidents,
including those resulting from excessive
speed in turns, driving on very slippery
surfaces, or hydroplaning. ESC also cannot
prevent accidents resulting from loss of
vehicle control due to inappropriate driver
input for the conditions. Only a safe, atten -
tive, and skillful driver can prevent acci -
dents. The capabilities of an ESC equipped
vehicle must never be exploited in a reck -
less or dangerous manner which could
jeopardize the user’s safety or the safety of
others.
Vehicle modifications, or failure to properly
maintain your vehicle, may change the
handling characteristics of your vehicle,
and may negatively affect the performance
of the ESC system. Changes to the steering
system, suspension, braking system, tire
type and size or wheel size may adversely
affect ESC performance. Improperly
inflated and unevenly worn tires may also
degrade ESC performance. Any vehicle
modification or poor vehicle maintenance
that reduces the effectiveness of the ESC
system can increase the risk of loss of
vehicle control, vehicle rollover, personal
injury and death.
WARNING! (Continued)
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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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SAFETY155
NOTE:
TSC cannot stop all trailers from swaying.
Always use caution when towing a trailer and
follow the trailer tongue weight recommenda -
tions Ú page 78.
When TSC is functioning, the ESC Activation/
Malfunction Indicator Light will flash, the engine
power may be reduced, and you may feel the
brakes being applied to individual wheels to
attempt to stop the trailer from swaying. TSC is
disabled when the ESC system is in the “Partial
Off” mode.AUXILIARY DRIVING SYSTEMS
BLIND SPOT MONITORING (BS M) — IF
E
QUIPPED
The BSM system uses two radar sensors,
located inside the taillights, to detect highway
licensable vehicles (automobiles, trucks,
motorcycles, etc.) that enter the blind spot
zones from the rear/front/side of the vehicle.

Rear Detection Zones

When the vehicle is started, the BSM Warning
Light will momentarily illuminate in both outside
rearview mirrors to let the driver know that the
system is operational. The BSM system sensors
operate when the vehicle is in any forward gear
or REVERSE and enters standby mode when the
vehicle is in PARK. The BSM detection zone covers approximately
one lane width on both sides of the vehicle 12 ft
(3.8 m). The zone length starts at the outside
rear view mirror and extends approximately
10 ft (3 m) beyond the rear fascia/bumper of
the vehicle. The BSM system monitors the
detection zones on both sides of the vehicle
when the vehicle speed reaches approximately
6 mph (10 km/h) or higher and will alert the
driver of vehicles in these areas.
NOTE:
The BSM system DOES NOT alert the driver
about rapidly approaching vehicles that are
outside the detection zones.
The Blind Spot Monitoring (BSM) system may
experience dropouts (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).
WARNING!
If TSC activates while driving, slow the vehicle
down, stop at the nearest safe location, and
adjust the trailer load to eliminate trailer
sway.
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SAFETY159
NOTE:
Whenever an audible alert is requested by the
BSM system, the radio is also muted.
When the system is in RCP, the system shall
respond with both visual and audible alerts
when a detected object is present. Whenever
an audible alert is requested, the radio is also
muted. Turn/hazard signal status is ignored;
the RCP state always requests the chime.
Blind Spot Alert Off
When the BSM system is turned off there will be
no visual or audible alerts from either the BSM
or RCP systems.
NOTE:
The BSM system will store the current operating
mode when the vehicle is shut off. Each time
the vehicle is started the previously stored
mode will be recalled and used.
FORWARD COLLISION WARNING (FCW)
W
ITH MITIGATION — IF EQUIPPED
The FCW with Mitigation system provides the
driver with audible warnings, visual warnings
(within the instrument cluster display), and may
apply a brake jerk to warn the driver when it
detects a potential frontal collision. The warnings and limited braking are intended
to provide the driver with enough time to react,
avoid or mitigate the potential collision.
NOTE:
FCW monitors the information from the forward
looking sensors as well as the Electronic Brake
Controller (EBC), to calculate the probability of a
forward collision. When the system determines
that a forward collision is probable, the driver
will be provided with audible and visual warn-
ings as well as a possible brake jerk warning.
If the driver does not take action based upon
these progressive warnings, then the system
will provide a limited level of active braking to
help slow the vehicle and mitigate the potential
forward collision. If the driver reacts to the warn
-
ings by braking and the system determines that
the driver intends to avoid the collision by
braking but has not applied sufficient brake
force, the system will compensate and provide
additional brake force as required.
If a FCW with Mitigation event begins at a speed
below 26 mph (42 km/h), the system may
provide the maximum braking possible to miti -
gate the potential forward collision. Vehicles
With Automatic Transmission: After the end of the intervention of automatic braking, the trans
-
mission may remain in last gear stored — there -
fore the vehicle could lurch forward, once the
brakes release a few seconds later. If the
Forward Collision Warning with Mitigation event
stops the vehicle completely, the system will
hold the vehicle at standstill for two seconds
and then release the brakes.

FCW Message

When the system determines a collision with
the vehicle in front of you is no longer probable,
the warning message will be deactivated.
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