2019 Ram 3500 Chassis Cab warning

298 STARTING AND OPERATING
Brake Alert
NOTE:
The “Brake!” Screen in the instrument cluster display is a
warning for the driver to take action and does not necessarily
mean that the Forward Collision Warning system is
applying the brakes autonomously.
Trailer Detect — If Equipped
When a trailer is detected, the ACC system automatically
defaults to the longest setting (four bars). The setting can be
overridden by pushing the Distance Button on the steering
wheel.
Overtake Aid
When driving with ACC engaged and following a vehicle,
the system will provide an additional acceleration up to the
ACC set speed to assist in passing the vehicle. This addi -
tional acceleration is triggered when the driver utilizes the
left turn signal and will only be active when passing on the
left hand side.
ACC Operation At Stop
In the event that the ACC system brings your vehicle to a
standstill while following a target vehicle, if the target
vehicle starts moving within two seconds of your vehicle
coming to a standstill, your vehicle will resume motion
without the need for any driver action.
If the target vehicle does not start moving within two
seconds of your vehicle coming to a standstill, then ACC will
cancel and the driver must take over braking. When the
target vehicle drives off, ACC can be resumed by releasing
the brake and pushing the RES (+) button.

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NOTE:
After the ACC system holds your vehicle at a standstill for
approximately two seconds, a chime will sound and an
“ACC may cancel soon” warning will display. The brakes
will release when ACC is cancelled and the driver must take
over braking.
While ACC is holding your vehicle at a standstill, if the
driver seatbelt is unbuckled or the driver door is opened, the
parking brake will be activated, and the ACC system will be
cancelled.
Adaptive Cruise Control (ACC) Menu
The instrument cluster display will show the current ACC
system settings. The instrument cluster display is located in
the center of the instrument cluster. The information it
displays depends on ACC system status.Push the Adaptive Cruise Control (ACC) on/off button
(located on the steering wheel) until one of the following
appears in the instrument cluster display:
Adaptive Cruise Control Off
When ACC is deactivated, the display will read “Adaptive
Cruise Control Off.”
Adaptive Cruise Control Ready
When ACC is activated, but the vehicle speed setting has not
been selected, the display will read “Adaptive Cruise
Control Ready.”
Adaptive Cruise Control Set
When the RES (+) or the SET(-) button (located on the
steering wheel) is pushed, the display will read “ACC SET.”
When ACC is set, the set speed will show in the instrument
cluster display.
WARNING!
When the ACC system is resumed, the driver must
ensure that there are no pedestrians, vehicles or objects
in the path of the vehicle. Failure to follow these
warnings can result in a collision and death or serious
personal injury.5

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The ACC screen may display once again if any ACC activity
occurs, which may include any of the following:
• System Cancel
• Driver Override
• System Off
• ACC Proximity Warning
• ACC Unavailable WarningThe instrument cluster display will return to the last
display selected after five seconds of no ACC display
activity
Display Warnings And Maintenance
“Wipe Front Radar Sensor In Front Of Vehicle” Warning
The “ACC/FCW Unavailable Wipe Front Radar Sensor”
warning will display and also a chime will indicate when
conditions temporarily limit system performance.
This most often occurs at times of poor visibility, such as in
snow or heavy rain. The ACC system may also become
temporarily blinded due to obstructions, such as mud, dirt or
ice. In these cases, the instrument cluster display will display
“ACC/FCW Unavailable Wipe Front Radar Sensor” and the
system will deactivate. The “ACC/FCW Unavailable Wipe Front Radar Sensor”
message can sometimes be displayed while driving in highly
reflective areas (i.e. tunnels with reflective tiles, or ice and
snow). The ACC system will recover after the vehicle has left
these areas. Under rare conditions, when the radar is not
tracking any vehicles or objects in its path this warning may
temporarily occur.
NOTE:
If the “ACC/FCW Unavailable Wipe Front Radar Sensor”
warning is active Normal (Fixed Speed) Cruise Control is
still available. For additional information refer to “Normal
(Fixed Speed) Cruise Control Mode” in this section.
If weather conditions are not a factor, the driver should
examine the sensor. It may require cleaning or removal of an
obstruction. The sensor is located in the camera in the center
of the windshield, on the forward side of the rearview
mirror.

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To keep the ACC System operating properly, it is important
to note the following maintenance items:
• Always keep the sensor clean. Carefully clear the wind-
shield.
• Do not remove any screws from the sensor. Doing so could cause an ACC system malfunction or failure and require a
sensor realignment.

• Do not attach or install any accessories near the sensor, including transparent material or aftermarket grilles. Doing
so could cause an ACC system failure or malfunction.

When the condition that deactivated the system is no longer
present, the system will return to the “Adaptive Cruise
Control Off” state and will resume function by simply reac -
tivating it.
NOTE:
• If the “ACC/FCW Unavailable Wipe Front Radar Sensor” message occurs frequently (e.g. more than once on every
trip) without any snow, rain, mud, or other obstruction,
have the radar sensor realigned at your authorized dealer.
• Installing a snow plow, front-end protector, an after -
market grille or modifying the grille is not recommended.
Doing so may block the sensor and inhibit ACC/FCW
operation. “Clean Front Windshield” Warning
The “ACC/FCW Limited Functionality Clean Front Wind
-
shield” warning will display and also a chime will indicate
when conditions temporarily limit system performance. This
most often occurs at times of poor visibility, such as in snow
or heavy rain and fog. The ACC system may also become
temporarily blinded due to obstructions, such as mud, dirt,
or ice on windshield, driving directly into the sun and fog on
the inside of glass. In these cases, the instrument cluster
display will show “ACC/FCW Limited Functionality Clean
Front Windshield” and the system will have degraded
performance.
The “ACC/FCW Limited Functionality Clean Front Wind -
shield” message can sometimes be displayed while driving
in adverse weather conditions. The ACC/FCW system will
recover after the vehicle has left these areas. Under rare
conditions, when the camera is not tracking any vehicles or
objects in its path this warning may temporarily occur.
If weather conditions are not a factor, the driver should
examine the windshield and the camera located on the back
side of the inside rear view mirror. They may require
cleaning or removal of an obstruction.
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302 STARTING AND OPERATING
When the condition that created limited functionality is no
longer present, the system will return to full functionality.
NOTE:
If the “ACC/FCW Limited Functionality Clean Front Wind-
shield” message occurs frequently (e.g. more than once on
every trip) without any snow, rain, mud, or other obstruc -
tion, have the windshield and forward facing camera
inspected at your authorized dealer.
Service ACC/FCW Warning
If the system turns off, and the instrument cluster displays
“ACC/FCW Unavailable Service Required” or “Cruise/
FCW Unavailable Service Required”, there may be an
internal system fault or a temporary malfunction that limits
ACC functionality. Although the vehicle is still drivable
under normal conditions, ACC will be temporarily unavail -
able. If this occurs, try activating ACC again later, following
an ignition cycle. If the problem persists, see your authorized
dealer.Precautions While Driving With ACC
In certain driving situations, ACC may have detection issues.
In these cases, ACC may brake late or unexpectedly. The
driver needs to stay alert and may need to intervene.
NOTE:
• Aftermarket add-ons such as snow plows, lift kits, and brush/grille bars can hinder module performance. Ensure
the radar/camera has no obstructions in the field of view.
• Height modifications can limit module performance and functionality.
• Do not put stickers or easy passes over the camera/radar field of view.
• Any modifications to the vehicle that may obstruct the field of view of the radar/camera are not recommended.
Cleaning Instructions
Dust and dirt can accumulate on the cover and block the
camera lens. Clean the camera lens with a soft microfiber
cloth, being careful not to damage or scratch the module.

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Normal (Fixed Speed) Cruise Control Mode
In addition to Adaptive Cruise Control mode, a Normal
(Fixed Speed) Cruise Control mode is available for cruising
at fixed speeds. The Normal (Fixed Speed) Cruise Control
mode is designed to maintain a set cruising speed without
requiring the driver to operate the accelerator. Speed Control
can only be operated if the vehicle speed is above 20 mph
(32 km/h).
To change between the different control modes, push the
Adaptive Cruise Control (ACC) on/off button which turns
the ACC on and the Normal (Fixed Speed) Cruise Control
off. Pushing of the Normal (Fixed Speed) Cruise Control on/
off button will result in turning on (changing to) the Normal
(Fixed Speed) Cruise Control mode.To Set A Desired Speed
Turn the Normal (Fixed Speed) Cruise Control on.
When the vehicle has reached the desired speed,
push the RES (+) or SET (-) button and release.
Release the accelerator and the vehicle will operate at the
selected speed. Once a speed has been set a message
“CRUISE CONTROL SET TO MPH (km/h)” will appear
indicating what speed was set. This light will turn on when
the system is turned on via the on/off control. It turns green
when the cruise control is set.
To Vary The Speed Setting
To Increase Speed
When the Normal (Fixed Speed) Cruise Control is set, you
can increase speed by pushing the RES (+) button.
The driver's preferred units can be selected through the
instrument panel settings. Refer to ”Instrument Cluster
Display” in “Getting To Know Your Instrument Panel” for
more information. The speed increment shown is dependant
on the speed of U.S. (mph) or Metric (km/h) units:
WARNING!
In the Normal (Fixed Speed) Cruise Control mode, the
system will not react to vehicles ahead. In addition, the
proximity warning does not activate and no alarm will
sound even if you are too close to the vehicle ahead since
neither the presence of the vehicle ahead nor the
vehicle-to-vehicle distance is detected. Be sure to
maintain a safe distance between your vehicle and the
vehicle ahead. Always be aware which mode is selected.
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310 STARTING AND OPERATING
ParkSense can be active only when the gear selector is in
REVERSE. If ParkSense is enabled at this gear selector posi-
tion, the system will remain active until the vehicle speed is
increased to approximately 7 mph (11 km/h) or above.
When in REVERSE and above the system's operating speed,
a warning will appear within the instrument cluster display
indicating the vehicle speed is too fast. The system will
become active again if the vehicle speed is decreased to
speeds less than approximately 6 mph (9 km/h).
ParkSense Sensors
For the 3500, 4500 and 5500 Chassis Cab vehicles, the rear
ParkSense sensors are shipped loose. Please refer to the Ram
Body Builders Guide for more information.
The four ParkSense sensors are to be located in the rear
fascia/bumper, and monitor the area behind the vehicle that
is within the sensors’ field of view.
The sensors can detect obstacles from approximately
18 inches (45 cm) up to 79 inches (200 cm) from the rear
fascia/bumper in the horizontal direction, depending on the
location, type and orientation of the obstacle.
NOTE:
If equipped as a dually, the ParkSense system has six rear
sensors to assist in detection around the dually flares.
ParkSense Warning Display
The ParkSense Warning screen is located within the instru-
ment cluster display. It provides visual warnings to indicate
the distance between the rear fascia/bumper and the
detected obstacle. Refer to “Instrument Cluster Display” in
“Getting To Know Your Instrument Panel” for further infor -
mation.
ParkSense Display
When the vehicle is in REVERSE, the warning display will
turn on indicating the system status.
The system will indicate a detected obstacle by showing a
single arc in the left and/or right rear regions based on the
object’s distance and location relative to the vehicle.
If an object is detected in the left and/or right rear region, the
display will show a single solid arc in the left and/or right
rear region and the system will produce a tone. As the
vehicle moves closer to the object, the display will show the
single arc moving closer to the vehicle and the tone will
change from a single 1/2 second tone to slow, to fast, to
continuous.

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The vehicle is close to the obstacle when the warning display shows one flashing arc and sounds a continuous tone. The
following chart shows the warning alert operation when the system is detecting an obstacle:
NOTE:
ParkSense will reduce the volume of the radio, if on, when
the system is sounding an audio tone.Adjustable Chime Volume Settings
The rear chime volume settings are programmable through
the Uconnect system. Refer to “Uconnect Settings” in “Multi
-
media” for further information.
The chime volume settings include low, medium, and high.
The factory default volume is medium.
WARNING ALERTS
Rear Distance (inches/cm) Greater than
79 inches (200 cm) 79-59 inches
(200-150 cm) 59-47 inches
(150-120 cm) 47-39 inches
(120-100 cm) 39-25 inches
(100-65 cm) 25-12 inches
(65-30 cm) Less than
12 inches (30 cm)
Audible Alert Chime NoneSingle 1/2
Second Tone Slow Slow Fast
Fast Continuous
Arcs-Left None None None None None 2nd Flashing 1st Flashing
Arcs-Center None 6th Solid 5th Solid 4th Solid 3rd Flashing 2nd Flashing 1st Flashing Arcs-Right None None None None None 2nd Flashing 1st Flashing Radio
Volume
Reduced No
Yes YesYesYesYesYes