2019 Ram 2500 Instrument

318 STARTING AND OPERATING
Trailer Decoupling/Unloading - The air suspension system
will load level (lower/exhaust only) once after 12 minutes
after the vehicle is turned off. This allows for easy removal of
a trailer and/or load from the back of the truck by main -
taining the ride height. After 12 minutes you will need to
turn the ignition to the run position for the air suspension to
re-level due to addition/removal of load in the vehicle. If the
air suspension system is disabled using the settings menu
(Tire Jack Mode, Transport Mode, Alignment Mode, or Bed
Lowering Mode) the system will remain disabled when the
vehicle is turned off. Reactivating the air suspension can be
accomplished via the settings menu or driving the vehicle
above 5 mph (8 km/h) for Tire Jack Mode or Alignment
Mode and 16 mph (26 km/h) for Transport Mode and Bed
Lowering Mode.
NOTE:
• Most 3500 models will not lower to Alternate Trailer Height (ATH) when unloaded.
• Refer to “Trailer Towing” in “Starting And Operating” for further information. Ignition OFF Behavior

For a predetermined amount of time after the ignition is off the
air suspension may adjust to maintain a proper appearance.

Air Suspension Modes
The air suspension system has multiple modes to protect the
system in unique situations:
Tire/Jack Mode

To assist with changing a tire, the air suspension system has a
feature which allows the automatic leveling to be disabled. This
mode is intended to be enabled with engine running. Refer to
“Instrument Cluster Display” in “Getting To Know Your Instru
-
ment Panel” or “Uconnect Settings” in “Multimedia” if equipped
with a touch screen radio for further information.

NOTE:
This mode is intended to be enabled with engine running.
WARNING!
The air suspension system uses a high pressure volume
of air to operate the system. To avoid personal injury or
damage to the system, see your authorized dealer for
service.

STARTING AND OPERATING 319
Transport Mode
For towing your vehicle with four wheels off the road, the air
suspension system has a feature which will put the vehicle
below Normal Ride Height (NRH) and disable the automatic
load leveling system. This mode is intended to be enabled
with engine running. Refer to “Instrument Cluster Display”
in “Getting To Know Your Instrument Panel” or “Uconnect
Settings” in “Understanding Your Instrument Panel” if
equipped with a touch screen radio for further information.
NOTE:
This mode is intended to be enabled with engine running.
Wheel Alignment Mode
Before performing a wheel alignment this mode must be
enabled. Refer to “Instrument Cluster Display” in “Getting
To Know Your Instrument Panel” or “Uconnect Settings” in
“Multimedia” if equipped with a touch screen radio for
further information.
NOTE:
This mode is intended to be enabled with engine running.Bed Lowering Mode
For towing your vehicle with four wheels off the road, the air
suspension system has a feature which will put the vehicle
below Normal Ride Height (NRH) and disable the automatic
load leveling system. This mode is intended to be enabled
with engine running. Refer to “Instrument Cluster Display”
in “Getting To Know Your Instrument Panel” or “Uconnect
Settings” in “Understanding Your Instrument Panel” if
equipped with a touch screen radio for further information.
Protection Strategy
In order to “protect” the air suspension system, the vehicle
will disable load leveling as required (suspension over
-
loaded, battery charge low, etc.). Load leveling will automat -
ically resume as soon as system operation requirements are
met. See your authorized dealer if system does not resume.
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320 STARTING AND OPERATING
Instrument Cluster Display Messages
When the appropriate conditions exist, a message will
appear in the instrument cluster display. Refer to “Instru-
ment Cluster Display” in “Getting To Know Your Instru-
ment Panel” for further information.
An audible chime will be heard whenever a system error has
been detected.
See your authorized dealer for system service if normal oper-
ation does not resume.
Operation
Pushing the Alternate Trailer Height (ATH) button once
while at Normal Ride Height (NRH), will lower the vehicle
to Alternate Trailer Height (ATH) and will illuminate the
LED.
NOTE:
The LED will continuously blink until vehicle Alternate
Trailer Height (ATH) has been achieved and the LED will
turn on.
Pushing the Alternate Trailer Height (ATH) again will raise
the vehicle to Normal Ride Height (NRH). NOTE:
The LED will continuously blink until Normal Ride Height
(NRH) has been achieved and the LED will turn off.
• Transport Mode – No indicator lamps will be illuminated.
Transport Mode is disabled by driving the vehicle, or dese -
lecting the mode via the interface.
• Tire/Jack Mode – No indicator lamps will be illuminated. Tire/Jack Mode is disabled by driving the vehicle, or by
deselecting the mode via the interface.
• Wheel Alignment Mode – No indicator lamps will be illu -
minated. Wheel Alignment Mode is disabled by driving
the vehicle, or by deselecting the mode via the interface.
• Bed Lowering Mode – No indicator lamps will be illumi -
nated. Bed Lowering Mode is disabled by driving the
vehicle, or deselecting the mode via the interface.
AXLE LOCKER SYSTEM — POWER WAGON
MODELS ONLY (IF EQUIPPED)
This vehicle is equipped with electronically locking front
and rear differentials. These differentials, when engaged,
mechanically lock together the axle shafts forcing the wheels
to spin at an equal rate. This allows the vehicle to maintain
its momentum and prevents it from becoming stuck. The
locking front and rear differentials should only be engaged

STARTING AND OPERATING 323
This system is controlled by the electronic control sway bar
switch located below the instrument panel.Sway Bar Disconnect Button
Push the SWAY BAR switch to activate the system. Push the
switch again to deactivate the system. The “Sway Bar Indi -
cator Light” (located in the instrument cluster) will illumi -
nate when the bar is disconnected. The “Sway Bar Indicator
Light” will flash during activation transition, or when activa -
tion conditions are not met. The stabilizer/sway bar should
remain in on-road mode during normal driving conditions. To disconnect the stabilizer/sway bar, shift to either 4HI or
4LO and push the SWAY BAR button to obtain the Off-Road
position. Refer to “Four Wheel Drive Operation” in “Starting
And Operating” for further information. The “Sway Bar
Indicator Light” will flash until the stabilizer/sway bar has
been fully disconnected.
NOTE:
The stabilizer/sway bar may be torque locked due to left and
right suspension height differences. This condition is due to
driving surface differences or vehicle loading. In order for
the Stabilizer/Sway Bar to disconnect/reconnect, the rightWARNING!
Do not disconnect the stabilizer bar and drive on hard
surfaced roads or at speeds above 18 mph (29 km/h), you
may lose control of the vehicle, which could result in
serious injury or death. The front stabilizer bar enhances
vehicle stability and assists in maintaining control of the
vehicle. The system monitors vehicle speed and will
attempt to reconnect the stabilizer bar at speeds over
18 mph (29 km/h). This is indicated by a flashing off road
light and solid on road light. Once vehicle speed is
reduced below 14 mph (22 km/h), the system will
attempt to return to the Off-Road mode.
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STARTING AND OPERATING 355
To Activate
Push the On/Off button to activate the Speed Control. The
cruise indicator light in the instrument cluster display will
illuminate. To turn the system off, push the On/Off button a
second time. The cruise indicator light will turn off. The
system should be turned off when not in use.
To Set A Desired Speed
Turn the Speed Control on. When the vehicle has reached the
desired speed, push the SET (-) button and release. Release
the accelerator and the vehicle will operate at the selected
speed.
NOTE:
The vehicle should be traveling at a steady speed and on
level ground before pushing the SET (-) button.
To Vary The Speed Setting
To Increase Speed
When the Speed 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 if equipped. Refer to “Getting To
Know Your Instrument Panel” for more information. The
speed decrement shown is dependant on the chosen speed
unit of U.S. (mph) or Metric (km/h):
U.S. Speed (mph)
• Pushing the RES (+) button once will result in a 1 mph increase in set speed. Each subsequent tap of the button
results in an increase of 1 mph.
• If the button is continually pushed, the set speed will continue to increase until the button is released, then the
new set speed will be established.
WARNING!
Leaving the Speed Control system on when not in use is
dangerous. You could accidentally set the system or
cause it to go faster than you want. You could lose
control and have an accident. Always leave the system
off when you are not using it.
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356 STARTING AND OPERATING
Metric Speed (km/h)
• Pushing the RES (+) button once will result in a 1 km/h increase in set speed. Each subsequent tap of the button
results in an increase of 1 km/h.
• If the button is continually pushed, the set speed will continue to increase until the button is released, then the
new set speed will be established.
To Decrease Speed
When the Speed Control is set, you can decrease speed by
pushing the SET (-) button.
The driver’s preferred units can be selected through the
instrument panel settings if equipped. Refer to “Getting To
Know Your Instrument Panel” for more information. The
speed decrement shown is dependant on the chosen speed
unit of U.S. (mph) or Metric (km/h):
U.S. Speed (mph)
• Pushing the SET (-) button once will result in a 1 mph decrease in set speed. Each subsequent tap of the button
results in a decrease of 1 mph.
• If the button is continually pushed, the set speed will continue to decrease until the button is released, then the
new set speed will be established. Metric Speed (km/h)

• Pushing the SET (-) button once will result in a 1 km/h decrease in set speed. Each subsequent tap of the button
results in a decrease of 1 km/h.
• If the button is continually pushed, the set speed will continue to decrease until the button is released, then the
new set speed will be established.
To Accelerate For Passing
Press the accelerator as you would normally. When the pedal
is released, the vehicle will return to the set speed.
Using Speed Control On Hills
The transmission may downshift on hills to maintain the
vehicle set speed.
NOTE:
The Speed Control system maintains speed up and down
hills. A slight speed change on moderate hills is normal.

360 STARTING AND OPERATING
Activating Adaptive Cruise Control (ACC)
You can only engage ACC if the vehicle speed is above
0 mph (0 km/h).

The minimum set speed for the ACC system is 20 mph (32 km/h).

When the system is turned on and in the ready state, the
instrument cluster display will read “ACC Ready.”
When the system is off, the instrument cluster display will
read “Adaptive Cruise Control (ACC) Off.”
NOTE:
You cannot engage ACC under the following conditions:
• When in Four-Wheel Drive Low.
• When you apply the brakes.
• When the parking brake is applied.
• When the automatic transmission is in PARK, REVERSE orNEUTRAL.
• When the vehicle speed is outside of the speed range.
• When the brakes are overheated.
• When the driver door is open at low speed.
• When the driver seat belt is unbuckled at low speed.
• ESC Full-Off Mode is active.
To Activate/Deactivate
Push and release the Adaptive Cruise Control (ACC) on/off
button. The ACC menu in the instrument cluster displays
“ACC Ready.”
Adaptive Cruise Control Ready
To turn the system off, push and release the Adaptive Cruise
Control (ACC) on/off button again. At this time, the system
will turn off and the instrument cluster display will show
“Adaptive Cruise Control (ACC) Off.”

STARTING AND OPERATING 361
Adaptive Cruise Control Off
To Set A Desired ACC Speed
When the vehicle reaches the speed desired, push the SET (-)
button and release. The instrument cluster display will show
the set speed.
If the system is set when the vehicle speed is below 20 mph
(32 km/h), the set speed shall be defaulted to 20 mph
(32 km/h). If the system is set when the vehicle speed is
above 20 mph (32 km/h), the set speed shall be the current
speed of the vehicle.
NOTE:
ACC cannot be set if there is a stationary vehicle in front of
your vehicle in close proximity.
Remove your foot from the accelerator pedal, after the ACC
has been set. If you do not, the vehicle may continue to accel-
erate beyond the set speed. If this occurs:
• The message “ACC DRIVER OVERRIDE” will display in the instrument cluster display.
• The system will not be controlling the distance between your vehicle and the vehicle ahead. The vehicle speed will
only be determined by the position of the accelerator
pedal.
WARNING!
Leaving the Adaptive Cruise Control (ACC) system on
when not in use is dangerous. You could accidentally set
the system or cause it to go faster than you want. You
could lose control and have a collision. Always leave the
system off when you are not using it.
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