To Vary The Speed Setting - RAM 2500 2020 Owner's Manual

286 STARTING AND OPERATING
WARNING!
The Resume function should only be used if
traffic and road conditions permit. Resuming
a set speed that is too high or too low for
prevailing traffic and road conditions could
cause the vehicle to accelerate or decelerate
too sharply for safe operation. Failure to
follow these warnings can result in a collision
and death or serious personal injury.
T V T S S
O ARY HE PEED ETTING
To Increase Speed
While ACC is set, you can increase the set speed
by pushing the RES (+) button.
The speed increment shown is dependent 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 in 5 mph incre-
ments until the button is released. The increase
in set speed is reflected in the instrument
cluster display.
Metric Speed (km/h)
Pushing the RES (+) button once will result in

a 1 km/h increase in set speed. Each subse-
quent 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 in 10 km/h
increments until the button is released. The
increase in set speed is reflected in the
instrument cluster display.
To Decrease Speed
While ACC is set, the set speed can be
decreased by pushing the SET (-) button.
The speed decrement shown is dependent 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 subse-
quent tap of the button results in a decrease
of 1 mph.
If the button is continually pushed, the set

speed will continue to decrease in 5 mph
decrements until the button is released. The
decrease in set speed is reflected in the
instrument cluster display.
Metric Speed (km/h)
Pushing the SET (-) button once will result in

a 1 km/h decrease in set speed. Each subse-
quent 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 in 10 km/h
decrements until the button is released. The
decrease in set speed is reflected in the
instrument cluster display.
NOTE:
When you override and push the RES (+)

button or SET (-) button, the new set speed
will be the current speed of the vehicle.
When you use the SET (-) button to decel-

erate, if the engine's braking power does not
slow the vehicle sufficiently to reach the set
speed, the brake system will automatically
slow the vehicle.
The ACC system decelerates the vehicle to a

full stop when following a target vehicle. If an
ACC host vehicle follows a target vehicle to a
standstill, after two seconds the driver will
either have to push the RES (+) button, or
apply the accelerator pedal to reengage the
ACC to the existing set speed.