Acura 2011 RL Owner's Manual page 330

Adaptive Cruise Control (ACC)
Using the ACC
ACC BUTTON
1. Push the ACC button on the
steering wheel. The ACC indicator
on the instrument panel comes on,
and ''ACC'' is shown on the multi-
information display.
2. Accelerate to the desired speed
above 25 mph (40 km/h).
324
SET/DECEL BUTTON
3. Press and release the SET/
DECEL button on the steering
wheel, then release the
accelerator pedal.
If you press the SET/DECEL button
when the vehicle speed is below 25
mph (40 km/h), you will hear a beep
about 1 second. This means ACC is
not activated, and you cannot set
your speed.
When your speed reaches 25 mph
(40 km/h), ACC goes into wait mode,
and ''ACC'' is shown on the multi-
information display.