Acura 2010 RL Owner's Manual page 409

Driving with the Paddle Shifters
Downshifting with the paddle shifter
allows you to increase the engine
braking when going down steep or
long hills, and provides more power
when climbing uphills. You can
upshift the transmission manually to
reduce the rpm.
The transmission also shifts
automatically as the vehicle comes to
a complete stop. It downshifts to first
gear when the vehicle speed reaches
9 mph (15 km/h) or less.
406
The automatic transmission will not
allow you to shift up or down if:
You downshift before the engine
speed reaches the highest
threshold of the lower gear.
If you try to do this, the gear
position indicator will flash the
number of the lower gear several
times, then return to a higher gear.
Also, you cannot upshift with the
paddle shifter before the engine
speed reaches the lower limit of
the higher gear.
You try to shift to third or a higher
gear when the vehicle is stationary.
You pull both paddle shifters at
the same time.
You pull one of the two paddle
shifters with another paddle
shifter being pressed.
2010 RL
Here are the speed ranges for
upshifting and downshifting.
To Shift Speed range
from
1 2
→ over 0 mph (0 km/h)
2 3
→ over 9 mph (15 km/h)
3 → 4 over 17 mph (27 km/h)
4 → 5 over 38 mph (60 km/h)
To Shift Speed range
from
5 4 under 131 mph (210 km/h)
→
4 3 under 94 mph (150 km/h)
→
3 2 under 63 mph (100 km/h)
→
2 1 under 31 mph (50 km/h)
→