Mercedes-Benz SLR McLaren. Operator's Manual.

Controls in detail
Automatic transmission
An additional indication of the current gear
selector lever position can be found on the
cover of the shifting-gate.
Warning! G
It is dangerous to shift the gear selector
lever out of P or N if the engine speed is
higher than idle speed. If your foot is not
firmly on the brake pedal, the vehicle could
accelerate quickly forward or reverse. You
could lose control of the vehicle and hit
someone or something. Only shift into gear
when the engine is idling normally and when
your right foot is firmly on the brake pedal.
168
When the gear selector lever is in
position D, you can influence transmission
shifting by
limiting the shift range
changing gears manually
One-touch gearshifting
Even with an automatic transmission you
can change the gears manually when the
gear selector lever is in position D.
Downshifting
Briefly press the gear selector lever to
the left in the D- direction.
The transmission will shift from the current
gear to the next lower gear. This
action simultaneously limits the gear
range of the transmission
( page 170).