Mercedes-Benz CLK-Class 2006 Owners Manual - Manual (Page 178)

177
Controls in detail
Automatic transmission
Upshifting
̈ Briefly press button 2 on the right
side of the steering wheel.
The transmission will shift to the next
higher gear as permitted by the shift
program. This action simultaneously
extends the gear range of the transmission
when you are driving in the automatic
program mode (C or S).
Canceling gear range limit
̈ Press and hold button 2 on the right
side of the steering wheel until D
reappears in the multifunction display.
The transmission will shift from the current
gear range directly to gear range D.
Shifting into optimal gear range
̈ Press and hold button 1 on the left
side of the steering wheel.
The transmission will automatically select
the gear range suited for optimal
acceleration and deceleration. This may
involve shifting down one or more gears.