Manual gearshifting
To activate/deactivate:
press button 
. If indicator lamp 
is lit, manual gearshifting is activated. The current gear is displayed in the multifunction display.
To permanently shift the gears manually in drive program 
using the steering wheel gearshift paddles, select the M (Manual) setting for the transmission.
NOTE Damage to the engine due to shifting up too late
The automatic transmission does not shift up in manual mode even when the engine's limiting speed is reached.
The fuel supply is interrupted in order to prevent the engine from overrevving.
Shift up before the engine speed reaches the red area in the rev counter.
To shift up:
pull steering wheel gearshift paddle . To shift down:
pull steering wheel gearshift paddle . 
If the engine speed is too high or too low, you cannot change gear using the steering wheel gearshift paddles. In this case, segments light up red.