Mercedes-Benz 2006 C 230 Sport Operator's Manual page 109

Controls in detail
Locking and unlocking
The switches are located in the center
console.
1 Central locking switch
2 Central unlocking switch
108
i
You can open a locked door from the
inside. Open door only when conditions
are safe to do so.
If the vehicle was previously centrally
locked using the SmartKey, it will not
unlock using the central unlocking
switch 2.
If the vehicle was previously locked
with the central locking switch 1
while in the selective remote con-
trol mode, only the door opened
from the inside is unlocked.
while in the global remote control
mode, the complete vehicle is
unlocked when a door is opened
from the inside.
Locking
Press central locking switch 1.
If all doors are closed, the vehicle
locks.
Unlocking
Press central unlocking switch 2.
The vehicle unlocks.