Mercedes-Benz 2006 SL 500 Operator's Manual page 115

Controls in detail
Locking and unlocking
i
If the vehicle was previously centrally
locked using the SmartKey or the
SmartKey with KEYLESS-GO*, it will
not unlock using the central locking
switch.
If the vehicle was previously locked
with the central locking switch
while in the global remote control
mode, the complete vehicle is un-
locked when a door is opened from
the inside
while in the selective remote con-
trol mode, only the door opened
from the inside is unlocked
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