Mercedes-Benz 2007 E 320 BLUETEC Operator's Manual page 129

Controls in detail
Locking and unlocking
Central locking switch
1 Unlocking
2 Locking
128
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You can open a locked door from inside at
any time. Open door only when conditions are
safe to do so.
If the vehicle was previously centrally locked
with the SmartKey or with KEYLESS-GO*, it will
not unlock using the central locking switch.
If the vehicle was previously locked with the cen-
tral locking switch:
and the SmartKey or SmartKey with
KEYLESS-GO* is set to factory settings, the
complete vehicle is unlocked when a door is
opened from the inside
and the SmartKey or SmartKey with
KEYLESS-GO* is set to selective settings,
only the door opened from the inside is un-
locked
Locking
Press lower half 2 of the central lock-
ing switch.
If all doors are closed, the vehicle
locks.
Unlocking
Press upper half 1 of the central lock-
ing switch.
The vehicle unlocks.