Mercedes-Benz 2009 S-Class Operator's Manual page 302

Controls in detail
Locking and unlocking
X
Unlocking driver's door and fuel filler
flap: Pull the driver's outside door handle.
X
Global unlocking: Pull any outside door
handle other than the driver's outside door
handle.
X
Global locking: Touch outside of door
handle 1.
Checking SmartKey batteries
X
Press button or
j k
SmartKey.
Battery check lamp ( Y page 297) comes
4
on briefly to indicate that the SmartKey
batteries are in order.
If the battery check lamp does not come on
briefly during check, the SmartKey batteries
are discharged.
X
Replace the batteries ( Y page 564).
i You can obtain the required batteries at
any authorized Mercedes-Benz Center.
i If the batteries are checked within signal
range of the vehicle, pressing button
or will lock or unlock the vehicle
j k
accordingly.
300
Loss of the SmartKey
If you lose your SmartKey or mechanical key,
you should do the following:
X
Have the SmartKey deactivated by an
authorized Mercedes-Benz Center.
X
Report the loss of the SmartKey or the
mechanical key to your car insurance
company immediately.
X
Have the mechanical lock replaced if
necessary.
on the
Any authorized Mercedes-Benz Center will be
glad to supply you with a replacement.
Opening the doors from the inside
You can open a locked door from the inside.
Open door only when conditions are safe to
do so.
Example illustration driver's door
Locking knob
1
Inside door handle
2
If the vehicle has previously been locked with
the SmartKey or with KEYLESS-GO, opening
a door from the inside will trigger the anti-
theft alarm system.
To cancel the alarm, see ( Y page 80).