Mercedes-Benz 2009 E-Class Operator's Manual page 86

Controls in detail
Locking and unlocking
If the vehicle was previously centrally locked
with the SmartKey or KEYLESS-GO, the
tailgate will lock automatically when it is
closed.
To prevent a possible inadvertent lockout, the
tailgate will open automatically if a SmartKey
is recognized inside the vehicle or in the cargo
compartment.
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey so when you pull
the driver's outside door handle, only the
driver's door and the fuel filler flap unlock.
X
Switching on/off: Press and hold buttons
and simultaneously for
k j
approximately 6 seconds until battery
check lamp ( Y page 81) flashes twice.
4
The SmartKey will then function as follows:
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: Press lock button
outside door handle.
84
Checking SmartKey batteries
X
Press button
j
SmartKey.
Battery check lamp
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 (
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.
on an
1
Loss of the SmartKey
or on the If you lose your SmartKey or mechanical key,
k
you should do the following:
Y
( page 81) comes
4
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
Y page 346).
necessary.
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.