Mercedes-Benz 2007 E -Class Wagon Operator's Manual page 116

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If you can no longer lock or unlock the vehi-
cle with the SmartKey with KEYLESS-GO, then
the batteries in the SmartKey with KEYLESS-GO
are discharged, the SmartKey with KEYLESS-GO
is malfunctioning or the vehicle battery is
drained.
Check the batteries in the SmartKey with
KEYLESS-GO ( page 119) and replace
them if necessary ( page 440).
Use the mechanical key to unlock the driv-
er's door ( page 435).
Use the mechanical key to lock the driver's
door.
Have the vehicle battery checked by an au-
thorized Mercedes-Benz Center.
If the SmartKey with KEYLESS-GO is malfunc-
tioning, contact an authorized Mercedes-Benz
Center.
Important notes on using KEYLESS-GO
You can also use the SmartKey with
KEYLESS-GO like a normal SmartKey
( page 110).
You can combine KEYLESS-GO func-
tions with normal SmartKey functions
(e.g. unlocking with KEYLESS-GO and
locking with button ‹).
Always carry the SmartKey with
KEYLESS-GO with you.
Never store the SmartKey with
KEYLESS-GO together with:
Electronic items such as a cellular
phone or another SmartKey with
KEYLESS-GO
Metallic objects such as coins or
metal foil
Doing so could impair the function of
the KEYLESS-GO system.
To lock or unlock the vehicle, the
SmartKey with KEYLESS-GO must be
located outside the vehicle within ap-
proximately 3 ft (1 m) of a door or the
tailgate.
In order to start the engine with the
SmartKey with KEYLESS-GO:
Controls in detail
Locking and unlocking
The SmartKey with KEYLESS-GO
must be located in the vehicle.
The brake pedal must be firmly de-
pressed. Do not depress the accel-
erator.
If the SmartKey with KEYLESS-GO is
positioned farther away from the vehi-
cle, the system may no longer recog-
nize the SmartKey with KEYLESS-GO.
The vehicle cannot be locked or the
engine started via the KEYLESS-GO
system.
If the SmartKey with KEYLESS-GO is re-
moved from the vehicle (e.g. if passen-
ger exits the vehicle with the SmartKey
with KEYLESS-GO)
when pressing the KEYLESS-GO
start/stop button or trying to lock
the vehicle with the outside door
handle the message Key not rec-
ognized appears in the multifunc-
tion display
115