Mercedes-Benz 2009 M-Class Operator's Manual page 89

Detected appears in the multifunction
display
with the engine running, the message
-
Key Not Detected
appears in the
multifunction display while driving off
Find the SmartKey or change its present
location immediately (e.g. place it on the
front passenger seat or insert it in shirt
pocket).
If you have started the engine with the
R
KEYLESS-GO start/stop button, you can
turn it off again by
pressing the KEYLESS-GO start/stop
-
button
inserting the SmartKey into the starter
-
switch when the vehicle is at a standstill
and the automatic transmission is in park
position P
The vehicle could be inadvertently
R
unlocked if the SmartKey is within 3 ft (1 m)
of the vehicle and
an outside door handle is splashed with
-
water
or
you attempt to clean an outside door
-
handle
Remember that the engine can be started
R
by anyone with a SmartKey that is left
inside the vehicle.
Possibility 1 (One SmartKey in the vehicle,
one SmartKey outside the vehicle):
If you leave the SmartKey behind when
exiting and locking the vehicle, no message
appears in the multifunction display.
Possibility 2 (One SmartKey in the vehicle,
no SmartKey outside the vehicle):
When exiting and trying to lock the vehicle,
the message Key Detected In Vehicle
appears in the multifunction display. The
vehicle will not be locked.
Factory setting
X
Global unlocking: Grasp an outside door
handle.
The vehicle will lock again automatically
and rearm the anti-theft alarm system
within approximately 40 seconds if neither
door nor tailgate is opened.
Controls in detail
Locking and unlocking
Lock button on the outside door handle
1
X
Global locking: Press lock button
outside door handle.
Selective setting
If you frequently travel alone, you may wish
to reprogram the SmartKey so when you
grasp 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 5 seconds until battery
check lamp ( Y page 85) flashes twice.
4
The SmartKey will then function as follows:
on an
1
Z
87