Mercedes-Benz M-Class Owner's Manual page 77

Key
74
Emergency key element
General notes
If the vehicle can no longer be unlocked with
the key, use the emergency key element.
If you use the emergency key element to
unlock and open the driver's door, the anti-
theft alarm system will be triggered
( page 68).
Y
There are several ways to turn off the alarm:
To turn the alarm off with the key: press
X
the % or & button on the key.
or
Insert the key into the ignition lock.
X
or
To deactivate the alarm with KEYLESS-
X
GO: press the Start/Stop button in the igni-
tion lock. The key must be in the vehicle.
or
Lock or unlock the vehicle using KEYLESS-
X
GO. The key must be outside the vehicle.
Removing the emergency key element
Push release catch : in the direction of
X
the arrow and at the same time, remove
emergency key element ; from the key.
Key battery
Important safety notes
Have the batteries changed at a qualified spe-
cialist workshop.
G
WARNING
Batteries are toxic and contain caustic sub-
stances. For this reason, keep batteries out of
the reach of children.
If a battery has been swallowed, visit a doctor
immediately.
H Environmental note
Batteries contain pollutants.
It is illegal to dispose of them
with the household rubbish.
They must be collected sep-
arately and disposed of in an
environmentally responsible
recycling system.
Dispose of batteries in an
environmentally responsible
manner. Take discharged
batteries to a qualified spe-
cialist workshop or to a col-
lection point for used batter-
ies.
Checking the battery
Press the & or % button.
X
The battery is working properly if the bat-
tery check lamp : lights up briefly
If battery check lamp : does not light up
briefly during the test, the battery is dis-
charged.
Changing the battery (
X
i
If the key battery is checked within the
signal reception range of the vehicle, press-
page 75)
Y