Mercedes-Benz E-Class 2010 Owner's Manual page 71

Key
68
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.
Battery of the key
Important safety notes
It is advisable to have batteries replaced at a
qualified specialist workshop, e.g. at a
Mercedes-Benz Service Centre.
G Risk of poisoning
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
Do not dispose of batteries with the house-
hold rubbish. They contain highly toxic sub-
stances.
Take discharged batteries to a qualified spe-
cialist workshop, e.g. a Mercedes-Benz
Service Centre, or to a special collection point
for old batteries.
Checking the battery
Press the & or % button.
X
The battery is working properly if the bat-
tery check lamp lights up briefly.
Changing the battery
You require a CR 2025 3 V cell battery.
Take the emergency key element out of the
X
key ( page 67).
Y
Press the emergency key element into the
X
opening in the key in the direction of
arrow ; until cover : of the battery tray
opens. Do not hold the cover closed while
doing so.
Remove the cover of the battery tray.
X
Repeatedly tap the key against your palm
X
until battery = falls out.
Insert the new battery with the positive
X
pole facing upwards. Use a lint-free cloth to
do so.
Insert the front tabs of the battery tray's
X
cover first and then press to close it.
Check the function of all key buttons on the
X
vehicle.