Users Manual Part 1

Table Of Contents
R
You require a CR 2032 3 V cell battery.
Mercedes-Benz recommends that you have the
battery replaced at a qualified specialist work‐
shop.
#
Remove the emergency key (/ page 69).
#
Press emergency key 2 into the opening in
the key in the direction of the arrow until
cover 1 opens. When doing so, do not hold
cover 1 closed.
#
Insert the emergency key into the opening of
the cover and lift up covering 3 and remove
it.
#
Repeatedly tap the key against your palm
until battery 4 falls out of the key.
#
Insert the new battery with the positive pole
facing upwards. Use a lint-free cloth to do so.
#
Make sure that the surface of the battery is
free of lint, grease and other impurities.
#
Insert the front tabs of covering 3 into the
housing and then press on both sides to
close it.
#
Make sure that covering 3 is completely
closed.
#
Insert the front tabs of cover 1 into the
housing and then press until it is completely
closed.
#
Insert emergency key 2 into the key until it
engages.
Problems with the key
You can no longer lock or unlock the vehicle
Possible causes:
R
The key battery is weak or discharged.
R
The key is faulty.
#
Check the battery using the indicator lamp
and replace if necessary (/ page 69).
#
Use the emergency key to lock or unlock
(/ page 69).
#
Have the key checked at a qualified specialist
workshop.
70
Opening and closing