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44
Opening and closing
Requirements:
A CR 2032 3 V cell battery
R
Mercedes-Benz recommends that you have the
battery replaced by a qualified specialist work‐
shop.
Remove the emergency key (
#
Example image
Problems with the key
Problem
You cannot lock or unlock
the vehicle any more.
You have lost a key.
page 43).
/
Possible causes/consequences and
Possible causes:
the key battery is weak or discharged
R
there is interference from a powerful source of radio waves
R
the key is defective
R
Check the battery using the battery check lamp and replace if neces‐
#
sary (
page 43).
/
Use the emergency key to unlock and lock the vehicle (
#
Have the key checked at a qualified specialist workshop.
#
Have the key deactivated at a qualified specialist workshop.
#
If necessary, have the mechanical locks replaced.
#
Press release button
#
cover
1
forward.
Remove battery compartment
#
the discharged battery.
Insert the new battery into battery compart‐
#
ment 3. Observe the positive pole marking
in the battery compartment and on the bat‐
tery.
Insert battery compartment 3.
#
Replace cover
1
so that it engages.
#
Slide the emergency key in completely until it
#
engages (
page 43).
/
M M
Solutions
2
down fully and slide
3
and remove
page 43).
/
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