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60
Opening and closing
Requirements:
You require a CR 2032 3 V cell battery.
R
Mercedes-Benz recommends that you have the
battery replaced at a qualified specialist work‐
shop.
Remove the mechanical key (
#
Problems with the SmartKey
Problem
You can no longer lock or unlock the
vehicle.
Press release button
#
remove cover 1.
Remove battery compartment
#
out the discharged battery.
Insert the new battery into battery compart‐
#
ment 3. Observe the positive pole marking
page 59).
→
in the battery compartment and on the bat‐
tery.
Push in battery compartment 3.
#
Replace cover
#
Possible causes/consequences and
Possible causes are:
The SmartKey battery is discharged or nearly discharged.
R
There is interference from a powerful radio signal source.
R
2
down fully and
3
and take
1
so that it engages.
M
Solutions
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