Mercedes-Benz CLA Owner's Manual page 82

Problems with the key
Problem
You can no longer lock or unlock the
vehicle.
You have lost a key.
Press release button
#
cover 1 in the direction of the arrow.
Fold out cover 1
#
arrow and remove.
Remove battery compartment
#
out the discharged battery.
Insert the new battery into battery compart‐
#
ment 3. Observe the positive pole marking
Possible causes/consequences and
Possible causes:
The key battery is weak or discharged.
R
There is interference from a powerful radio signal source.
R
The key is faulty.
R
Check the battery using the battery check lamp and replace if necessary (
#
Use the emergency key to lock or unlock (
#
Have the key checked at a qualified specialist workshop.
#
Have the key deactivated at a qualified specialist workshop.
#
2 down fully and slide
in the direction of the
#
#
3 and take
M M Solutions
page 78).
/
Opening and closing
in the battery compartment and on the bat‐
tery when doing this.
Push in battery compartment 3.
Re-attach cover 1 and push it until it
engages.
page 78).
/
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