Mercedes-Benz E-Class Estate 2017, Owner'S Manual

Page: 72 / 585

#
Remove the emergency key (
→
page 68).
#
Press release button 2 down fully and slide
cover 1 in the direction of the arrow.
#
Fold out cover 1 in the direction of the
arrow and remove.
#
Remove battery compartment 3 and take
out 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.
#
Push in battery compartment 3 .
#
Re-attach cover 1 and push it until it
engages.
Problems with the key
Problem
Possible causes/consequences and M M Solutions
You can no longer lock or unlock the
vehicle.
Possible causes:
R
The key battery is discharged or nearly discharged.
R
There is interference from a powerful radio signal source.
R
The key is faulty.
#
Check the battery using the battery check lamp and replace if necessary .
#
Use the emergency key to lock or unlock .
Opening and closing 69