Prerequisites
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 57).
#
Press release button
2
down fully and
remove cover
1
.
#
Remove battery compartment
3
.
#
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
.
#
Replace cover
1
so that it engages.
Problems with the SmartKey
Problem
Possible causes/consequences and
M
Solutions
You can no longer lock or unlock the
vehicle.
Possible causes are:
R
The SmartKey battery is discharged or nearly discharged.
R
There is interference from a powerful radio signal source.
58 Opening and closing
Summary of Contents for E-class
Page 7: ...5 ...
Page 8: ...6 At a glance Cockpit ...
Page 10: ...Instrument display standard 8 At a glance Cockpit ...
Page 12: ...Instrument display in the Widescreen Cockpit 10 At a glance Warning and indicator lamps ...
Page 14: ...12 At a glance Overhead control panel ...
Page 16: ...14 At a glance Door control panel and seat adjustment ...
Page 18: ...16 At a glance Emergencies and breakdowns ...
Page 444: ...442 ...
Page 445: ...443 ...
Page 446: ...444 ...