#
Remove the emergency key (
/
page 63).
#
Press release knob
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 when doing this.
#
Push in battery compartment
3
.
#
Re-attach cover
1
and push it until it
engages.
Problems with the SmartKey
You can no longer lock or unlock the vehicle
Possible causes:
R
The SmartKey battery is weak or discharged.
R
The SmartKey is faulty.
#
Check the battery using the indicator lamp
and replace if necessary (
/
page 63).
#
Use the emergency key to lock or unlock
(
/
page 63).
#
Have the SmartKey checked at a qualified
specialist workshop.
There is interference from a powerful radio
signal source
The SmartKey function is impaired by, for exam‐
ple:
R
High voltage power lines
R
Mobile phones
R
Electronic devices (notebooks, Tablets)
R
Shielding due to metal objects or induction
loops for electrical gate systems or auto‐
matic barriers
#
Make sure that there is a sufficient distance
between the SmartKey and the potential
source of interference.
You have lost a SmartKey
#
Have the SmartKey deactivated at a qualified
specialist workshop.
#
If necessary, have the mechanical lock
replaced as well.
64 Opening and closing
Summary of Contents for G 550 2021
Page 8: ...Left hand drive vehicles 6 At a glance Cockpit...
Page 11: ......
Page 12: ...Instrument Display 10 At a glance Indicator and warning 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 501: ......
Page 502: ......