Mercedes-Benz E-Class Estate 2021, Owner'S Manual

Page: 87 / 533

Pr Problems wit oblems with t h the key he key, tr , troubleshoo oubleshooting ting
YYou can no long ou can no longer loc er lock or unloc k or unlock t k the v he vehicle ehicle
Possible causes:
R
The key battery is weak or discharged.
#
Check the battery using the indicator lamp
(
/
page 81).
#
Replace the key battery, if necessary
(
/
page 83).
#
Use the replacement key.
#
Use the emergency key to lock or unlock
(
/
page 88).
#
Have the key checked at a quali ed specialist
workshop.
Ther There is int e is interf erfer erence fr ence from a pow om a power erful r ful radio signal adio signal
sour source ce
Possible causes if the function of the key is
impaired:
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 automatic
barriers
#
Make sure that there is su cient distance
between the key and the potential source of
interference.
YYou hav ou have los e lost a key t a key
#
Have the key deactivated at a quali ed spe-
cialist workshop.
#
If necessary, have the mechanical lock
replaced as well.
Doors Doors
NNoottes on t es on the additional door lock he additional door lock
The additional door lock is only available for vehi-
cles for the United Kingdom.
&
W WARNING ARNING Risk of injury to persons inside
the vehicle when the additional door lock
is activated
If the additional door lock is activated, the
doors can no longer be opened from the
inside.
#
Never leave persons, in particular chil-
dren, unattended in the vehicle.
#
If there are persons in the vehicle, do not
activate the additional door lock.
The additional door lock is automatically activated
in the following situations:
R
The vehicle is locked using the key.
R
The vehicle is locked using KEYLESS-GO.
If the vehicle has been locked via Mercedes me
connect, the additional door lock is not activated
(
/
page 317).
If the additional door lock is activated, the doors
cannot be opened from the inside.
%
A er locking you can issue a signal with the
horn.
84 84 Opening and closing