Mercedes-Benz S-Class Saloon W223 2021 Owner's Manual page 87

Problems with KEYLESS-GO, troubleshooting
You can no longer lock or unlock the vehicle using
KEYLESS-GO
Possible causes:
The function of the key has been deactivated.
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The key battery is weak or discharged.
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Activate the function of the key (
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Check the battery using the indicator lamp
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( page 78).
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Replace the key battery, if necessary
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( page 80).
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Use the replacement key.
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Use the emergency key to lock or unlock
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( page 86).
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Have the vehicle and key checked at a quali-
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fied specialist workshop.
There is interference from a powerful radio signal
source
Possible causes if the function of KEYLESS-GO is
impaired:
high voltage power lines
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mobile phones
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electronic devices (notebooks, tablets)
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shielding due to metal objects or induction
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loops for electrical gate systems or automatic
barriers
Make sure that there is sufficient distance
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between the key and the potential source of
page 79). interference.
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Activating or deactivating the automatic locking
feature
Multimedia system:
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Locking function
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The vehicle is locked automatically when the
ignition is switched on and the wheels are
turning faster than walking pace.
Activate or deactivate
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In the following situations, there is a danger of
being locked out when the function is activated:
The vehicle is being towed or pushed.
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Settings Vehicle
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Automatic locking.
P223 0288 02
Opening and closing
If the vehicle is being tested on a roller dyna-
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mometer.
Power closing function
& WARNING Risk of becoming trapped when
the doors close automatically
Body parts or objects can become trapped,
causing injuries.
Ensure that no body parts or objects are
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in the closing area.
Automatic closing of the doors can be
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cancelled by pulling the outer or inner
door handle.
If you push the door into the lock to the first
detent position, the power closing function will
automatically pull the door into the lock.
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If the vehicle is locked from the outside, or
while pulling away, an automatic closing of the
doors can be triggered.
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