Mercedes-Benz EQC Owner's Manual page 554

Vehicle
Display messages
d
Vehicle is operational
Switch off ignition before
exiting
ï
Trailer coupling extending...
ï
Check trailer hitch lock
(white display message)
Possible causes/consequences and
* You are leaving the vehicle when it is in a ready-to-drive state.
When you leave the vehicle, switch off the ignition, secure the vehicle against rolling away and take the key with
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you.
If you do not leave the vehicle, switch off the electrical consumers, e.g. the seat heating. Otherwise, the 12 V
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battery may discharge and it will then be possible to start the vehicle only with the aid of a second battery
(starting assistance).
* The ball neck will retract/extend.
Do not attempt to speed up, slow down or initiate the swivel movement using your hand, foot or other aids. During
the swivel movement, do not couple a trailer.
When the ball neck has reached an operational position, the display message will disappear.
* The trailer hitch is not operational during a journey with a trailer.
Stop the vehicle immediately in accordance with the traffic conditions and switch off the drive system.
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Uncouple the trailer and secure it against rolling away.
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To initiate a new swivel movement, press and hold the button on the tailgate until the ball neck engages
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beneath the bumper (
/
When the display message disappears, couple up the trailer and drive on.
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M M Solutions
page 256).
Display messages and warning/indicator lamps 551