Mercedes-Benz GLC 2019, Owner'S Manual

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Vehicle
Display messages Possible causes/consequences and M M Solutions
d
Vehicle is operational
Switch off the ignition
before exiting
* 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
you.
#
If you do not leave the vehicle, switch off the electrical consumers, e.g. the seat heater. Otherwise, the 12‑V
battery may discharge and it will then be possible to start the vehicle only using a donor battery (starting assis‐
tance).
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Trailer coupling extending…
* Extending or retracting the ball neck.
Do not attempt to speed up, slow down or initiate the retracting or extending process using your hand, foot or other
aids. During the retracting or extending process, do not couple a trailer.
When the ball neck has reached an operational position, the display message disappears.
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Check trailer hitch lock
(white display message)
* The trailer tow hitch will not be operational when you drive with a trailer.
#
Stop the vehicle immediately, paying attention to road and traffic conditions, and switch off the engine.
#
Uncouple the trailer and secure it against rolling away.
#
Initiate a new swivelling procedure (
/
page 252).
#
If the ball neck is extended, press and hold the button on the boot lid until the ball neck engages beneath the
bumper.
#
When the display message disappears, couple up the trailer and drive on.
572 Display messages and warning/indicator lamps