Mercedes-Benz S-Class Saloon W223 2021 Owner's Manual page 291

Extending the ball neck fully electrically
Pull button 2.
#
1
Indicator lamp will flash and the display
message Trailer coupling in motion
appear on the driver's display.
The ball neck will extend fully electrically.
Wait until the ball neck has locked in place.
#
When indicator lamp
ball neck is securely locked in place.
If the ball neck is not securely locked in place,
indicator lamp
message Check trailer hitch lock
on the driver's display.
will
P223 0288 02
1 is continuously lit, the
1
will flash and the display
will appear
Driving and parking 289
Retracting the ball neck fully electrically
Pull button 2.
#
Indicator lamp 1 will flash and the display
message Trailer coupling in motion
appear on the driver's display.
The ball neck will retract fully electrically.
Wait until the ball neck has locked in place.
#
When indicator lamp 1 goes out, the ball
neck is securely locked in place.
If the ball neck is not securely locked in place,
indicator lamp 1 will flash and the display
message Trailer coupling Check lock
appear on the driver's display.
Observe the information about the notifications
on the driver's display:
Indicator and warning lamps (
R
Display messages ( page 510)
/
R
will
will
page 575)
/