Mercedes-Benz S-Class Saloon W223 2021 Owner's Manual page 525

Display messages
Please teach in trailer cou-
pling again using the but-
ton in load compartment
Wait for it to extend/
retract
Head-up display currently
unavailable See Owner's
Manual
Possible causes/consequences and
Uncouple the coupled trailer and secure it against rolling away.
#
If the ball neck has been retracted: initiate a new swivel movement (
#
The ball neck will engage vertically in the locked position and then engage beneath the bumper.
If the ball neck has been extended: initiate a new swivel movement (
#
The ball neck will engage beneath the bumper.
If the display message does not disappear, the trailer hitch is malfunctioning and the ball neck is not locked.
Do not couple up the trailer. Drive on without the trailer. Note the reduced ground clearance due to the unlocked
#
ball neck.
Consult a qualified specialist workshop.
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* The swivel movement of the trailer hitch is impaired.
Use the button on the boot lid to trigger a new, complete swivel movement until the ball neck engages beneath the
#
bumper.
* The head-up display is temporarily unavailable. Possible causes:
malfunctions in the power supply
R
signal interference
R
Stop the vehicle in accordance with the traffic conditions and switch the ignition off and on again.
#
If the display message still appears, consult a qualified specialist workshop.
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Solutions
M
P223 0288 02
Display messages and warning/indicator lamps 523
page 288).
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page 288).
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