Mercedes-Benz C-Class Saloon 2022 Owner's Manual page 514

Display messages
Traffic Sign Assist currently
unavailable See Owner's
Manual
Traffic Sign Assist inopera-
tive
ä
Fault Drive at max. 80
km/h
Possible causes/consequences and
* Traffic Sign Assist is temporarily unavailable.
Once the cause of the problem is no longer present, the system will be available again.
Continue driving in compliance with the traffic regulations.
#
* Traffic Sign Assist is malfunctioning.
Continue driving in compliance with the traffic regulations.
#
or
Stop the vehicle in accordance with the traffic conditions and restart the vehicle.
#
If the display message does not disappear: consult a qualified specialist workshop.
#
* Plug-in hybrid:
The rear axle level control is malfunctioning The vehicle's handling characteristics may be affected.
No faster than 80 km/h.
#
Consult a qualified specialist workshop.
#
Solutions
M
Display messages and warning/indicator lamps 511