Mercedes-Benz S-Class Saloon W223 2021 Owner's Manual page 579

Warning/indicator lamp
ü
Seat belt warning lamp
flashes
ü
Seat belt warning lamp
lights up
Vehicle
Warning/indicator lamp
ï
Trailer tow hitch warning
lamp
Possible causes/consequences and
* The red seat belt warning lamp flashes and an intermittent warning tone sounds.
The driver or front passenger has not fastened his/her seat belt while the vehicle is in motion.
Fasten your seat belt (
/
#
There are objects on the front passenger seat.
Remove the objects from the front passenger seat.
#
* The red seat belt warning lamp lights up once the engine has started.
In addition, an intermittent warning tone may sound.
The red seat belt warning lamp reminds the driver and front passenger to fasten their seat belts.
Fasten your seat belt (
/
#
If you have placed objects on the front passenger seat, the red seat belt warning lamp may remain lit.
Possible causes/consequences and
* The red trailer hitch warning lamp is lit.
The trailer hitch is not operational or is swivelling.
& WARNING Risk of an accident if the ball neck is not locked
The trailer may become detached.
Solutions
M
page 46).
page 46).
Solutions
M
P223 0288 02
Display messages and warning/indicator lamps 577