Mercedes-Benz C-Class Wagon Owner's Manual page 540

Warning/indicator lamp
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 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.
& WARNING Risk of an accident if the ball neck is not locked
The trailer may become detached.
Stop the vehicle immediately in accordance with the traffic conditions. Do not continue driving.
#
Uncouple the trailer and secure it against rolling away.
#
Initiate a new swivel movement and do not re-couple the trailer until the warning/indicator lamp goes out.
#
Note the messages on the driver display.
#
M M Solutions
page 39).
M M Solutions
Display messages and warning/indicator lamps 537