Mercedes-Benz A-Class Operator's Manual page 481

Seat belts
Warning/indicator lamp
Possible causes/consequences and
7
After the engine is started, the red seat belt warning lamp lights up for six seconds.
In addition, an acoustic warning tone may sound.
The seat belt warning lamp reminds the driver and front passenger to fasten their seat belts.
Seat belt warning lamp
#
lights up
If you have placed objects on the front passenger seat, the seat belt warning lamp may remain lit.
7
The red seat belt warning lamp flashes and an intermittent warning tone sounds.
The driver or front passenger has not fastened their seat belt while the vehicle is in motion.
#
Seat belt warning lamp
There are objects on the front passenger seat.
flashes
#
Fasten your seat belt( page 37).
→
Fasten your seat belt( page 37).
→
Remove the objects from the front passenger seat.
Display messages and warning/indicator lamps 479
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