Mercedes-Benz S-Class Owner's Manual page 605

Warning/indicator lamp Possible causes/consequences and
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Seat belt
Warning/indicator lamp Possible causes/consequences and
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The red seat belt warning lamp will light up once the engine has started.
In addition, a warning tone may sound.
The seat belt warning lamp reminds the driver and front passenger to fasten their seat belts.
Seat belt warning lamp
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lights up
If you have placed objects on the front passenger seat, the seat belt warning lamp may remain lit.
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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.
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Seat belt warning lamp
There are objects on the front passenger seat.
flashes
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Drive on carefully.
Observe the messages on the multifunction display.
Consult a qualified specialist workshop immediately.
Fasten your seat belt ( page 36).
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Fasten your seat belt( page 36).
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Remove the objects from the front passenger seat.
Display messages and warning/indicator lamps 603
M M Solutions
M M Solutions