Mercedes-Benz S-Class 2019 Operator's Manual page 536

534 Display messages and warning/indicator lamps
Warning/indicator lamp
h
Tire pressure monitoring
system warning lamp
flashes
Possible causes/consequences and
Observe the recommended tire pressure.
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Adjust the tire pressure if necessary.
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Stop the vehicle, paying attention to road and traffic conditions.
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Check the tire pressure and the tires.
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The yellow tire pressure monitoring system warning lamp (pressure loss/malfunction) flashes for approximately one
minute and then remains lit.
The tire pressure monitoring system is defective.
& WARNING There is a risk of an accident if the tire pressure monitoring system is malfunctioning
If the tire pressure monitoring system is malfunctioning, it is not able to issue a warning if there is pressure loss in
one or more of the tires.
Underinflated tires may, for example, impair the driving, steering and braking characteristics.
Have the tire pressure monitoring system checked at a qualified specialist workshop.
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Visit a qualified specialist workshop.
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