Mercedes-Benz S-Class Owner's Manual page 601

Warning/indicator lamp Possible causes/consequences and
Pull over and stop the vehicle safely as soon as possible, paying attention to road and traffic conditions. Do not
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continue driving under any circumstances.
Observe the messages on the multifunction display.
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Consult a qualified specialist workshop.
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The yellow ABS warning lamp is lit while the engine is running.
ABS is malfunctioning.
If there is an additional warning tone, EBD is malfunctioning.
ABS warning lamp
Other driving systems and driving safety systems may also be malfunctioning.
& WARNING There is risk of skidding if EBD or ABS is malfunctioning
If EBD or ABS is malfunctioning, the wheels could lock when braking
The steering capability and braking characteristics are thus severely impaired. The braking distance may increase in
an emergency braking situation. In addition, other driving safety systems are switched off.
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Drive on carefully.
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Observe the messages on the multifunction display.
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Consult a qualified specialist workshop.
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Drive on carefully.
Have the brake system checked immediately at a qualified specialist workshop.
Display messages and warning/indicator lamps 599
Solutions