Mercedes-Benz C-Class Wagon Owner's Manual page 504

Display messages
Possible causes/consequences and
If it is not possible to apply the electric parking brake or the red ! indicator lamp continues to flash:
Do not continue driving. Consult a qualified specialist workshop.
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Where necessary, also secure the parked vehicle against rolling away.
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* The yellow ! indicator lamp is lit and the red ! indicator lamp flashes for approximately ten seconds after
the electric parking brake has been applied or released. It then remains lit or goes out. The electric parking brake is
malfunctioning.
If the state of charge is too low:
Charge the 12 V battery.
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To apply:
Apply the electric parking brake manually.
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If it is not possible to apply the electric parking brake:
Consult a qualified specialist workshop.
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Where necessary, also secure the parked vehicle against rolling away.
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To release:
If the conditions for automatic release are fulfilled and the electric parking brake is not released automatically,
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release the electric parking brake manually (
If it is still not possible to release the electric parking brake:
Display messages and warning/indicator lamps 501
M M Solutions
page 189).
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