Mercedes-Benz S 450 4MATIC Operator's Manual page 669

Practical hints
What to do if ...?
Display
Parking Brake
See Oper. Manual
(USA only)
(Canada only)
668
Possible cause/consequence
The red indicator lamp for the electronic
parking brake flashes.
The power supply for the electronic parking
brake was malfunctioning or the electronic
parking brake was previously mechanically
released.
Possible solution
Pull handle for electronic parking brake
( page 422).
or
Carefully drive off ( page 422).
or
Press handle for electronic parking brake un-
til the warning message disappears from the
multifunction display.