Mercedes-Benz S 450 4MATIC Operator's Manual page 683

Practical hints
What to do if ...?
Display
Coolant Low
Stop Vehicle
Turn Engine Off
682
Possible cause/consequence
The cooling fan for the coolant is malfunc-
tioning.
You are driving with one or more doors
open.
The display symbol shows you which doors
are open.
Possible solution
Restart the engine.
If this message disappears from the multi-
function display:
Drive immediately to the nearest autho-
rized Mercedes-Benz Center.
If this message does not disappear from the
multifunction display:
Call Roadside Assistance.
Observe the coolant temperature gauge in
the instrument cluster ( page 28).
Have the fan replaced as soon as possible.
Close the doors.