Mercedes-Benz 2009 CLS-Class Operator's Manual page 280

Practical hints
Vehicle status messages in the multifunction display
Display messages
Coolant
Ì
Stop Vehicle, turn
engine off.
G Warning!
Driving when your engine is overheated can cause some fluids which may have leaked into the engine compartment to catch fire. You could
be seriously burned.
Steam from an overheated engine can cause serious burns which can occur just by opening the engine hood. Stay away from the engine if
you see or hear steam coming from it.
Stop the vehicle in a safe location away from other traffic. Turn off the engine, get out of the vehicle and do not stand near the vehicle until
the engine has cooled down.
278
Possible cause/consequence
The coolant is too hot.
Possible solution
X
Stop the vehicle in a safe location or as soon
as possible.
X
Turn off the engine immediately.
X
Only start the engine again after the message
disappears. You could otherwise damage the
engine.
X
Engage the parking brake.
X
Observe the coolant temperature indicator in
the instrument cluster.
X
If the temperature rises again: Contact an
authorized Mercedes-Benz Center immedi-
ately.
During severe operation conditions and stop-
and-go city traffic, the coolant temperature may
rise close to 248‡ (120†).