Mercedes-Benz CL-Class 2006 Owner's Manual page 451

Practical advice
Display messages
Display symbol Display messages
* Key not
detected
Top up
coolant
See Owner's Manual
430
Possible cause/consequence
The key is not in the vehicle.
It will not be possible to centrally lock
or start the vehicle after the engine is
switched off.
The KEYLESS GO* key is not detected
while the engine is running because
there is interference from a powerful
source of radio waves.
The KEYLESS GO* key cannot be de-
tected at present.
The coolant level is too low.
Possible solution
Stop the vehicle as soon as it is safe to do
so.
Find the KEYLESS GO* key.
Stop the vehicle as soon as it is safe to do
so.
Operate the vehicle using the KEYLESS
GO* key in the ignition lock underneath the
KEYLESS GO* button ( page 229).
Alter the position of the key in the vehicle.
Operate the vehicle with the key if neces-
sary.
Top up the coolant, observing the warning
notes ( page 379).
If you have to top up the coolant more fre-
quently, have the coolant system checked
at a qualified specialist workshop.