Practical hints
What to do if ...
Display symbol
Display messages
:
Engine oil level
Reduce oil level
Oil sensor malfunction
Visit workshop
Change engine oil
Visit workshop
406
Possible cause/consequence
E 500, E 55 AMG only:
You have added too much engine oil.
There is a risk of damaging:
the engine
the catalytic converter
E 500, E 55 AMG only:
The measuring system is malfunctioning.
E 500, E 55 AMG only:
It may be that there is water in the engine
oil.
Possible solution
Have oil siphoned or drained off. Ob-
serve all legal requirements with re-
spect to its disposal.
Have the measuring system checked
by an authorized Mercedes-Benz
Center.
Have the engine oil and the cooling
system checked.