Changing The Engine Oil And Filter; Replacing The Engine Air-Filter; Replacing The Fuel Filter; Replacing Spark Plugs - Mercedes-Benz C-Class Maintenance Booklet

Changing the engine oil and filter

Change the engine oil and oil filter according to
the specified maintenance intervals. If oil con-
sumption should increase, determine the cause
and take necessary corrective steps. Do not
reset the ASSYST PLUS service interval display
if the oil level is adjusted or changed outside the
specified maintenance intervals.

Replacing the engine air-filter

The engine air-filter must be replaced according
to the specified maintenance intervals. Under
severe dust conditions the engine air-filter
should be replaced more frequently than indi-
cated by the ASSYST PLUS service interval dis-
play. Clean air filter cover and housing prior to
removal of air filter.

Replacing the fuel filter

Replace the fuel filter according to the specified
maintenance intervals.

Replacing spark plugs

Spark plugs are subject to electrode erosion and
must be replaced according to the specified
maintenance intervals, or more frequently as
may be required when subject to severe oper-
ating conditions.

Maintenance work

All vehicles
Read out service data from instrument cluster and reset ASSYST PLUS service interval
1
display
Check warning and function indicator lamps in the instrument cluster
If the service and maintenance work has not, or has only partially been carried out after the ASSYST PLUS
1
service interval display has been reset, the maintenance computer must be reset to its original settings.
G
WARNING

Filling up DEF (Diesel Exhaust Fluid)

Fill up DEF according to the specified mainte-
nance intervals.

Maintenance service descriptions

Vehicle Maintenance Service Work
(including Emission System Mainte-
nance)
i
Maintenance services should be performed
at the number of miles or years (whichever
comes first) as indicated.
Detailed descriptions for the maintenance
service can be found starting on
( page 9).
Y
Additional maintenance work is taken into
account depending on time and distance
driven. Additional work includes maintenance
work carried out due to technical require-
ments in cases of wear or work carried out on
any optional equipment which might require
service.
For an overview of possible additional main-
tenance work, see (
For description of emission system mainte-
nance jobs, see (
Please make sure you read the technical documentation, such as
the Operator's Manual and workshop information, before carrying
out any maintenance work.
Maintenance work
page 16).
Y
page 8).
Y
•
•
9
•
•