Useful information
i This Operator's Manual describes all
models and all standard and optional equip- ment of your vehicle available at the time of
publication of the Operator's Manual.
Country-specific differences are possible.
Please note that your vehicle may not be
equipped with all features described. This
also applies to safety-related systems and
functions.
i Read the information on qualified special-
ist workshops: (Y page 24). Overview of climate control systems
Important safety notes
Observe the settings recommended on the
following pages. The windows could other-
wise fog up. This could prevent you from
observing the traffic conditions, thereby
causing an accident.
Climate control regulates the temperature
and the humidity in the vehicle interior and
filters undesirable substances from the air.
Dual-zone automatic climate control is only
operational when the engine is running. Opti-
mum operation is only achieved if you drive
with the side windows and sliding sunroof
closed.
The climatic comfort deteriorates whilst the
sliding sunroof is open. The automatic climate control cannot maintain the set temperature
with the sliding sunroof open. You have to
adjust the climate control manually.
i The residual heat function can only be
activated or deactivated with the ignition
switched off (Y page 127).
i Ventilate the vehicle for a brief period
during warm weather, e.g. using the con-
venience opening feature (Y page 78). This
will speed up the cooling process and the
desired vehicle interior temperature will be reached more quickly. i
The integrated filter can filter out most
particles of dust, and completely filters out pollen. A clogged filter reduces the amount
of air supplied to the vehicle interior. For
this reason, you should always observe the interval for replacing the filter, which is
specified in the Maintenance Booklet. As it depends on environmental conditions, e.g. heavy air pollution, the interval may be
shorter than stated in the Maintenance
Booklet. 118
Overview of climate control systemsClimate control 
Maintaining the time-dependent service
schedule:
X Before disconnecting the battery, note
down the service due date displayed.
or: X After reconnecting the battery, subtract
the battery disconnection periods from the
service date shown on the display.
i The service interval display should not be
confused with the 4engine oil level dis-
play.
The symbol and the letter indicate which type
of service is due:
¯ Minor service A A
± Major service B
B
The ASSYST service interval display does not
take into account any periods of time during
which the battery is disconnected.
Hiding a service message X
To hide the service message, press the
% back button on the multifunction
steering wheel (Y page 33)(Ypage 199).
Displaying service messages Use the buttons on the multifunction steering
wheel.
X Switch on the ignition.
X Press =or; to select the standard
display menu on the steering wheel
(Y page 200).
X Press 9or: to select the service
interval display.
The ¯ or± service symbol and the
service due date are displayed. Points to remember The specified maintenance interval takes only
the normal operation of the vehicle into
account. Under arduous operating conditions
or increased load on the vehicle, mainte-
nance work must be carried out more fre-
quently, for example:
R regular city driving with frequent intermedi-
ate stops
R if the vehicle is primarily used to travel
short distances
R use in mountainous terrain or on poor road
surfaces
R if the engine is often left idling for long peri-
ods
Under these or similar conditions, have, for
example, the air filter, engine oil and oil filter
replaced or changed more frequently. Under
arduous operating conditions, the tires must
be checked more often. Further information
can be obtained at a qualified specialist work- shop, e.g. an authorized Mercedes-Benz Cen-
ter. Fuel/water separator
H
Environmental note
Dispose of service products in an environ-
mentally responsible manner.
! If you continue driving without having the
fuel/water separator serviced, this could
cause damage to the engine. Any resulting
damage is not covered by the warranty.
If the fuel/water separator needs servicing,
the following message appears in the multi-
function display: You will also hear a brief warning tone.280
MaintenanceMaintenance and care