service schedule MERCEDES-BENZ M-Class 2012 W166 Owner's Manual

Useful
information
i This
Operat or'sManual describesall
models andallstan dard andoption al
equipment ofyour vehicle available atthe
time ofpublication ofthe Operat or's
Manual. Country-specificdiffer encesare
possible. Pleasenotethat your vehicle may
not beequipped withallfeature s
descr ibed. Thisalso applies tosafet y-
related systemsand func tions. i
Please
readtheinfor mation onqualified
specialist workshops(Ypage 25). Overview
ofclimat econtrol systems Impor
tant safet ynotes G
WARN
ING Sever
econ dition s(e.g. strong airpollution )
may require replacem entofthe filter before
its scheduled replacementinterval. Aclogged
filt er will reduc ethe airvolume tothe interior
and thewindows couldfogup,impairin g
visibilit yand endan geringyou and others.
Have ablock edfilterreplac edataMerc edes-
Ben zCent eras soon aspossible. G
WARN
ING Follow
therecom mended settings forheating
and cooling givenonthe following pages.
Other wise, thewindows couldfogup,
impairing visibilityandendanger ingyou and
other s.
Autom aticclimate control controls the
temper atureandthehumidity ofthe vehicle
int erior andfilters outundesirable
substanc esfrom theair.
Autom aticclimate control isonly operation al
when theengine isrunn ing9
.O ptimum
operation isonly achieved ifyou drive withthe
side windows andsliding sunroof /panorama
roof with power tilt/sliding panelclosed. i
Vent
ilate thevehicle forabrief period
during warmweather, e.g.using the
con venien ceopenin gfeature (Ypage 86).
This willspeed upthe coolin gproces sand
the desired vehicleinterior temper ature
will bereached morequickly. i
The
integrated filtercanfilter outmost
partic lesofdust andcomplet elyfilter sout
pollen. Aclogged filterreduc esthe amoun t
of air supplied tothe vehic leint erior .For
this reason, youshould alwaysobserve the
inter valforreplacing thefilter, which is
specified inthe Servic eBooklet .Asit
depends onenvironmen talconditions, e.g.
heavy airpollu tion, theinterval maybe
shorter thanstated inthe Service Booklet.
9 The residua lheat function canonly beactivated/deactivated whentheignition isswitched off. 122
Overview
ofclimat econ trol systemsClimate control

X
Raise cover :atthefron t.
X Pull outcover :inthedir ection ofthe
arr ow. The
brak efluid levelisco rrec tifiti sbetween
MIN marking ?and MAX marking =onthe
brake fluidreservoir.
Cover :isinstalled inthe reverse order.
When doingso,make surethattheguide sof
cover :engage inthe slots inthe bulkhead . Maintenance
Service
interval display
Service messages Information
onthe type ofservice andservice
intervals (seeseparate ServiceBooklet).
You canobtain further information froman
authorized Mercedes-Benz Centerorat
http: //www.mbusa.com (USAonly).
The service interval message informsyouof
the next service duedate. The
multifunction displayshows aservice
message forseveral seconds, e.g.: Next
Service ADue in..Days Service
ADue Service
AExceeded by... Days The
letter indicates whichservice isdue. A
stands
foraminor service and B for
amajor
service. Anumber oranother lettermaybe
displa yedafter theletter. Thisfigure indicates
any necessary additionalmaintenance work
to be performed.
You canobtain further information froman
authorized Mercedes-Benz Center.
The service interval displaydoes nottake into
account anyperiods oftime during whichthe
battery isdisconn ected.
Maintaining thetime-depen dentservice
schedule:
X Note down theservice duedate display ed
in the multifunct iondisplay before
disconn ectingthe battery.
or
X Subtract thebattery disconn ectionperiods
from theservice dateshown onthe display
after recon nectingthe battery. i
The
service intervaldisplay doesnot
provide anyinformat ionregarding the
engine's oillevel. Observe thenoteson the
engine oillevel (Ypage 313).
Hiding aserv ice mes sage X
Pres sth e% ora buttononthe
st eerin gwheel.
Displa yingservice messages X
Swit chon theign itio n.
X Pres s= or; onthest eerin gwheel
to selec tthe Serv. menu.
X Press 9or: toselect the ASSYST
PLUS submenu
andpress atoconfirm .
The service duedate appea rsinthe
multifunction display. Maintenance
317Maintenance and care Z