OBD port MERCEDES-BENZ E-CLASS ESTATE 2017 Owners Manual

Ve
hicl edata storage Information from electronic control units
Electronic control unit
sarefitted in your vehicle.
Some of these ar enecessar yfor thes afeo pera‐
tion of your vehicle, while some assis tyou when
driving (driver assi stanc esystems). In addition,
yo ur vehicle pr ovides con venience and enter tain‐
men tfunctions, whic harealso made possible by
electronic control units.
Elect ronic control units contai ndatam emories
which cantemp orarily or permanently store
te ch nica linformatio nabout thev ehicle's operat‐
ing status ,component loads, main tenance
re qu irements and tech nica levents or faults.
In general ,this information documents thes tate
of ac omponent part, amodule, asystemort he
sur rounding ssucha s:
R operatin gstatuses of sy stem components
(e.g. fluid le vels, batter ystatus ,tyrep res‐
sure)
R status messages concernin gthe vehicle and
its individualc omponents(e.g. number of
wheel revo lutions/speed, decele ration, lat‐ eral acceleration, displa
yofthefastened seat
belts)
R malfunctions or defectsini mportant sy stem
components (e.g. lights, brakes)
R information on vehicle damag eevents
R system reaction sinspecial drivin gsituations
(e.g. airbag deployment, inter ventio nofs ta‐
bilit ycontrol sy stems)
R ambient conditions (e.g. temp erature, rain
sensor)
In addition toprov iding thea ctual control unit
function ,this dat aassists them anufacturer in
de tecting and rectifying faults and optimising
ve hicle functions. The majority of this dat ais
te mp orar yand is onl yprocessed in thev ehicle
itself. Onl yasmall portion of thed ataiss tored
in thee vent or fault memor y.
When your vehicle is serviced, tech nica ldata
from thev ehicle can be read out byservice net‐
wo rkemplo yees or thirdp arties .Services
include repair services, maintenanc eprocesses,
wa rrant yevents and qualit yassurance meas‐
ures, fore xamp le. The read out is per form ed via
th el egall yprescribed por tfor OBD ("on-board diagnostics"
)inthevehicle. The respective
service networ klocations or thirdp arties col‐
lect ,proces sand use thed ata. The ydocument
te ch nica lstatuses of thev ehicle, assis tinfind‐
in gf aults and impr oving qualit yand ar etrans‐
mit tedtot he manufacturer ,ifnecessar y.Fu r‐
th ermore, them anufacturer is subject toprod‐
uct liability .For this, them anufacturer requ ires
te ch nica ldataf romv ehicles.
Fa ult memories in thev ehicle can be rese tbya
service outle taspartofr epair or maintenance
wo rk.
The ycan enter dat aintot he vehicle's con veni‐
ence and inf otainment function sthemselves as
par toft he selected equipment.
This includes, fore xamp le:
R multimedia dat asuchasm usic,films or pho‐
to sf or playbac kinanintegrated multimedia
sy stem
R address book dat afor use in connection with
an integrated hands-free sy stem or an inte‐
grated navigation sy stem
R entered navigation destinations
R dataabout theu se of Interne tservices 28
General no tes