your vehicle as well as on possible vehi‐
cle damage.
QR code for rescue card
The QR code is secured in the fuel filler flap and
on the opposite side on the B-pillar. In the event
of an accident, rescue services can use the QR
code to quickly find the appropriate rescue card
for your vehicle. The current rescue card con‐
tains the most important information about your
vehicle in a compact form, e.g. the routing of the
electric lines.
Further information can be obtained at http://
www.mercedes-benz.de/qr-code.
Data storage
Electronic control units
Electronic control units are installed in your vehi‐
cle. Some of these are necessary for the safe
operation of your vehicle, while some assist you
when driving (driver assistance systems). In
addition, your vehicle provides comfort and
entertainment functions, which are also made
possible by electronic control units.
Electronic control units contain data memories
which can temporarily or permanently store
technical information about the vehicle's operat‐
ing state, component loads, maintenance
requirements and technical events or malfunc‐
tions.
In general, this information documents the state
of a component part, a module, a system or the
surroundings such as:
R
Operating status of system components (e.g.
fill levels, battery status, tire pressure)
R
Status messages concerning the vehicle or
its individual components (e.g. number of
wheel revolutions/speed, longitudinal accel‐
eration, lateral acceleration, display of fas‐
tened seat belts)
R
Malfunctions or faults in important system
components (e.g. lights, brakes)
R
Information on events leading to vehicle
damage
R
System reactions in special driving situations
(e.g. airbag deployment, intervention of sta‐
bility control systems)
R
Ambient conditions (e.g. temperature, rain
sensor)
In addition to providing the actual control unit
function, this data assists the manufacturer in
detecting and rectifying malfunctions and opti‐
mizing vehicle functions. The majority of this
data is temporary and is only processed in the
vehicle itself. Only a small portion of the data is
stored in the event or fault memory.
When your vehicle is serviced, technical data
from the vehicle can be read out by service net‐
work employees (e.g. workshops, manufactur‐
ers) or third parties (e.g. breakdown services).
Services include repair services, maintenance
processes, warranty claims and quality assur‐
ance measures, for example. The read out is per‐
formed via the legally prescribed port for the
diagnostics connection in the vehicle. The
respective service network locations or third
parties collect, process and use the data. They
document technical statuses of the vehicle,
General notes
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