32 General notes
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 https://
In general, this information documents the state
of a component part, a module, a system or the
surroundings such as:
temporary and is only processed in the vehicle
itself. Only a small portion of the data is stored
in the event or fault memory.
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operating status of system components (e.g.
fill levels, battery status, tyre pressure)
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, for example, repair services,
maintenance processes, warranty claims and
quality assurance measures. 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,
assist in finding faults and improving quality and
are transmitted to the manufacturer, if neces‐
sary. Furthermore, the manufacturer is subject
to product liability. For this, the manufacturer
requires technical data from vehicles.
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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)
Data storage
Electronic control units
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malfunctions or faults in important system
components (e.g. lights, brakes)
Electronic control units are fitted in your vehicle.
Some of these are necessary for the safe opera‐
tion 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 elec‐
tronic 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 faults.
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information on events leading to vehicle
damage
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system reactions in special driving situations
(e.g. airbag deployment, intervention of sta‐
bility control systems)
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ambient conditions (e.g. temperature, rain
sensor)
Fault memories in the vehicle can be reset by a
service outlet as part of repair or maintenance
work.
In addition to providing the actual control unit
function, this data assists the manufacturer in
detecting and rectifying faults and optimising
vehicle functions. The majority of this data is
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