the driver or vehicle owner, for instance, via the
ConnectedDrive account that is used.
Operating data in the vehicle
Control units process data to operate the vehicle.
For example, this includes:
▷ Status messages for the vehicle and its indi‐
vidual components, e.g., wheel rotational
speed, wheel speed, deceleration, lateral ac‐
celeration, engaged safety belt indicator.
▷ Ambient conditions, e.g., temperature, rain
The processed data is only processed in the ve‐
hicle itself and generally volatile. The data is not
stored beyond the operating period.
Electronic components, e.g. control units and ig‐
nition keys, contain components for storing tech‐
nical information. Information about the vehicle
condition, component usage, maintenance rec‐
ommendations, events or faults can be stored
temporarily or permanently.
This information generally records the state of a
component, a module, a system, or the environ‐
ment, for instance:
▷ Operating states of system components, for
instance, fill levels, tire inflation pressure, bat‐
▷ Malfunctions and faults in important system
components, for instance lights and brakes.
▷ Responses by the vehicle to special situa‐
tions such as airbag deployment or engage‐
ment of the driving stability control systems.
▷ Information on vehicle-damaging events.
The data is required to perform the control unit
functions. Furthermore, it also serves to recog‐
nize and correct malfunctions, and helps the ve‐
hicle manufacturer to optimize vehicle functions.
The majority of this data is stored temporarily
and is only processed within the vehicle itself. In
some circumstances the vehicle may store some
data for an additional but limited period of time.
When servicing, for instance during repairs, serv‐
ice processes, warranty cases, and quality assur‐
ance measures, this technical information can be
read out from the vehicle together with the vehi‐
cle identification number.
A dealer’s service center or another qualified
service center or repair shop can read out the in‐
formation. The socket for OBD Onboard Diagno‐
sis required by law in the vehicle is used to read
out the data.
The data is collected, processed, and used by
the relevant organizations in the service network.
The data documents technical conditions of the
vehicle, which can be used to determine vehicle
maintenance status, and facilitate quality im‐
Fault and event memories in the vehicle can be
reset when a dealer’s service center or another
qualified service center or repair shop performs
repair or servicing work.
Data entry and data transfer into
Depending on the vehicle equipment, comfort
and individual settings can be stored in the vehi‐
cle and modified or reset at any time.
For example, this includes:
▷ Settings for the seat and steering wheel posi‐
▷ Suspension and climate control settings.
If necessary, data can be transferred to the en‐
tertainment and communication system of the
vehicle, for instance via smartphone.
This includes the following depending on the re‐
▷ Multimedia data such as music, films or pho‐
tos for playback in an integrated multimedia
▷ Address book data for use in conjunction with
an integrated hands-free system or an
integrated navigation system.
Online Edition for Part no. 01405A10E93 - VI/20