Audi A5 - The Audi Service Key

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Convenience system central control unit
Introduction
The ignition key of the new Audi A5 supports a new
function known as "Audi Service Key". This key sup-
ports service processes by saving a variety of vehi-
cle data.
Actual vehicle information is written at predefined
intervals to a rewritable memory chip integrated in
the key. This information can be read out using a
special reader which is connected to the workshop
computer via the USB interface.
The data read out can be displayed on a screen
using software. A facility has also been provided
which allows various service systems (e.g. ELSA) to
read in this data directly. Therefore, there is no
longer any need for the time-consuming and error-
prone process of entering data manually.
The "Audi Service Key"
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Stored information
The following vehicle information is stored on the "Service Key":
– last-saved date and time
– mileage at last-saved date
– current service interval status
– transponder ID