Audi A6 Avant 2005 - Page 28

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28
Electrical systems
Immobiliser in automatic gearbox
In the Audi A6 Avant '05, the automatic gearbox was
integrated into the immobiliser. This is the case with
both 6-speed automatic gearbox 09L and
multitronic gearbox 01J. With model year '06 or
later, the automatic gearboxes in the A6 saloon and
in the A8 will also have an immobiliser function.
These gearboxes have a control unit which is
integrated into the gearbox (mechatronics). The
relatively sophisticated, and hence secure,
installation location serves as a deterrent to parts
theft. Because engagement for power transmission
is dependent on the gearbox control unit, this
immobiliser offers good protection against vehicle
theft.
The immobiliser still has the type designation
"Immobiliser 4", because it uses the same
technology as in the A8 '03.
Immobiliser topology
Legend
E415 Entry and start authorisation switch
J217 Automatic gearbox control unit
J518 Entry and start authorisation control unit
J533 Databus diagnosis interface
J623 Engine control unit
Component which is not integrated into the
immobiliser
Component which is integrated into the
immobiliser
Master control unit
PC / mainframe
344_013
J518 E415
J533
J623
J217