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March 23, 2022 Service bulletin

Update the emergency call module control unit and communication unit software

Audi technical service bulletin Circular90T2REV2 for 2020 Audi A4, 2020 Audi S4 and 2020 Audi A5 and others.

Bulletin number
Circular90T2REV2
Component
Communication
Summary
Update the emergency call module control unit and communication unit software. Added claiming and work instructions in the event an Emergency Call Module Control Unit and Communication Unit is faulty.

Owners of these vehicles have filed 182 complaints in the electrical category.

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