November 10, 2025 Service bulletin

This bulletin provides a software update when the volume control cannot be operated, background lighting...

Audi technical service bulletin TSB_2079999_1 for 2025 Audi Q5, 2025 Audi A5 and 2025 Audi S5 and others.

Bulletin number: TSB_2079999_1
Component: Electrical system
Summary: This bulletin provides a software update when the volume control cannot be operated, background lighting not working; DTC U11B900 voume control, no communication.

Owners of these vehicles have filed 64 complaints in the electrical category.

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