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May 6, 2026 Service bulletin

The high-voltage batteries in electric vehicles are subject to various ageing effects which could lead to...

Audi technical service bulletin TSB_2074808_4 for 2013-2025 Audi A4, 2013-2026 Audi A6 and 2013-2026 Audi Q5 and others.

Bulletin number
TSB_2074808_4
Component
Power train
Summary
The high-voltage batteries in electric vehicles are subject to various ageing effects which could lead to the energy content (energy density) being reduced. This reduction in the energy content, which is due to factors. Revised header. Added Model years

Owners of these vehicles have filed 443 complaints in the transmission category.

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