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July 25, 2025 Service bulletin

Technical information for the diagnosis and handling of 12 volt lithium ion battery: Cayenne, 911, and Taycan

Porsche technical service bulletin No. 31-20 for 2018-2026 Porsche Cayenne, 2020-2026 Porsche Taycan and 2018-2026 Porsche 911 and others.

Bulletin number
No. 31-20
Component
Electrical system
Summary
Technical information for the diagnosis and handling of 12 volt lithium ion battery: Cayenne, 911, and Taycan

Owners of these vehicles have filed 187 complaints in the electrical category.

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