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September 26, 2025 Service bulletin

Technical information for a Diagnosis and Handling of 12-Volt Lithium-Ion Battery (Vehicle Electrical...

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 a Diagnosis and Handling of 12-Volt Lithium-Ion Battery (Vehicle Electrical System Battery)

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

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