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September 21, 2026 Service bulletin

Overheating has been observed at the alternator power cable and ground cable connection, resulting in...

Volvo technical service bulletin TSB 373-001 202609 for 2002-2027 Volvo VN, 2002-2027 Volvo VHD and 2023-2027 Volvo VNL (4) and others.

Bulletin number
TSB 373-001 202609
Component
Electrical system
Summary
Overheating has been observed at the alternator power cable and ground cable connection, resulting in melted insulation around the terminal area. The alternator power cable connection should maintain a stable electrical contact without overheating or insulation damage during normal vehicle operation. The alternator power cable shows signs of overheating and melted insulation at the connection point, which may affect electrical conductivity and charging system performance.

Owners of these vehicles have filed 12 complaints in the electrical category.

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