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September 17, 2026 Service bulletin

This is a Technical Journal: Text plus 1 PDF -- DTC TCM P277C07 set

Volvo technical service bulletin 36774.4.0 for 2025-2026 Volvo XC60MHEV, 2024-2027 Volvo XC90MHEV and 2024 Volvo V60ccmhev and others.

Bulletin number
36774.4.0
Component
Power train
Summary
This is a Technical Journal: Text plus 1 PDF -- DTC TCM P277C07 set. If the TCM DTC listed below is set, A new transmission hardware solution has been introduced starting from transmission serial number 25M8L30144, which serves as a defined break point for updated production. If the DTC is confirmed and the transmission serial number is after the break point: Do NOT replace the transmission follow the advise under "Service".

Owners of these vehicles have filed 1 complaints in the transmission category.

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