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October 8, 2025 Service bulletin

When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate...

Mazda technical service bulletin SA-047-25 for 2019-2026 Mazda MAZDA3, 2021-2025 Mazda CX-5 and 2021-2023 Mazda CX-9 and others.

Bulletin number
SA-047-25
Component
Unknown or other
Summary
When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to activate the new TCU after replacement. Use the information in this service alert to initialize the new TCU until the procedure on MGSS is updated.

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