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December 10, 2020 Service bulletin

Some customers may experience the master warning light and/or the "In-Vehicle Network Malfunction" warning...

Mazda technical service bulletin 09-021-20-3714b for 2019-2021 Mazda MAZDA3 and 2020-2021 Mazda CX-30.

Bulletin number
09-021-20-3714b
Component
Equipment: electrical: antenna
Summary
Some customers may experience the master warning light and/or the "In-Vehicle Network Malfunction" warning message in the instrument cluster on with DTC B119F:01, B119F:13 and/or B119F:2B stored when the vehicle position cannot be displayed correctly.

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