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December 7, 2020 Service bulletin

When the Telematics Communication Unit (TCU) has been replaced or reprogrammed and the software is updated...

Mazda technical service bulletin 09-013-20-3663 for 2019 Mazda MAZDA3.

Bulletin number
09-013-20-3663
Component
Equipment adaptive/mobility
Summary
When the Telematics Communication Unit (TCU) has been replaced or reprogrammed and the software is updated to ones shown below, DTC U2050:55-TCU (Activation of remote control not implemented) may be stored in memory with the message, In-Vehicle Network Malfunction, displayed in the multi-information display.

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