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January 15, 2020 Service bulletin

Telematics communication unit (TCU) initialization procedure

Mazda technical service bulletin SA-010-20 for 2019-2020 Mazda MAZDA3 and 2020 Mazda CX-30.

Bulletin number
SA-010-20
Component
Equipment
Summary
TELEMATICS COMMUNICATION UNIT (TCU) INITIALIZATION PROCEDURE: When the Telematics Control Unit (TCU) replacement is necessary due to a failure, use MDARS to initialize 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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