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December 15, 2023 Service bulletin

Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC...

Mazda technical service bulletin 09-045-23 for 2024 Mazda CX-90 and 2023-2024 Mazda CX-50.

Bulletin number
09-045-23
Component
Electrical system: software
Summary
Some customers may experience a “Telematics Malfunction” message in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored in memory. This is caused by improper control software of the telematics communication unit (TCU). To eliminate this concern, the control software of the TCU has been modified.

Owners of these vehicles have filed 58 complaints in the electrical category.

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