“In Vehicle Network Malfunction” message appearing in the instrument cluster with DTC U3000:04-TCU...
Mazda technical service bulletin 09-001-23a for 2021-2023 Mazda MAZDA3, 2021-2023 Mazda CX-5 and 2021-2023 Mazda CX-9 and others.
- Bulletin number
- 09-001-23a
- Component
- Electrical system
- Summary
- Some vehicles may exhibit an “In Vehicle Network Malfunction” message appearing in the instrument cluster with DTC U3000:04-TCU (Telematics communication unit internal malfunction) stored after the connected service contract has been discontinued. 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 81 complaints in the electrical category.
Vehicles covered
- Mazda MAZDA3 2021-2023 202120222023
- Mazda CX-5 2021-2023 202120222023
- Mazda CX-9 2021-2023 202120222023
- Mazda CX-30 2021-2023 202120222023
- Mazda CX-50 2023 2023
- Mazda MX-30 2022-2023 20222023
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