Some customers may experience a "IN-VEHICLE NETWORK MALFUNCTION" warning message in the instrument cluster...
Mazda technical service bulletin SA-029-20a for 2019-2020 Mazda MAZDA3 and 2020 Mazda CX-30.
- Bulletin number
- SA-029-20a
- Component
- Equipment
- Summary
- Some customers may experience a "IN-VEHICLE NETWORK MALFUNCTION" warning message in the instrument cluster with one or more of the following DTC's stored: ï· B119F:01 TCU - Tel antenna No. 1 malfunction ï· B1252:87 TCU - Communication error with connectivity master unit (CMU) ï· U0156:00 VCM - Communication error with connectivity master unit (CMU) ï· U0156:00 BCM - Communication error with connectivity master unit (CMU) ï· U0198:00 BCM - Communication error with emergency call unit ï· U212D:00 BCM - Communication error with light control module (RH) ï· U3000:00 TCU - Telematics communication unit internal malfunction ï· Low Battery DTCs
Vehicles covered
- Mazda MAZDA3 2019-2020 20192020
- Mazda CX-30 2020 2020
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