Some customers may experience a "IN-VEHICLE NETWORK MALFUNCTION" warning message in the instrument cluster...
Mazda technical service bulletin SA-029-20 for 2019-2020 Mazda MAZDA3 and 2020 Mazda CX-30.
- Bulletin number
- SA-029-20
- Component
- Electrical system
- 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: B119F:01 TCU - Tel antenna No. 1 malfunction B1252:87 TCU - Communication error with connectivity master unit (CMU) U0156:00 VCM - Communication error with connectivity master unit (CMU) U0156:00 BCM - Communication error with connectivity master unit (CMU) U0198:00 BCM - Communication error with emergency call unit U212D:00 BCM - Communication error with light control module (RH) U3000:00 TCU - Telematics communication unit internal malfunction
Owners of these vehicles have filed 19 complaints in the electrical category.
Vehicles covered
- Mazda MAZDA3 2019-2020 20192020
- Mazda CX-30 2020 2020
VIN decoder
See the problems and recalls for an exact car
Buying a used Mazda MAZDA3?
Check the exact car before you pay: accidents, salvage or flood titles, odometer readings and previous owners.
Check its history