Mazda CX-30 2019–2021 — technical service bulletin
Bulletin SA-066-20 · NHTSA communication 10180717 · issued Sep 14, 2020
Technical service bulletin
communication type
Electrical System
component
2019–2021
model years
7
vehicle entries
Official summary
When performing vehicle services such as control unit software update, control unit registration/activation, CMU log data retrieval, etc., always do the following: ï · Use the GR8 battery charger SST to maintain battery voltage. See SA-063/20. ï · Use M-MDS hardware that is in good working condition. CAUTION: If the GR8 is not used or if the M-MDS hardware is not in good working condition, a control unit failure may occur.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.