Mazda CX-30 2019–2020 — technical service bulletin
Bulletin SA-046-19 · NHTSA communication 10168115 · issued Nov 5, 2019
Technical service bulletin
communication type
Electrical System
component
2019–2020
model years
7
vehicle entries
Official summary
On the 2019 Mazda3 (BP) and and all 2020 Mazda vehicles (except CX-3), the CR2032 button cell battery is required for the new type remote transmitter. If it is mistakenly replaced with the conventional CR2025 used in the previous type remote transmitter, it may cause a malfunction. Verify the button cell battery type before replacing it.
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.