Mazda MAZDA6 2014–2020 — technical service bulletin
Bulletin 04-002-20-3643b · NHTSA communication 10182092 · issued Oct 26, 2020
Technical service bulletin
communication type
Service Brakes
component
2014–2020
model years
7
vehicle entries
Official summary
Some vehicles may exhibit a groan noise from the front brakes when braking at a very low speed (approximately 6 mph/10 km/h). This is caused by a brake torque variation due to an uneven coating of the brake pad friction material forming on the surface of the disc plate. To eliminate this concern, the surface processing on the disc plate has been changed.
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.