Mazda MAZDA6 2014–2020 — technical service bulletin
Bulletin 04-006-19-3643 · NHTSA communication 10168068 · issued Nov 4, 2019
Technical service bulletin
communication type
Service Brakes, Hydraulic
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 may be caused by a brake torque variation at that speed due to an inappropriate machining process of the brake disc surface.
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.