Mazda MAZDA6 2017–2020 — technical service bulletin
Bulletin 05-001-20-3699 · NHTSA communication 10176968 · issued Jun 4, 2020
Technical service bulletin
communication type
Power Train
component
2017–2020
model years
4
vehicle entries
Official summary
Some customers may complain of a shift shock felt when shifting into 3rd, 5th and/or R range with no A/T related DTC stored. The symptom can be temporarily repaired by A/T initial learning procedure, but may recur after multiple driving cycles. Applicable situations: ï · Shifting up: 2-3, (4-5) ï · Shifting down: 4-3, (6-5) NOTE:(4-5) and (6-5) are felt more than others due to the gear ratio. ï · Shifting into R: D-R, N-R, P-R. Improper control logic of the TCM may cause improper learning of R-3-5 brake engaging speed during certain driving situations. To correct this concern, the con
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.