Mazda CX-5 2018–2020 — technical service bulletin
Bulletin 05-002-20-3704a · NHTSA communication 10180598 · issued Sep 24, 2020
Technical service bulletin
communication type
Power Train
component
2018–2020
model years
4
vehicle entries
Official summary
Some customers may complain about a surging at low speeds and during acceleration. This surging is in the longitudinal direction, felt about 2 cycles per second, and occurs in the locked up 1st gear. This may be caused by the torque fluctuation and the torsional resonance in the torque converter. To correct this concern, the PCM software has been modified to reduce the torque fluctuation.
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.