Mazda MAZDA3 2017–2018 — technical service bulletin

Official summary

Some customers who drive at elevations higher than 3,300 ft (1,000 m) may complain of a shift shock felt when shifting into 3rd, 5th and/or Reverse with no AT related DTCs stored. The symptom can be temporarily repaired using the AT initial learning procedure, but may recur after multiple driving cycles. Applicable situations: Shifting up: 2-3 or 4-5, Shifting down: 4-3 or 6-5, NOTE: Shifting from 2-3 or 4-3 is more likely to be felt due to the gear ratio. Shifting into Reverse: D-R, N-Ror P-R, Improper control logic of the TCM may cause improper learning of R-3-5 brake engaging speed when the

Vehicles covered

• 2017 Mazda MAZDA3
• 2018 Mazda MAZDA3