Aisin World Corp. of America (Aisin AW) is recalling certain Transmission Control Modules (TCM), part numbers PSPD189E1, PEFB189E1B, PAC6189E1A, PEFB189E1A, PEFB189E1C, 50052911, PEFB189E1D, 50053305, and 50054938 sold for use in 2016-2019 Mazda Miata MX-5 and 2017-2019 Fiat 124 vehicles equipped with automatic transmissions. Due to incorrect programming of the Transmission Control Module (TCM), certain conditions may cause the vehicle to unexpectedly downshift and abruptly decelerate.
If a vehicle downshifts unexpectedly, the driver may lose control of the vehicle, increasing the risk of crash.
Remedy program(s) will be conducted by both Mazda and FCA US. For additional information, see recalls 19V-068 and 19V-072.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.