Mazda Motor Corporation has decided to conduct a Special Service Program (SSP) on certain 2014 CX-9 and 2015 MX-5 vehicles. On the affected vehicles, the strength of an internal part of the liftgate latch actuator or trunk lid latch actuator may be insufficient due to the usage of inappropriate material. With repeated lock-unlock operation, the internal part may be broken, making the lock-unlock operation impossible.In the worst case, though the trunk lid can be opened using the key, the liftgate or trunk lid may not be opened electrically (by operating switch, transmitter, etc.). Dealers are to replace the liftgate or trunk lid latch with a new, improved latch. This repair must be performed at no charge to the vehicle owner. SSP97 will be in effect until May 31, 2022, regardless of mileage.