What 61 owners told NHTSA about the 2017 Mazda CX-9

My vehicle has several issues related to a water pump failure in which the check engine light did not remain on. The vehicle began to over heat and slow down on the highway/ roads despite having my foot on the gas. My vehicle is now at Heritage Mazda Catonsville and unable to be read by the OBD reader which may be related to a weak wiring harness reported by other owners of the CX9. It also my be why my check engine light is not on despite having an engine issue. Many others have reported a failed water pump which caused cracks in the head which causes the car to over heat and slow down without notice. Despite having thousands of customers with this issue Mazda has yet to issue a recall.

NHTSA ODI 11509961

On several occasions, the system would activate the panic braking while driving at low speeds in a few different situations. One situation is while pulling into a 2 car garage with objects along the garage walls, i.e. shelves in front of vehicle, lawn equipment on the side, grill on opposite side. While entering the garage the system would engage well before the front of vehicle is close to the shelving. Another occasion happened in a parking lot while driving at low speeds with no other vehicles or objects near the vehicle.

NHTSA ODI 11461594