As no one else responded, I'll add my 2½ cents.
I pulled this off a related website:
Common Transmission Issues
● Flexplate Cracks & Torque Converter Failure: Ford issued a Customer Satisfaction Program (22N12) for certain 2015–2018 models with the 2.0L EcoBoost engine and 6F35 transmission.
This program covers repairs for cracked flexplates, transmission fluid pumps, and torque converters, which can cause rattling noises and eventual failure.
● Shifter Cable Bushing Recall: A significant recall (22S43) affected 2015–2018 Edges because the shifter cable bushing could degrade, potentially causing the vehicle to be in a different gear than the one indicated by the shifter.
● Torque Converter Weld Studs: A smaller recall affected some 2017–2018 models with 2.0L gas engines where inadequate welds on torque converter studs could lead to a complete loss of drive.
● Cooler Bypass Valve Clogging: Some mechanics identify a clogged cooler bypass valve as a major cause of transmission overheating and failure in the 2018 model year.
Reported Symptoms
Owners have frequently reported the following symptoms before experiencing major failures:
● Rough Shifting: Hesitation, jerking, or "bucking" particularly at low speeds.
● Slipping: Momentary increases in RPMs without a corresponding increase in speed, often noticed around 60 mph.
●Unusual Noises: Clunking or rattling sounds coming from the transmission area.
Maintenance Recommendations
While the owner's manual may suggest long intervals, many technicians and experienced owners recommend more frequent service to extend the life of the 2018 Edge's transmission:
● Fluid Changes: Aim for transmission fluid inspections and changes every 30,000 to 60,000 miles.
● Address Shudders Early: If you notice a "shudder" or "jerk" at low speeds, a software calibration update or a fluid flush may resolve it before permanent damage occurs.
● Verify Recalls: Check your VIN on the Ford Support Recall Page to see if your specific vehicle is covered by the flexplate or shifter bushing programs.