The 2020 Ford Edge uses Ford's 8F35 8-speed automatic transmission. Some owners experience shuddering, particularly during light acceleration between 25-50 mph. This symptom has affected many Ford vehicles with this transmission, and understanding the cause helps determine the proper fix.
Torque Converter Shudder Explained
The most common shudder complaint relates to the torque converter clutch (TCC). The converter locks up during light-throttle cruising for fuel efficiency. When the clutch plates engage, they should lock smoothly. However, if the plates slip slightly instead of engaging cleanly, vibration results.
This shudder typically occurs in the 35-50 mph range during steady-speed driving or light acceleration. It feels like driving over a rough road or rumble strips. The sensation usually disappears under hard acceleration when the converter unlocks.
P0700 and Related Codes
If P0700 accompanies shuddering, the transmission module has stored additional codes. P0700 is simply a flag saying "check transmission codes." A professional scan tool reading manufacturer-specific codes identifies whether the shudder has triggered related fault codes like TCC slip or pressure regulation faults.
Ford's Response
Ford has acknowledged torque converter shudder in vehicles with the 8F35 transmission. Technical service bulletins address the issue, typically calling for transmission fluid replacement with updated Mercon ULV fluid and, in some cases, torque converter replacement. Check with your dealer about applicable bulletins and warranty coverage.
Some affected vehicles fall under Ford's Customer Satisfaction Program, which extends warranty coverage for specific issues. Even if outside normal warranty, your vehicle may qualify for reduced-cost or no-cost repair.
Fluid Service as First Step
Fresh Mercon ULV fluid with proper friction modifiers often resolves mild shudder. Ford's updated fluid formulation addresses the clutch engagement characteristics. A complete fluid exchange (not just a drain and fill) replaces more fluid and often yields better results. Multiple services may be needed for stubborn cases.
When Torque Converter Replacement Is Needed
If fluid changes don't resolve shuddering, the torque converter clutch plates may have worn surfaces from repeated slipping. In these cases, torque converter replacement is necessary. This is a significant repair but covered under applicable TSBs or warranty extensions.