2014 Ford Expedition: Rear differential fills with water
Common wear/failure (not a recall)
Symptoms
Owners of the 2014 Expedition report: rear differential fills with water. CarComplaints.com lists 2 owner complaints, average mileage 65,500 miles.
NHTSA has 34 owner complaints for the 2014 Expedition in this area. Examples:
- NHTSA complaint ODI #11747325 (filed 06/30/2026): “I bought this 2014 ford expedition. i didn't know at the time the triton 5.4 had a transmission lead frame defect. i asked them to cover it under nhtsa 26v237 but they refused because they dsaid it wasn't part of the recall although this vehicle shares the sam…”
- NHTSA complaint ODI #11733946 (filed 04/27/2026): “While driving on interstate at highway speeds (70mph), the transmission experienced sudden downshift, which increased the engine rpms to redline and rapidly decelerated the vehicle. occupant safety was put at risk while other drivers were forced to quickly avo…”
Likely causes
Sources do not establish a single root cause; diagnosis is needed. Owner-reported fixes are listed below.
Fix, in plain English
Most common owner-reported solutions on CarComplaints.com: none clearly reported. Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Pro
Differential/driveline noise diagnosis and gear work need a lift and specialty setup tools. (Our assessment.)
Cost
CarComplaints.com owners report a typical repair cost of about $1,450 (owner-reported average, not a quote).
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
- CarComplaints.com: Rear differential fills with water (2014 Expedition)
- NHTSA complaints API, 2014 Expedition
Page last updated .