2018 Ford F-250 Super Duty: Missing transmission wiring harness
Common wear/failure (not a recall)
Symptoms
Owners of the 2018 F-250 Super Duty report: missing transmission wiring harness. CarComplaints.com lists 1 owner complaints, average mileage 6,000 miles.
NHTSA has 16 owner complaints for the 2018 F-250 Super Duty in this area. Examples:
- NHTSA complaint ODI #11662007 (filed 05/19/2025): “Transmission just went out no tell tale signs or anything.…”
- NHTSA complaint ODI #11572696 (filed 02/19/2024): “I was driving down the highway when the truck started shaking vigorously i could not control it. i went into another lane as i could finally push the break hard enough to stop. i checked for a recall. there is a recall for the radial damper, but my vin number…”
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
Diagnosis needs a scan tool; repair or replacement needs a lift, transmission jack and the manufacturer's fluid fill/relearn procedure. (Our assessment.)
Cost
CarComplaints.com owners report a typical repair cost of about $1,400 (owner-reported average, not a quote).
Typical parts (search links, no affiliate codes)
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