2020 Ford F-150: Wires chewed by rodents
Common wear/failure (not a recall)
Symptoms
Owners of the 2020 F-150 report: wires chewed by rodents. CarComplaints.com lists 5 owner complaints, average mileage 19,850 miles.
NHTSA has 71 owner complaints for the 2020 F-150 in this area. Examples:
- NHTSA complaint ODI #11769297 (filed 10/06/2026): “It had been raining hard for a few days. husband was taking truck down hwy 98 to a drs appointment an hour away. driving 50 when the steering wheel starting going in and out, the seat started moving forward and back, running boards going in and out, lights fla…”
- NHTSA complaint ODI #11769377 (filed 10/06/2026): “I have noticed that my turn signal lights work sometimes, and sometimes they give me the rapid-fire warning light indicating that one of them is out (front or back). the outage may or may not last the entire duration of when the turn signal is deployed - some…”
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: new harness wiring for fuel injectors (2 reports) had knock sensor replaced (1 reports). Check for open recalls and extended warranty coverage with a dealer before paying out of pocket.
DIY difficulty: Moderate
Finding and splicing chewed wiring is doable with a multimeter and patience but can be time-consuming; harness replacement is pro work. (Our assessment.)
Cost
CarComplaints.com owners report a typical repair cost of about $970 (owner-reported average, not a quote).
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto