2014 Toyota Highlander: Electrical System complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 36 owner complaints for the 2014 Toyota Highlander that list the electrical system component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11750492 (filed 07/15/2026): “The radio keeps freezing up all the time along with the back tail light area going in and out. i keep smelling like burnt wire smell. engine sound really rough.…”
- NHTSA complaint ODI #11735704 (filed 05/04/2026): “I noticed the smell of wires burning, a billow of smoke started emitting from the two levers used to heat the seats near the gear shift area. i was on the freeway and immediately pulled to the side of the road, turned off the car and called 911 before any flames were seen. there were no warning sign…”
- NHTSA complaint ODI #11715109 (filed 02/02/2026): “The contact owns a 2014 toyota highlander. the contact stated that a hybrid system warning alert was displayed. the vehicle was taken to an independent mechanic, where it was diagnosed and determined that the windshield wiring system had failed and that the windshield needed to be replaced. the vehi…”
Likely causes
These complaints do not establish a single root cause; read the examples above and get a diagnosis.
Fix, in plain English
No single fix is established by these reports. Check your VIN for open recalls at nhtsa.gov/recalls, ask a dealer about technical service bulletins (TSBs) or extended warranty coverage, then have the system diagnosed.
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
No sourced cost range for this issue. Get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
Page last updated .