2025 Hyundai Tucson: Engine control system
Common wear/failure (not a recall)
Symptoms
Owners of the 2025 Tucson report: engine control system. CarComplaints.com lists 1 owner complaints, average mileage 1,000 miles.
NHTSA has 123 owner complaints for the 2025 Tucson in this area. Examples:
- NHTSA complaint ODI #11773073 (filed 10/22/2026): “When shifting into reserve, a green screen appears. i have to put my car back in to park and then reverse to get my back up camera to start working again. it doesn’t happen all the time but since my last software update, it has been happening more frequently.…”
- NHTSA complaint ODI #11769898 (filed 10/08/2026): “The contact owns a 2025 hyundai tucson. the contact stated that while depressing the horn pad on the steering wheel, the horn failed to operate as intended. the vehicle was taken to a local dealer, where it was diagnosed and confirmed that the failure was rela…”
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: replace the motor controller (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
No sourced cost range: get a written quote after diagnosis.
Typical parts (search links, no affiliate codes)
AutoZone · O'Reilly · Advance · RockAuto
Sources
Page last updated .