2023 Hyundai Tucson: Electrical System complaints
Owner-reported issue (NHTSA complaints, not a recall)
Symptoms
NHTSA has 37 owner complaints for the 2023 Hyundai Tucson that list the electrical system component. Complaints are individual owner reports, not verified defects.
Examples:
- NHTSA complaint ODI #11755583 (filed 08/07/2026): “Under hyundai recall 290, the dealership permanently removed the functional trailer light wiring harness and replaced it with a nonfunctional rubber dust cap. a hyundai case manager informed me that a replacement harness is "in development," but official nhtsa remedy filings show the cap is the fina…”
- NHTSA complaint ODI #11752416 (filed 07/23/2026): “The vehicle developed an intermittent but potentially dangerous engine control malfunction. after the engine reached normal operating temperature, the engine speed (rpm) would repeatedly surge while the vehicle was stopped in park and neutral, fluctuating from approximately 1,000 rpm to over 3,000 r…”
- NHTSA complaint ODI #11748996 (filed 07/08/2026): “The contact's son owns a 2023 hyundai tucson. the contact stated that while driving at various speeds, various warning lights illuminated, and various messages were displayed on the instrument panel; however, the warning lights disappeared upon restarting the engine. the contact stated that her son …”
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
- NHTSA complaints API: TUCSON 2023
- NHTSA complaints API: TUCSON HYBRID 2023
- NHTSA complaints API: TUCSON PHEV 2023
Page last updated .