{"count":1,"message":"Results returned successfully","results":[{"odiNumber":11741031,"manufacturer":"Hyundai Motor America","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"12/01/2025","dateComplaintFiled":"05/30/2026","vin":"5NMS2CAD2KH","components":"POWER TRAIN","summary":"In December 2025, a Hyundai dealer performed Service Campaign 9C2 (TSB 25-01-087H), an ECU software update for the 2.4L GDI Theta II engine, during a routine annual NY state emissions inspection. Immediately following this update, the vehicle began exhibiting an RPM flare of approximately 1,200-1,500 RPM during upshifting under light acceleration. This behavior did not exist prior to the update. The condition occurs when ambient temperature is above 50\u00b0F and the vehicle has been parked 2+ hours after a prior drive. No warning lamps or fault codes have been present at any point. The issue has been confirmed across four dealer visits at two Hyundai dealerships over five months. Attempted remedies included transmission ECU updates and adaptive resets \u2014 none resolved the condition. On the fourth visit, the technician personally experienced the issue and identified reinstalling the pre-update ECU calibration as the likely fix, but stated the prior software version was unavailable. The repair order was nonetheless closed as \"vehicle operating as designed.\" The case has been escalated to Hyundai Motor America National Consumer Affairs and forwarded to Hyundai engineering with no resolution to date. Multiple other 2019-2020 Santa Fe owners report identical post-9C2 symptoms on public forums, indicating a pattern associated with this campaign's ECU calibration. The unexpected RPM surge and erratic shifting during acceleration creates an unpredictable driving experience that could cause hesitation in traffic situations requiring smooth acceleration.","products":[{"type":"Vehicle","productYear":"2019","productMake":"HYUNDAI","productModel":"SANTA FE","manufacturer":"Hyundai Motor America"}]}]}