{"count":1,"message":"Results returned successfully","results":[{"odiNumber":11751838,"manufacturer":"Hyundai Motor America","crash":false,"fire":false,"numberOfInjuries":0,"numberOfDeaths":0,"dateOfIncident":"06/11/2026","dateComplaintFiled":"07/21/2026","vin":"5XYZU3LBXHG","components":"ENGINE,FUEL/PROPULSION SYSTEM","summary":"I own a 2017 Hyundai Santa Fe Sport 2.4L (VIN: [XXX]).  On XXX, my vehicle received Campaign 9C2 (ECU software update for Theta II emissions improvement). Shortly after this update, I began experiencing a drivability issue that did not exist beforehand.  Description of the issue:  The problem occurs only after the vehicle has been sitting long enough for the engine to become completely cold, typically overnight.  During approximately the first 1/4 mile of driving, the vehicle intermittently jumps, surges, or lurches while accelerating normally.  Once the engine warms up, the symptom completely disappears and the vehicle drives normally for the remainder of the trip.  There are no warning lights, no check engine light, and no diagnostic messages.  The Hyundai dealer has had the vehicle for nearly a week but has been unable to reproduce the concern. Because the issue only occurs during the initial cold start and first portion of the drive, I am concerned that it may not have been tested under the same conditions in which I consistently experience the problem.  I am not claiming that Campaign 9C2 caused the issue, but the timing is notable because the symptom began only after the ECU update was performed. I am requesting Hyundai's assistance in determining whether:  - the ECU update was installed correctly, - any required adaptation or relearn procedure is incomplete, - there are any related Technical Service Bulletins or software updates, or - additional diagnostics should be performed during a true cold-start drive with live data recording. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)","products":[{"type":"Vehicle","productYear":"2017","productMake":"HYUNDAI","productModel":"SANTA FE","manufacturer":"Hyundai Motor America"}]}]}