NHTSA Complaint #11516647 — 2012 HYUNDAI SANTA FE

In June 2021 vehicle experienced engine failure at approximately 152,000 miles. Vin# not under Hyundai Engine recall however Hyundai covered new engine replacement under warranty extension due to failure. In November 2022 received notice for mandatory Knock Engine Sensor Detection Campaign, vehicle had approximately 163,000 miles. Was told this must be performed to prevent catostrophic engine failure. Once campaign was installed in December 202 vehicle immediately went into Drive Safe mode and Engine light came on. Returned to dealership 2 more times and each time vehicle went into Drive Safe mode with engine light. Diagnosis was the new engine was defective and needed to be replaced. New engine has under 12,000 miles. Vehichle is now unsafe to drive as it's in Drive Safe mode and needs engine replacement. Hyundai only agreed to cover 85% of the new engine cost as a goodwill. This is not satisfactory to the customer as a brand new engine, under 12,000 miles and 14 months failed and I do not feel I should be responsible for 15% of the cost to replace a defective engine. The fact that the engine light came on and vehicle went into Drive Safe mode immediately following the KSDS campaign installation means there was an existing defect in the engine that was only detected once the campaign was installed.