In 2015 & '17, they recalled more than 1 million Sonatas and Santa Fe Sports to replace engines in '11 & '12 Sonatas and '13 & '14 Sonatas & Santa Fe Sports. There were machining problems when the manufacturer assembled the engines. It caused metal debris to clog oil passages of the crankshafts, more specifically the bearings & rods. Then they found more problems with the crankpins also from being manufactured wrong, with uneven surfaces. Result, restricted oil flow to the connecting rod bearings that wore out prematurely and caused "rod knocking". Symptoms reported; rods (engine) knocking, oil warning light, MIL/check engine light, engine stalling, and/or seized engines. I believe there were Kia models effected too, engines of the same displacement and model years.
If you think there is a recall on your Hyundai, your best bet is to got directly to the Hyundai website. I had a Santa Fe that had a couple of recalls, and received written notification directly from them, not a dealer. If your Hyundai is listed as having a recall notice, you can take it to any Hyundai dealer to have it repaired. In the case of my Santa Fe, I had had the repair work done before a recall was issued. I submitted proof of repair to Hyundai once the recall was issued, they sent me full reimbursement.
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