Hyundai Sonata and XG300 - 350 over Subframe Rust Issues

Hyundai said that the recall concerns vehicles originally sold or currently registered in the so-called "salt belt" or "snowy" northern states of the U.S. due to the large quantities of salt used to de-ice roads. According to the Korean automaker, the road salt may result in a progressive corrosion of the front sub-frame leading to the thinning or perforation of the sub-frame steel.

As was the case with the previously recalled MY1999-2002 Sonatas, Hyundai dealers will check out the thickness of the front sub-frame and inspect for corrosion damage. If there's a serious problem, the front sub-frame will be replaced with a new sub-frame incorporating additional holes in the upper and lower panels.

Hyundai said that if the front sub-frame does not require replacement, the dealer will add drainage holes to the sub-frame and will treat the sub-frame with rust-proofing material to arrest the corrosion process.