What's the 2011 Hyundai Sonata transmission filter location?

The transmission filter on the 2011 Hyundai Sonata is physically located inside the transmission assembly itself, and there's no easy way to service this without physically removing the tranny. Even though it's not accessible to You, it should be replaced every 30,000 to 50,000 miles. Usually, You can get a transmission fluid change and filter change for as little as $150 at a local Hyundai dealership. Depending on how d***y Your transmission fluid is, You can go with a flush instead of a full transmission fluid change, but either way, You'll want to get the filter swapped out.