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The 2009 Hyundai Sonata requires fully synthetic automatic transmission fluid. Some recommended fluids include Dexron VI ATF and ATF SP III by AISIN. If your transmission fluid or filter becomes clogged, you might notice the engine revving without acceleration, which is known as transmission slipping. If you observe this issue, it's crucial to promptly bring your car in for maintenance to prevent further damage. Changing the transmission fluid is part of routine maintenance and should be done regularly to safeguard the transmission. The typical cost for a transmission fluid change on a Hyundai Sonata ranges from $110 to $160, encompassing labor and fluid expenses.
The 2009 Hyundai Sonata requires six quarts of fully synthetic automatic transmission fluid.