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October 28, 2019 Service bulletin

Hyundai has developed a new engine monitoring technology called a Knock Sensor Detection System (KSDS)....

Hyundai technical service bulletin Campaign 953 Dea for 2011-2019 Hyundai Sonata, 2019 Hyundai Santa Fe and 2014-2015, 2018-2019 Hyundai Tucson and others.

Bulletin number
Campaign 953 Dea
Component
Engine and engine cooling
Summary
Hyundai has developed a new engine monitoring technology called a Knock Sensor Detection System (KSDS). The technology uses software innovations and leverages existing engine sensors to continuously monitor for symptoms that may precede an engine failure.

Owners of these vehicles have filed 6,077 complaints in the engine category.

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