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hill descent control

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What Does the Hill Descent Control Warning Light Mean?
The hill descent control light turns on when the system is activated and helps you maintain a specific speed while driving down a hill.

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Question
On the Downhill Assist Control system, is it supposed to be noisy while in use? 2011 Kia Sorrento
Hello - the Downhill Assist Control (DAC) uses engine compression (without ignition) to provide "braking" without heating up the brakes on a long descent. This makes a somewhat "unnatural" sound much like you describe from the exhaust. It is not...

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