Hyundai Repair Questions? Ask a Mechanic for Answers ASAP
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The adaptive presets have to be relearned. That can be done with a scan tool, (that the dealership uses) or by normal driving. That happens a lot with them if the battery is disconnected. You can try going through a drive cycle and then it should idle normally.
THROTTLE BODY CLEANING NOTE: Disconnect the intake air hose from the throttle body, and check the throttle valve surface for dirt. Spray cleaning solvent on the lace of the valve to remove dirt.