Hyundai Accent (HC): Advanced Driver Assistance System (ADAS)

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Troubleshooting

Standard Flow of Diagnostic Troubleshooting Notes With Regard To Diagnosis The phenomena listed in the following table are not abnormal.ConditionExplanation System check soundWhen starting the engine, a thudding sound can sometimes be heard coming from inside the engine compartment. This is because the system operation check is being performed.