First, let me welcome you to the forum and the AF family.
Second, while I am no Hyundai Tech person I took the liberty of checking Hyundai
Webtech and the only thing I see is a rattle or creak noise heard inside the vehicle coming from the door hinge area (any four doors) Are you sure its coming from the rear brakes or can it be from the rear door? If it is then check out tsb #
00-60-003-1 on webtech. If its not the door hinge then maybe a Hyundai Tech member in the forum can possibly think of something else.
TS out
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