Need help identifying a dangling wire on the right rear

Hello, new L322 owner here. What is this wire? I'm not quite sure what to make of this. It's dangling dangerously next to the wheel on the rear right. On one end (to the left in this photo), it is connected and tucked under the subframe along with with the TPMS initiator/transmitter wiring. On the other end, it routes through the subframe and possibly to the wheel hub, based on the look of the wire insulation. I cannot trace it to confirm because it tucks through the subframe. I will continue looking through manuals and diagrams unless someone could hapily help identify..

I have a flashing PARK light on the dash indicating a parking brake fault and hope this is related. I dont have a scanner ready yet to diag (brand new owner).


It amazes me that the dealer service record for this car says that the brake and tire system was checked only approximately 5000 miles ago, yet the TPMS initiator and this wire (to be determined) on the right rear is just dangling out in the open. Very sloppy work. I ordered some scrivets to properly mount the initiator.