The # C44FR does in fact require the factory (OEM) tow package for installation on your 2023 Lyriq. We could do a better job calling this out beyond our notes for installation on the product page which say it "plugs into your vehicle's factory tow package wiring harness." I went ahead and requested this addition to the trailer wiring page. I wasn't able to find your order so if you already purchased this somewhere else I would return it.
The only other option would be to add a universal... view full answer...