When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I don't have a 2022 IS but for the 3IS (before the 3.5/4IS) its below the steering wheel (more so in the drivers footwell). A little more to the left, above the brake pedal.
Most cars tend to have their OBD ports below the steering wheel or in the drivers foot well.