Where exactly are the boarding locations for the SeaTac Rental Car Facility shuttle buses, and how do I find the correct loop for my rental company?

Navigating from the Seattle-Tacoma International Airport (SEA) terminal to the consolidated Rental Car Facility requires boarding a complimentary, 24/7 shuttle bus. Unlike a single centralized stop, the system utilizes two distinct, color-coded loops to efficiently manage the high volume of travelers. The primary navigation landmark is the Baggage Claim level. For the South Loop, which services Advantage, Alamo, Avis, Budget, Dollar, Enterprise, Hertz, National, Payless, Sixt, and Thrifty, passengers must locate Baggage Carousel #1. Immediately adjacent to this carousel, look for the designated glass doors leading to the outer curb. Clear overhead signage and floor decals will direct you to the South Loop pickup zone. For the North Loop, servicing Fox Rent A Car, locate Baggage Carousel #15. Exit through the glass doors directly across from this carousel. The buses arrive approximately every 5 to 10 minutes, and the ride to the facility at 3150 S 160th Street takes roughly 5 minutes once departing the terminal. Do not attempt to walk, as pedestrian access is restricted on the airport roadways. The dedicated loops ensure that no rental company stop is missed, and the digital displays inside the buses announce the upcoming arrival at the 2. 1-million-square-foot facility.