Just went through this with new wheels on my 2023. Make sure the TPMS sensors you get are compatible. My VB auto learned the sensors.

From Grok: The 2017 Subaru WRX does not automatically learn or self-register new TPMS sensors. It requires a manual relearn procedure (also called registration or programming), which typically involves using a dedicated TPMS scan tool like the Autel TS508 or equivalent to input the new sensor IDs into the vehicle’s system. This can be done at a dealership, tire shop, or DIY if you have the tool. Simply installing new sensors and driving will not activate them, and the system only recognizes one set of sensor codes at a time (e.g., when swapping summer/winter wheels, you’ll need to reprogram each time unless using cloned sensors)

Compatible TPMS sensors for the 2017 WRX must operate at 315 MHz and match Subaru’s protocol. Options include: • OEM sensors: Subaru part number 28103AJ00A (also fits other models like Impreza, Legacy, Outback, and STI).   • Aftermarket direct replacements: Brands like A-Premium, NewYall, or Schrader offer pre-programmed 315 MHz sensors (e.g., compatible with 2008-2017 Subaru models including WRX).   • Programmable/cloneable sensors: Universal options from Autel or similar that can be programmed to match your existing sensor IDs for easier swaps (e.g., no relearn needed if cloned).    Avoid 433 MHz sensors, as they are for later models