Button mappings are reset on every start of the game.
PS5,
Thrustmaster T300RS and Spraco R383 Wheel
Was fixed in V1.4
- Fixed an issue that caused certain input devices to require recalibration after the game has been rebooted.
https://answers.ea.com/t5/Updates/EA-SPORTS-WRC-Version-1-4-0-Patch-Notes/m-p/13293875#M6
Broken again in 1.5