In order for the PS button on your Driving Force Wireless to function in your PlayStation 3 games, the game must support the PS button.

Earlier versions of the Driving Force wheel did not have the PS button, so games written prior to the PS button’s introduction may not support it.

You may be able to add support for the PS button by updating your game to the latest version. Make sure your PlayStation 3 is connected to the PlayStation Network (PSN) when you are playing a game with your Driving Force Wireless so that it can perform any online updates necessary.