Check your terminal before departing; Terminals 2 and 3 share a station

https://www.scribd.com/document/1074904087/Private-Hire-and-Ride-Hailing-to-Heathrow-What-to-Know-Before-You-Book-216958

Check your terminal before departing; Terminals 2 and 3 share a station, while Terminals 4 and 5 have their own dedicated rail stops on the tube and Elizabeth line.