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

https://www.scribd.com/document/1074894734/Heathrow-Drop-Off-Charges-and-Pick-Up-Locations-Avoid-Fines-and-Hassles-212266

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.