Does the green s light on a 2004 land rover discovery belong on at all times?

In a 2004 Land Rover Discovery, the green "s" light typically indicates that the vehicle is in Sport mode. It should only be illuminated when Sport mode is actively engaged. If the light remains on at all times without the driver selecting this mode, it could indicate a malfunction in the vehicle's transmission system or electronic controls, and it would be advisable to have the vehicle checked by a professional.