More likely just electric power steering. When it was a new thing i encountered many people who assumed, or were even told by misinformed dealers, that meant 'drive by wire' with no mechanical connection, when all it really means is the assistance is provided by an electric actuator rather than hydraulic. I remember over a decade ago a mate's dad was convinced his new Corsa had no mechanical steering connection when it would have just been EPS. Or possibly even more basic hybrid electric where it's still a hydraulic system but the pump is driven by an electric motor rather than a belt from the engine. Same with this Passat I'm sure.