Diagnosing Faulty Rear Blinds

[chrisc201]

Hi folks,

Recently bought a D3 A8 that has electric blinds on the back doors but both are entirely unresponsive... Read that pulling and holding the window switch for the door also activates them and again unresponsive so not sure if this implies a motor issue rather than switch?

Any advice on how to diagnose would be appreciated, clearly not a must have item but working my way through a few issues and would like to get everything working.

Cheers,
Chris