Geheee

Hello, Wonder if you could help? There's been a lot of useful information on here since I purchased my Superb.... Recently my rear parking sensors have died. Completely not working. No visuals on the display when selecting reverse, no warning sounds or otherwise, no beeps..... I did find a thread here: https://www.briskoda.net/forums/topic/442815-how-to-change-a-faulty-rear-parking-sensor/ Which advises to listen at the back of the four sensors. In this instance however, all 4 sensors are ticking! So I'm not sure if I have necessarily the same issue with a single broken sensor. It's almost as if the function has been disabled/switched off. Is there a button or menu for this that I may have inadvertantly pressed? Otherwise is there anything else I can check? Unfortuantely I don't have access to the code scanner/computer debug.... Thanks anyway for your help!