Audi Q7 Rear wiper/open up button not working

[ber5ien]

can anybody share any wiring diagram so I can see if these are connected? 

checked the fuses in rear luggage and under the steering wheel (the hidden wiper motor fuse)

all good.

I can still open up rear trunk with remote or using drive door button.

Rear wiper are not working (same if try to use the spray function) (can here noise) but no water on the rear windows.

The button which opens up trunks is not working.

[Magnet]

Possibly the water you can hear when you press the rear washer button is soaking the motor and associated bits.
Have you had the panel off to check?  

[ber5ien]

Rear trunk button that was blocked in MMI. 
 

I can’t see any water coming out from plastic. 
 

I will have a look thanks