PW 2015: Petrol filter /sensor + tank sensor + horn

[birchit]

Hi together,

some questions to you which could solve my problems with my PW 2015 6.4L:

1. Is it right that the PW 2015 6.4L has only a petrol filter directly on the pump, which is mounted in the tank?
2. Does it also have a petrol pressure sensor? Where is it located, because I can't find any informations in the shop manual
3. As well as for the winshield washer fluid level sensor? I can't find it either...because it sends a signal to the ECU that the water level is low, although the tank is filled up completely
4. Does anyone had in the past problems with these sensors and which type are these sensors? Part number?
5. My horn cries like a gummi duck, because it seems that the lower is not working - how can that be fixed. Location is under the left front fender, correct?

Thanks to all and stay healthy!

Birchit