Unable to hear audio sounds anymore

Enigne knock only after cold start and only when driving not on neutral and only above 1500 rpm. There were some metal flakes in the oil filter but not much. Suspects are oil pump aș cause and bearings as effect. Someone suggested injectors. Car has 250 000 km. Distribution has just been replaced together with rocker cover, engine mounts , and various gaskets and o-rings.

Although all minor, these are the things that are bothering me, if anyone can help, great, if not, i haven't lost anything.

DAB radio, loses signal, quite often, very annoying. ?replace antener?

Rear washer jet dont work. No sign of any water coming out the pipe. Cant hear any noise from the rear pump. Could be a simple fuse, blockage or dodgy pump?

If i get a flat tire for whatever reason, I'm told i have to replace all 4 tires because it is X-Drive. That true?

Thats all i can think of at the moment.

Water does not spray in rear wiper. Apparently pump works or st least makes noise similar
Than working

Fan sounds really load , no power , sluggish,, computer says engine overheating

My trunk makes the sound that I activated the foot sensor under the car (I didnt activate it and I dont know where the sensor is if anything is obstructing it) and the trunk closes half way. This happens almost everytime I try to open my trunk everyway the trunk opens, via key, trunk button, interior button, and through the car system.