Dude, it's not you, it's us... Your knowledge and english are exceptionally good. You are in my opinion one of the most knowledgeable people, if not the leading expert on Discovery 2 electronics. So there's no way it's your IQ, as MJI said:
Oh sorry. Those switches are common 4.5Newton switches, i used to repair fobs for owners groups, done hundreds.
So if i can't fix them, new fob time.
They all in Europe use 433920hz of khz not sure which.
A radio scanner will pick it up.
Btw...
That's fixable - spray transfer welding & line boring, TBH I'd get new valves & seats at the same time, then you've got a good exchange head to use or sell. It's not scrap by any means.
This is an interesting counterpoint to the Canadian dude's video:
Personally? I don't have the infrastructure up here to go EV, nor is there any EV that makes me want to make the jump, but the way the noggies have smashed out the...
I had all 4 door cards off, did a window regulator on, ironically enough, front passenger door, fitted 4x vibe speakers in the 6.5" lower positions, and ran new wires from the back of the head unit to each door through the dash, up the pillar...
I've had the door cards off my D2 recently, and a few of the original clips separated from the doorcards, but were an absolute nightmare trying to refit them, in the end up I canned the fallen orignal clips, and fitted these blighters, well...