Okay, so update time; I've soldered the two broken points, and from what I can tell from my amateur testing with a multimeter the fob is still working but the car no longer responds to it, & standard reset procedures no longer work. I left my SDR dongle at home so I can't check to confirm that t...

Posting update - may in fact be the keyfob, found a couple of solderpoints on it that under closer examination are possibly cracked, so I'm gonna fetch my soldering kit and give it a go.

Hi, random amateur newbie in a desperate situation here :) I've been having problems for a while with my fob losing sync; up till now I've been able to resync it with reliable success for the best part, but now the resync process isn't working. When it's done this in the past, I've sprayed WD40 down...