’03 BMW E46 320d (M47 204-D4) DSC problems

So I was driving this morning, when suddenly both the DSC light and handbrake light turn on yellow, I started feeling the rear end losing traction on a roundabout, so apparently TC and DSC just died on me.
I pulled over, turned the car off, waited a few minutes, and turned it back on, and the light was no longer there and I had those assists working correctly.

I know some of the ground connections are completely fried, considering the headlights do whatever they want and sometimes both don’t work at the same time, but honestly I do not know where to start with this one. Anyone have any idea what’s going on, or what I should look for?

Some car specs:
Engine: 2.0L i4 M47 204-D4 turbodiesel (euro spec, no diesel particle filter)
Trans.: 6-speed manual
Kilometres: Well over 250.000km

UPDATE: Found a snapped wire coming from somewhere around the brake servo and going somewhere on the bumper support, I’ll try to post pictures when I have some time.

UPDATE 2: Turns out that wire is a temperature sensor used by the A/C.