Intermitant Brake Light and Fuel Gauge Failure while DTSC engaged 2004 Volvo V70 2.5T AWD

[VolvoFaucho]

Hey everyone,
First time posting here. Been following for a while but never got around to making an account. Thought that now I'm starting to face weird issues with my trusty old V70 that I would reach out to everyone for some ideas and expert volvo advice!

I have been fighting an weird gremlin type issue the past week with my 2004 V70 2.5T AWD (318000kms).
Here's my problem:

I live in Canada where the temperature the past week has been consistent snow, flurries and an average temp of -12C. I would turn on my car and let it warm up for about 5mins. The real issue starts when I'm driving. Sometimes when the anti-skid activates, whether I am sliding through turns or just regular wheel spin after a stop, my fuel gauge drops to empty and I lose my brake lights. The rear lower running lights, turn signals, and reverse lights still work, but my top brake lights and third brake light in the spoiler don't work.
I have already checked all my fuses, the brake light shunts and relays. This issue is intermittent and comes and goes. No error codes on the dash. In my 2004 model, I do not have the button to disable the DTSC on my center console (unfortunately). Everything will return to normal after a couple minutes of driving. Any Ideas anyone? Thanks for all the help!

[Hamburger]

First thought - bad ground connection

Sounds like the ABS Pump kicks in, its ground or any ground near is in bad condition and pulls voltage down so gauge or else stops working.

[VolvoFaucho]

Thanks for the suggestion!!. I checked my grounds and all is good. After doing even more digging I've come across a lot of info regarding the possibility of REM failure. Mainly the shunts and fuses. It's the next thing to check. Keep you posted!