I don't understand the vias. are those the many holes on the PCB?
The vehicle is a 2005, so manufacture of this board is probably 2004/5, if the 80s was reference to a year.
I don't want to take the board itself apart, I was thinking of taking the board off the rest of the module and cleaning its other side if needed. The board is attached with pins under the white "connector" at the top. Wasn't sure if I could just carefully pull it up and off.
I also wasn't sure the purpose of the two rows of prongs at the bottom. Seem to be too many for alignment, and if conducting something, it seems kind of crude as they are not all that straight.