02 [002] Driver's belt tensioner, resistance too high

[Bmwe5320023.0]

Purchased used seats and getting this error.
I tried cleaning the contacts really well, but that didn't help.
Disconnecting/reconnecting the cable just creates/removes another error:

70 [112] Seat occupancy detector, connection to B+
I haven't figured out what wires i touched to make it go away and come back Thinking about coding it out or buying a bypass on ebay.

Back to belt tensioner. I have a few spares laying around, so I tried replacing the 2 wire harness with 2 different ones like this, part number 52108255704


So right now I figure the only piece left to replace is the whole buckle thing, it got another connector that cannot be disconnected



Anyone found a different solution or fixed the problem this same? All the post I read recommend replacing just the wire, nobody mentions replacing the whole buckle assembly