I just replaced the dashboard in my 2007 TL and am seeing these codes flash (one after the other) on the MID:
b2207 97
b2208 97
b2204 97
b2209 97

I thought maybe I had missed a connector some place but haven't found one yet. I tore back apart the center console to remove the radio/navigation unit and all of those connectors are okay.

Prior to removing anything, I disconnected the negative terminal and it was not reconnected again until just before I started it back up (the engine starts fine).

This is the 2nd time I've replaced a dash in a 3G (previous was a 2004 TL MT), and the first time must've gone better than this time because I even wrote up a how-to and didn't think it'd be that big of a deal to try it again.

 

I'm checking on Semperbenjamin's reply https://acurazine.com/forums/3g-tl-p.../#post16625676 and hoping for the best today.

 

So this is now a PSA. On the under-dash fuse panel, there is a connector (called the MICS service check connector) that happens to match the driver's side footwell light connector. So when you're going all willy nilly connecting all of those loose wiring connectors up, don't plug anything into this socket.