Dome Light and seats memory stop working on our 2002 TL... All fuses are ok and everthing else works fine, Any ideas on where to check?

Thanks!

 

Do you have the 2G TL service manual? pg 22-242 thru 274 is all about Driving position memory system (DPMS). There is even a Diagnostic function test.

Main components are Driver's Multiplex ctrl unit, DPMS module (on the door) and Power seat control unit. Lots of grounds on the mux and pwr seat control unit. Psgr mux seems to be a pass thru for the power mirror functions.

I've known faulty mux to cause all interior lights to go out on a 6GA, but not just a dome light.