Hello all, normally I'm pretty good with troubleshooting and fixing things... until now. This one has me stumped and hoping one of you can help me figure it out. 2004 TL with 244,863 miles on the clock-o-roonie. Has been a solid car since I bought it with 133,000 miles.
Recently had to replace the alternator, but then so many things all of a sudden just don't work anymore. No a/c, no heat, no defrosters, no fan, none of the buttons on the no-nav climate control do anything. The backlight on both top and bottom displays and all the button leds all work and radio works (so there's definitely power going into the CCM. Everything on the bottom radio display works, but top climate control display is blank. No heated seats and sunroof switch does nothing. And only the driver door window works. The other 3 are dead buttons too. Also, the outside temp gauge shows "- - -". ALL of these things were working perfectly before the alternator install.
I've checked all fuses and replaced relays. I replaced the whole climate control module and replaced the blower motor resistor. Fuse for sunroof is good, so why doesn't that work anymore all of a sudden?
None of these fixed the problem. What else could cause these symptoms at once?
edit: Also, would any of this have anything to do with the alternator replacement? Wrong alternator?