Alright everyone, here my millionth update/post regarding my 06 TL.



This issue has been haunting me for the past year and change



Back last summer my TL started acting funny, while driving randomly,



my Wipers wouldnt work fully, only on full auto and i have no fluid sprayers



the turn signals indicators/turn signals dont work at all, nor do highbeams or fogs



the headlight indicator on the dash would not turn on as well but the lights are on.



And when i close the driver door when its acting funky, i can hear the actuator fire off but do nothing.



The door lock and memory seats dont work but everything else window wise in the door does. Yet the passenger door lock works



The door open indicator is also gone unless the car is running normally.



It was doing it mostly when it was hot during the summer but it would eventually kick on with the a/c and id have no problems at night.



I changed the a/c compressor as it was going bad and the problem still persists.



My hazards work and show up in the dash.



All my fuses look good none are blown.



Now this past winter its just happening if i keep the heat on. If i keep the interior cold it was fine. So this whole problem is heat related.



The MICU doesnt look corroded and i dont have leaks from the windshield. The problem is gone on cloudy cooler/rainy days. And there’s no water intrusion.



I just plopped a new battery in as of 1/26 to see and it didnt help.



WHEN THE CAR IS OFF THE HEADLIGHT INDICATOR SHOWS ON THE DASH AS SOON AS I CRANK THE CAR OVER AND TURN IT ON IT DISAPPEARS!



I CHANGED THE MICU/WHOLE INTERIOR FUSE BOX TODAY AND STILL HAVE THE ISSUE. WHEN THE CAR IS OFF IT ACTS NORMAL, AS SOON AS I PUT IT IN ACCESSORY MODE OR CRANK IT OVER IT THROWS A FIT!



Things ive changed:



Outside temp sensor

All black top relays

Micu/interior fuse box

Fuses

Ignition switch.

Turn signal relay



Im at my wits end here. Any help would be appreciated. Or a solution if anyone has ran into this before. At the very least, where do i go next? Please help me save my car lol

 

If you have my scenario and your micu is ok, completely remove the hands free link! The harness reconnected itself and shorted all my other systems!

 

sounds like a bad MICU to me