My running lights are out and the dash won't dim. Also the night time lights on the HVAC and radio won't come on... it's like the car doesn't realize I've turned the headlights on... Anyone know why this might be happening?

Brake lights work. The dash dimmer does NOT work. The HVAC and radio LCD's work but they don't light of for night driving

 

By the way I did check the fuse (#13) and the wiring harness in the trunk. The harness looked fine...

 

I'm going to put my money on some sort of relay since it was all working the day before and the fact that several diff systems on diff harnesses and fuses are affected...

 

After some more searching it's def the tail light relay. Does anyone have a schematic something to show me where/how to replace this? It appears to be in with the fuses but I don't know where... also is there a way to swing the4 j/b down where it is easier to access? They sure put it in a PITA spot

 

I did troubleshoot it today and it was the relay... I had to go to the dealership to get a new one but better than throwing parts at it.. the toyota TIS is an awesome deal btw! The power window relay was the same so I swapped it over and I'll get it fixed when the part comes in...

 

Thanks for this thread. even though no one replied to you.

I am having the same problem as of 30 minutes ago.

 

anyone got anymore info on this?

 

What exactly do you need? I actually have a spare relay if you want to purchase it..