2016 Tacoma - Climate control and side mirror fuse issue

Hey there,

I have a 2016 Tacoma Limited. My blind spot monitor indicator on my side mirrors started acting weird a couple months ago. The light in my side mirror would randomly flicker regardless if I had the button pressed on or off.
About a month ago, the fuse for my climate control on my dashboard, which includes the defrost and blind spot indicator on my side mirrors, shorted out. I replaced the fuse thinking that this would fix the problem, but it only lasted about half a day and then it shorted out again. Basically every time I put a new fuse in, the fuse blows up within a couple hours.

Has anyone ever experienced anything like this that could share their experience/possible fix before I bring it in to the dealership?

Thanks in advance

 

Welcome to TW!

Are you the original owner?
Have any modifications been done to any of the circuits protected by that fuse?

It sounds like a wire is shorting to ground.
If no modifications have been done, it is possible that mice may have been chewing on some wires.

Here is the blind-spot monitoring circuit. Lots of stuff to check.

 

There is a TSB for Blind Spot Monitor Abnormal Operation on the 2016 (T-SB-0213-17). This may be the same issue.

 

Thanks @ShirtTucker! I'm the second owner, but I know that the original owner did not do any modifications. I'll go through the wiring details and see if I can find anything. I pulled my side mirror apart yesterday, thinking I'd look at the first obvious spot. Didn't look like there was any wear on any wire...

 

Thanks @dilbert! That's good to know that there is a TSB for the spot monitor. It's a pain that the fuse for it is the same as the climate control, ugh... I'll have a read and try to go through the steps to determine if that's the issue. Thanks again for your help!