Air not blowing, blinkers not working, powering off randomly

Hey there!
I have a 2003 V8 4Runner.
I am needing some ideas on what is happening.

I was hauling a trailer today and as I was backing up issues started happening. My A/C, which was switched on full blast, stopped blowing air and the entire digital display shut off. The digital display that shows the MPG, air controls, temp, and clock. But the clock still is on, nothing else. Upon further investigating we discovered the blinkers aren’t working either.
Fuses and switched have been checked and were all fine.

Drove home, started to hear clicking then a very loud beeping sound. Luckily I was pulling in my driveway...
and when I stopped to investigate and shut my 4Runner off it wouldn’t start back up. Did some research and thought it was my alternator. Changed that, and it fired back up!
No air still and no blinkers.
Shut the car off to clean up and then hoped in for a quick drive...
Started backing up and the vehicle lost power and died. Now it won’t start at all.

Any ideas? At an absolute loss!

Thanks in advance!

 

probably not much help, but on my late 90's/early 2000's Blazers, weird stuff like that was often caused by a bad ignition switch (misnomer since it's actually a wiring harness that comes off the key cylinder) . GM and 'yota are probably totally different animals in that regard but it *might* be something similar (?)

 

Hey I have the same problem on my 2003 v6 4Runner. No a/c, no turn signals. Happens after towing a trailer as well. Stumped don’t know what wrong. Changed the battery and the alternator. Was running good when I changed the battery but lost all power after driving for about an hour.
Please help

 

Just a guess, but take a look at open grounds or other wires wires that are open (no shorts).

 

Won't start how?

 

If the alternator was bad, it might have killed your battery. I'd pull that and have it checked and replace as needed. Battery issues can cause all sorts of wierdness in a vehicle that was working just fine previously, which it sounds like your was.