Guys, turned on my ac today and my readout for mpg, outside temp, etc went blank and my a/c did not turn on all the controls went dead and unresponsive. Then a few minutes later i noticed i did not have turn signals either, however my emergency flashers work fine.........What do you guys think ? ive looked all over for a specific turn, or ac fuse and cant find one ? would they be linked together or has anyone had this type of problem?

 

Check the alternator for output.

 

Well, I tried to go to autozone to check alternator and battery but didnt make it............. Got half way there and all sorts of lights started coming up on my dash, vsc, trac off, etc etc coming on and going off, doing all sorts of stuff, next my radio turns off, next engine starts sputtering, coast into a parking lot and shes dead..............took it to my dads and hooked it to a battery charger, and it started up and ran perfect, unhooked the battery cable and died instantly, so we charged battery and it had about 12.4 volts, started up 4runner and it had 12 volts so, alternator must be shot........got it taken off and ready for a new one to go on, it free wheeled very easy with no resistance and there was alot of oil and dirt buildup on it, it was the factory toyota one so 222,000 miles out of an alternator isnt too bad, i will come back and report if its fixed all my issues once we get the new on put on this week. Thank you CJM for pointing me in the right direction!

 

Put a new alternator on, still not charging/same symptoms.....Check every single fuse ended up being a IS1? fuse blown, put a new one in everything worked.......alternator was proabably fine but its got a new one with lifetime warranty on it now......smh

 

old thread, but it's the only one I could find with the same issue I'm experiencing. Where is the "IS1" fuse?

 

Pretty Sure Its In The Cab In drivers Side Dash Fuse Compartment, It Was Like A Tiny 5Amp One....Would Have Never Dreamed It Would Cause That Many issues

 

THANKS! found it and that fixed everything. How all those different and unrelated items go through that circuit is really odd. It's a 15A fuse

 

Awesome, glad it fixed your issues!