99 4Runner won't start

Do you hear anything like the starter trying to turn the motor? Do you hear any clicks? If you do hear any of these you got problem with the starter.

If you don't hear anything at all, you might have an electrical issue.

Same thing happens to me I got a 90 4Runner and sometimes it will start and some time it wouldnt. But if u wanna fix da problem it will probley be ur starter cuz the engine heats the starter up and when u turn off the engine your starter get very hot and it wont start cuz their is a crank in the starter and it heats on to a metal piece in the starter. So in order to loosen it up is to keep cranking it by puting ur key in the egnition turning it on and off that will make the crank in the starter loose is it will start. Turn it on and off as fast as u can until it starts. I still havnt change my starter and its been 2 months since ive been turning my truck on and off until it starts. Hope this info will help

I had a similar problem. There was no clicking sound when the key was turned. But the headlights would keep flashing. But all the electrical (lights/cd player/etc.) Worked fine. Took it in to an electronics specialist and they said it was the stock car alarm that was interfering. I had it removed and my car works fine. Hope this is somewhat helpful