After 2 days of not using the car today I went to start the car,it idles for 3 seconds then dies, no matter if you rev it or not, it just plain dies! Nothing was touched or anything..car was fine 2 days ago

when i start the car and rev it dies too...i can hear like a buzzer on the engine bay,when i go to ACC you can hear a buzz then it shuts..

where should i start looking?

 

check your battery first and foremost and then the main relay.

 

What fuel? and how cold is it where you are?

 

30C, Tried another battery and the same..which is the main relay?I can start the car and rev it to 8k but it dies ...