Originally Posted by
Drama Llama
It's not even a hack.
He just kept entering codes untill one that was in the car wash system at that time was entered.
there's 10 thousand possible combinations with a 5 digit number ending in zero. the hack is the system lets you through if you enter a wrong number ending in 0 after 10-15 tries EVERYTIME. if you still don't understand, take a probability class.