2002 automatic transmission. Recently we did a coolant flush and changed the thermostat. After that it started to stall out at stop lights. We changed the air filter, ran fuel cleaner through, and changed the PCV hose. Plugs and wires were done not long ago. It seemed to fix the problem but it did have a check engine light come on reading mass air flow was blocked. About a week or so went by with it running normally. Then the car stalled out at an intersection. It wouldn’t shift from park, the brake pedal is hard. Got it to shift by using the shift release and got it towed home. We have changed the ignition switch and that did not help. It gives no crank at all, break lights and dash lights do not work, the windows will not roll up. When you open the drivers door the buzzer goes off like the key is in the ignition but it isn’t. The interior lights work and the radio works fine but will not turn off even with the key out. PATS light always has a slow blink. Checked all the fuses and they all look fine. I am kind of at a loss. Thinking maybe neutral safety switch or break light switch? Any help would be great.