Very likely the force of the impact also tripped the roll-over switch. Get your owner's manual and find its location. It will probably be mounted behind a trim panel in the trunk. This switch turns off the fuel pump so the engine will stop running in the event of a roll-over. Re-setting it is a simple matter of pushing a button. Finding it is the hard part.
No, it will not.
No, vehicles should be able to start after a airbag is deployed. The accident itself could have made the vehicle unstartable.
Reset the light. Turn everything off. Turn the key on and off when the light just goes off. Keep doing this several times, the light will reset
There are many wires on a Dodge Neon that can cause a no start condition.
No, it should come on solid for about 5 seconds and then go out if the system is ok.
To reset the airbag light on a 2005 Dodge Magnum, first ensure that there are no active issues with the airbag system. Disconnect the negative battery terminal and wait for about 10 minutes to allow any residual power to dissipate. Reconnect the battery and start the vehicle; the airbag light should reset. If it remains on, you may need to use an OBD-II scanner to clear any stored error codes.
No, a Dodge Avenger will run without oil pressure.
No
I would start with your battery.
Yes it can
Yes, the factory alarm can cause a no start.
Yes, just about any sensor on the engine could cause a no start.Yes, just about any sensor on the engine could cause a no start.