2007 dodge magnum wont start

SOURCE: 2006 dodge magnum check engine

Get in the car, close the door. Perform the following steps fairly quickly (less than 3 seconds) :

Turn key to ON
then back to ACC
then to ON
then back to ACC
then to ON

If there are any stored codes, they will appear immediately, in place of the odometer. For instance an "INTAKE AIR TEMPERATURE SENSOR CIRCUIT HIGH" error will set a code of P0113.

You may also try and pull Fuse 11, and wait 10-15 seconds to reset the cars internal computers.
More information can be foudn here: http://www.custommagnums.com/forums/misc-mods/1361-how-check-obd-2-codes.html

SOURCE: 2007 Dodge Caliber will not start

Yes,They usually fail that quick

SOURCE: reset check engine light

The lught can be reset with an OBDII scanner. Most auto parts places like Advance or Autozone will read and clear the code for free.