my 2006 dodge magnum with a 5.7l engine runns very rough, it wont idle corectly,

have codes scanned and post so we can adv.

Well if vehicle won't run -start with taking out battery and have it checked at your local autozone. Your vehicles computer's primary source of power is battery. Voltage regulating controled by ECM. Also, check to see if vehicle has fuse for charging system- that lightning bolt indicates some type of charging problem (though again- START WITH BATTERY). If battery and fuses ok may want to consider taking off alternator for bench test. You got to hope one of those your problem cuz if charging issue could end up being problem within ECM.