07 chrysler sebring won't crank no start everything works but radio don't turn on? My car has a chip in order for it to start..did that nothing? ?? Please help me

Could be the neutral safety switch, or the key switch. Will it crank in neutral instead of park ?

Check if you have power at the starter from the ignition key
Try give direct power to the starter, if still not starts, you have a bad starter

You folks never learn, you can't use just any aftermarket sound system in these newer vehicles. The electronics are all networked together. I have no idea what you have damaged.

i have the 2.7 as well. mine is in an intrepid. Car was running perfectly fine when i went into bestbuy and when i came out 5 min later i tried to start the car and it would just crank n crank. no start though. eventually it started after lots of cranking. after a couple of times of doing this in order to start the car i would get nothing from the startrer. everything had power and everything electrical worked. found out that if i went under the car and hit the starter with a hammer a couple of times it would finally crank again. but i had to do this every time i shut the car off and wanted to start it again. i loive in WI and its wintyer right now so it really sucked to do this. took it to my buds shop and pulled the starter out and dissected it and found that the (i believe they are "brushes") were ground down to next to nothing, the positive ones, do to constant cranking. was going to get a starter from junk yard for 20 befor i knew what the problem was. did some calling around and found brand new brushes for $20.00. i just got those and installed them and had a good as new starter again. lots of dust to clean out of the housing though. brake fluid and air hose works wonders for that problem. but from best buy on the car would not start without starting fluid if it was at running temp. still yet to solve that one. replaced the cam sensor, crank sensor, plugs, COP's and checked the rest of the sensors. still cant figure this out. anyone have advice let me know what i can check. fuel pump kicks in wen the key turns as well...

You'll have to figure out if it is a fuel or ignition problem.
Is the check engine light on ? Have you checked for trouble codes ?
It could be a relay, the ignition module, coil, fuel pump, or a list of other things.

Clean your battery terminal and all ground connections. Get the battery tested. Replace if necessary. If it still happens, you'll have to get an electrical diagram and check circuits from the ignition switch to the starter

Did you check the timing belt to see if it broke? It ha a 2.5 and it has belt. Remove timing cover at the front of the engine and have someone crank it while you watch the cam to see if it turns. If it doesn't turn, replace the belt.

have you lost the chip out of the key,try the spare key

I had same problem when I had a plain copy of the key made.
There's a proximity chip in the factory key or something, but the plain copy would not work. Engine would crank, then immediately stop. I didn't need the extra key bad enough to spend $80+ at the dealership.