Yes, the key has a anti theft computer chip in it.
Just call Parts, the battery costs $6.00 you can replace it yourself.
Had the same problem and it was the computer chip in the ignition key
When why open my Chrysler 300 door with key and the alarm goes off I immediately put key in the ignition and turn car on, the alarm quits instantly
The Chrysler 300 key FOB must initially be programmed at the Chrysler dealership. You can use the Chrysler dealership FOB code to change the initial code to your personal code.
A small round red circle is the antitheft/ chip key warning light.
$225
To replace the battery in a Chrysler 300 key fob, first, locate the small notch or seam on the fob and use a flat tool to gently pry it open. Once opened, remove the old battery, usually a CR2032, and replace it with a new one, ensuring the positive (+) side faces up. Reassemble the fob by snapping the halves back together firmly. Finally, test the key fob to ensure it functions properly.
Chrysler sebring ignition damage by thief key doesn't work how do you replace?"
Yes, but with the security chip in the key you may have to go to the dealer.
Replace the fuel filter if it is replaceable. You may also have a weak fuel pump.
To replace the battery in a Chrysler 300 key fob, first, locate the small slot on the side of the fob and use a flathead screwdriver or a coin to gently pry it open. Remove the old battery, typically a CR2032 or CR2025, and insert the new battery with the positive (+) side facing up. Once the new battery is in place, snap the fob back together securely. Test the key fob to ensure it is functioning properly.