Chrysler 2013 300 SRT - Owner Manual - Manual (Page 16)

To remove the emergency key, slide the mechanical latch
on the back of the Key Fob sideways with your thumb
and then pull the key out with your other hand.
NOTE: You can insert the double-sided emergency key
into the lock cylinders with either side up.
Mechanical Latch On The Back Of The Key Fob
Emergency Key Removal
14 THINGS TO KNOW BEFORE STARTING YOUR VEHICLE