Lucky you! & Welcome!
"Sticky key" I think is caused by a broken part in the ignition switch itself. Ours was replaced & no problem since. Crossfires tend to need a battery that is in good to excellent condition. A "load test" may be the best indicator because batteries slowly self destruct from lack of use or regular charging. I'm no tech but thanks to the forum I've tackled the crank position sensor & "RCM" successfully.
I've read about airbag light issues with those replaced because they had the Takata recall. Look for the correct "heading" to post specific questions. Best Wishes & Enjoy!