For posterity, here is how I was able to replace the liftgate warning chime.
Below is just a recounting of what I did – I’m not responsible for what you do to your car 😊
MOPAR part # 55364517AB
Tools needed: Torx T15 and T25, various panel tools.
Use Torx T25 to remove both tie-downs.
We just bought a used 2017 Touring L-Plus with 8,000 miles. Drove it 2 days perfectly and the wife loved it.
Now, after it sits for 15-20 minutes, the push buttons on the sliding door handles don't work and the FOB buttons won't automatically open the doors or liftgate either. The car just...