I have a 17 Denali and I did the video removal trick and it works with my iPhone X. I initially did not remove the magnet and it would only charge for 2-3 seconds and lose connectivity. I removed the magnet between to coils and it now works great.
Here is what I used in my 14 and now my 17. I do recommend pulling the car seat out every few months to clean or whatever, and then let the seats breath.
https://www.amazon.com/Diono-Ultra-Full-Size-Protector-Black/dp/B00BFQ5BM0/ref=sr_1_1_a_it?ie=UTF8&qid=1481474736&sr=8-1&keywords=diono+seat+protector