My QX60 will pair to my Android no problem but will not pair to iPhone 6s+. Don't get me started I'm not a fan of iPhone. Anyway it simply will not pair. Says "connection unsuccessful." This is my wife's phone and car. Any help would be greatly appreciated. Again, I know the process at least with an android as I connected my Note 5 no problem. What the heck is wrong with Apple here?

This may sound dumb, but can you verify bluetooth is turned on on the iPhone?
Does the car give you a code to punch into the iPhone? The way I remember it, you just go into general settings on the iphone, then bluetooth, then choose the car, then enter the code...
Are you going through all those steps and its still saying its unsuccessful?