I have an nx350, and I've noticed a clicking every time I'm in reverse, its more noticeable when turning and backing up, Like into a parking spot. I'm thinking this could be something from the differential, has anyone had a similar occurrence?

I'll be taking it to the dealer, but wanted to know if anyone has had a similar experience.

 

mine (350h) does the same clicking sound when I reverse and hit the break for the first time in reverse.

 

Brakes clicking when first applied in Reverse is perfectly normal. It's just the pads shifting from "leaning forward" against the calipers to "leaning back". The same click will happen when driving forward after braking in Reverse.
Other (repeated) clicking may or may not be a problem. Cars shouldn't "click" when reversing but it's hard to say if this indicates a problem without digging deeply into what's clicking and why.

 

much appreciated, dealer reviewed it can said it was called pad shifting. Seems to be what you are describing. I don't think I've driven a vehicle that I've been able to hear something similar, so that threw me off.