2016 CX-5 Rear hatch button issue

I notice recently that the rear hatch is not locking completely.. but I recently noticed that I'm having a hard time opening it even when I unlock the car doors manually and also when I unlock the car doors with the remote.. sometimes I can have the car completely locked and walk up with the remote by proximity and I can get the rear has to open but not all the time.

Does anybody know what part the rear hatch button is to replace?
 
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