Rear hatch latch. Not opening . Replaced with new actuator. Still not working. No clicking noise.
. Thanks for any comments. Other doors work fine.

 

First check your fuses (I have no idea which on the rear hatch actuator motor is hooked to).
If the fuse is good, you should get a click unless the actuator and/or wiring is bad.
Get the new actuator tested and make sure it is actually working and go from there.

 

Welcome to the forum.

I think I may have tried the acuator before installing or have checked the suspected actuator when I removed to verified it was the actuator and not the control or power supply during actuation? That said you will need to re-step your service process and determine the true problem.
I do recomed for any issue to always varify that it is a the parts that has failed or causeing the problem before replacing it. Often times many will assume a part has failed replaced it and in doing that service inadvertanly caused other added problems.

 

2015 cx-5...My rear hatch latch lock will not work sometimes during cold temperatures. When it warms up, it works.