I have an amp and sub in my trunk. The amp is hidden under the trunk panel on the left side. I got my coil over installed last weekend. I assume they needed to take out the trunk panel to access it.

now, every time I start my car, the climate control doesn’t work. I press the button but nothing turns on. I have to turn off the car and start it again RIGJT alwyss then the climate control works. It happens Everytime.

Also when I start the car, sometimes the bass makes a loud sound

 

For the last issue, is your sub gain turned all the way down when starting the car? If I remember, if there is some gain from the last drive as you start the car. The sub gets powered and you get that bass sound.

For your climate control settings, did you also have the head unit replaced or worked on? Assuming you put some custom sounds on, you might want to check the climate control is properly connected to the harness as well.