[KESAL]

2006 300c trunk release just unlocks the trunk, but is really no hydraulic force to open it. I found a broken very tuff spring (broken) that I suppose is the one that pushes the lid up when you press the button
Please somebody take a picture of that spring so I know how to put it back.
It is tough sometimes to get your hand under the trunk to get it open

 

[dhoolwerf]

The trunk lid doesn't pop up on these cars. The button only unlocks it...you then have to lift the lid open yourself.

 

[Mike W]

If you added an aftermarket trunk spoiler, you can move the trunk lid springs one notch towards the rear of the car so it will lift open when you push the button.

 

[dhoolwerf]

If you added an aftermarket trunk spoiler, you can move the trunk lid springs one notch towards the rear of the car so it will lift open when you push the button.

On a 2006??

 

[Mike W]

I have a 2018, not sure about the 2006. You should look in the trunk for the springs.

 

[dhoolwerf]

I have a 2018, not sure about the 2006. You should look in the trunk for the springs.

Ah, okay...OP is asking about his 2006 300C. 1st gen has no springs to push the lid up...just struts to keep it open.