5d mk iv with 70-200

[Lfourn15]

I have a 5d mk iv and a 70-200 lens. When I try to take a photo, the shutter won't work and the lens will not focus. It basically won't do anything. It only happens sometimes. If I take the lens off and put it back on, it will usually work again. Has anyone else had this issue?

[Lfourn15]

I have sent an email to canon.
When the button stops working, I have changed it to [A] mode and it still does nothing. The only thing that seems to help is it if I shut it off take the battery out.
I'm going to check my button programming.

[ebiggs1]

It isn't BBF or any other button.

"I have sent an email to canon."

You need to need to call Canon.  They will ask you some questions.

[Lfourn15]

Thank you for your help. I will call canon. I tried to use the camera tonight, the shutter continuously stopped working. There is definitely something wrong. I've only had the camera a month.

[ebiggs1]

It is covered by warranty.  

[Lfourn15]

Thanks for your help! Canon said there is definitely something wrong, I've already exchanged it at the store and have a new one.