k3 autofocus

Out with k3 yesterday when using spot focus, focus a lot of times staying locked had to take shot to get it going again, back auto focus worked fine . Also would go off sometimes with movement of camera any ideas

I've had mine focus and then wouldn't take the shot a number of times. Very random. I've sent mine in for repair/service....

Never had it go off with the movement of the camera. Do you have a grip on it? could the button on the grip have triggered the camera?

No focus lock went off with movement of camera tried today with fully charged batteries seems ok , batteries yesterday were nearly depleted