I determined the hidden bake element below the oven cavity was not working, because the bottom of the oven was cold during normal use. If you have a built-in microwave + oven combination (mine is KitchenAid Model No. KEMS308SSS05), this is a difficult repair. The engineer who designed this oven should be invited to succeed elsewhere. It is impossible to access the bake element from the inside of the oven, so the How To video associated with this part will not help you. I had to remove the oven from the wall. To avoid having to lower a heavy oven to the floor, I used a cart with adjustable shelves, onto which I slid the oven and rolled it away from the cabinet. You could also use a moving dolly stacked with wood blocks. This made it easy to turn the oven around so I could open the back, and due to how low the bake element is positioned, having the oven 18" off the ground made it easier to see what I was doing. Before taking the oven out, I recommend removing the lower metal trim piece, so you don't accidentally bend it while making repairs. Also take off the oven door, racks, and microwave turntable. Once out of the cabinet, I removed the lower rear service panel, disconnected the bake element electrical connectors, and opened the compartment leading to the bake element. I folded down the metal of the compartment, which was sharp, so I wore gloves. Then, I cut a slit in the insulation the width of the new bake element, and used a putty knife to move it out of the way (there is no opening in the insulation, which is wrapped all around the oven - terrible design). I wore a mask during this part, because the cutting produced a lot of fiber debris. I removed the four screws from the metal plate holding the bake element in place; they are hard to find, hidden in the insulation (one on the far left, two in the center, one on the far right). Then, I worked the old element out. It was completely deformed, so I had to twist it back and forth and press down on the bottom of the compartment to get it out. I transferred the metal plate from the back of the old bake element to the new one. Sliding the new element in was straightforward, but getting the four screws for the metal plate back in was a pain. It took me several minutes to line up the holes. I also had to keep pushing the insulation out of the way. I closed everything up and voila, my oven was reaching bake temperatures again.