knocking from right rear when turning to right

Hi, my name is Devin. I am an auto repair expert with the Car Genius team here at RepairPal. I'm sorry to hear you're having trouble with your vehicle. A knocking noise from the right rear of your Avalon when turning could be caused by several issues. Given it only happens on right turns, it might be a worn suspension component, such as a sway bar link, sway bar bushing, strut mount, or a loose control arm bushing. The movement during a right turn puts extra load on these parts, which could cause the knocking sound if worn or loose. To pinpoint the source, a mechanic can inspect the suspension and rear wheel area to check for worn parts or loose bolts. If you need more advice, have any other questions about your vehicle, or would like to get connected to a RepairPal Certified shop near you, we have you covered. Give us a call at 877-913-1554, and we will happily help you out!