I have a 2013 Camry and at a constant speed of 45 but also happens at 35-40 I get a heavy vibration in my steering wheel. I have already taken it to three different transmission shop to see if it was the transmission and nothing showed a code. One of the shops told me the motor mounts go be getting weak a causing the vibration. It also vibrates before raising the RPMs going up a hill. What could be going on?
Several things can cause that. Doesn't seem like motor mounts. Has the car been in an accident? Evaluate for these: worn wheel bearings; uneven wear on tires; other tire(s) damage; bent wheel(s) or damage to front-end suspension. Check this: https://www.youtube.com/watch?v=wbsUTESwOMY