Kenmore InteliClean 116.35923502 Two, I believe unrelated, problems. 1) The InteliClean sensor lights stay amber and red even when the machine is in the upright position and the suction line is disconnected from the cleaner head. 2) There is a lot of vibration and noise in the agitator roller housing. I picked a little hair out of the roller brushes but other than that they were clean. Thank you for any suggestion you might offer.

I had the same problem with the amber inteliclean light continually on. I found the problem to be in the plastic housing that connects the suction hose to the back of the upright section. You have to remove three screws and gently pull the hose housing off the vacuum. Inside I found a hairy clump that was caught on the inside of the hose. The optical "dirt sensor" is just inside the fitting on the upright section. When dirt or other stuff blocks the optical path of the sensors, the amber light will illuminate. My vacuum had an uneven cut on the hose which caused a snag point for hair, dirt and debris. Once this was removed, the vacuum worked like new.

Regarding the roller, this unit has an integrated motor in the roller. I would guess that you will need to take it apart, and hopefully only clean it up. If you need bearings, that will likely be expensive.