I have to clean the motor brake on mine every 6-9 months or so. Pretty easy job. I use CRC electronics cleaner. Take it off with 2 or 3 screws, spray it down inside and out, put it back in and it works for another 6-9 months or so. Worse part is moving the mattress out of the way to get under it. On the up side, the first few times I cleaned it, it was every 4 months. Now it's at longer intervals. Good luck.