Mazda CX-9 grinding sound when operating driver's side window, possible gear issue with window motor on Mazda CX-9

Some Mazda CX-9 owners report experiencing a grinding sound when operating the driver's side window, which is often attributed to issues with the window motor gear. This problem may manifest as broken teeth on the plastic gear within the window motor, leading to noise during window operation. Many owners notice the grinding noise particularly when the window reaches full travel, suggesting a potential malfunction in the gear mechanism. Replacing the window motor is frequently recommended to resolve this issue and eliminate the grinding sound. Additionally, problems with the window motor can result in incomplete opening or closing of the window, highlighting the importance of prompt attention to this matter. Over time, the window motor may wear out, causing operational difficulties and persistent grinding noises. It is advisable for owners to inspect the window motor gear for any signs of wear or broken teeth and consider a replacement to restore proper functionality.