If your garage door opener remote stops working, the first thing you should do is check its batteries. Make sure that you're using a fresh set of batteries in your remote. If the new batteries still don’t work, it may mean there's an issue with your opener or overall unit. As regular maintenance on both manual and automated garage doors, it's important to keep them lubricated in order to ensure they run smoothly and avoid problems likely caused by debris or rust buildup along the tracks. A silicone lubricant spray on the tracks and wheels can help keep this from happening. Next, make sure all mechanisms are properly aligned because misalignment will prevent the smooth operation of either type of door from functioning properly. Check that all parts including cables, springs, and pulleys are connected correctly as well as securely fastened to supports firmly attached either to the wall or flooring material around the opening location. Spraying these components regularly with a light machine oil will also help prolong their life span and prevent having to replace them far too soon due to rusting over time if not maintained correctly. To finish up, make sure all bolts/screws are tight so nothing becomes loose during operation as this could cause damage not only at present but also down line after multiple usages, etc… so if anything looks like its coming loose tighten it up (or have someone who knows what they are doing take care of this for you). Finally, if none of these simple steps prove helpful then it might be time for a professional service call on your unit because chances are something more serious has gone out such as motor etc… As always, safety comes first so use caution when attempting any repairs yourself – contact an expert rather than risk injury!