Common Causes And Easy Fixes For Garage Door Sensor Problems
If your garage door suddenly refuses to close, it can disrupt your entire day. For San Antonio homeowners, a malfunctioning garage door can also leave your property exposed and unsafe.
At Hollywood-Crawford Door Co. we understand how stressful it can be when garage door sensors not working prevent your door from functioning properly. Our technicians are trained to identify the cause quickly and restore your door to full operation.
1. Check For Obstructions In The Sensor Path
Garage door sensors rely on a clear path to detect movement and close safely. If anything blocks that path, your door will remain open. Make sure no boxes, tools or storage items are near the sensors.
Sweep the garage floor and check both sides of the door for debris or clutter that may interrupt the infrared beam. Keeping this area clean is one of the simplest ways to prevent sensor issues.
2. Confirm The Sensors Are Receiving Power
If your door still won’t close, inspect the LED lights on both sensors. When both lights are steady, the sensors are powered correctly. If one or both are off, it’s likely a wiring or connection issue. Loose or damaged wires can stop your sensors from working. Before trying to repair the wiring yourself, call Hollywood-Crawford Door Co. for a professional garage door sensor repair. Our team will safely inspect the power source and make sure your system is connected properly.
3. Clean The Sensor Lenses
Over time, dust and dirt can accumulate on the sensors, blocking their ability to “see” across the garage door opening. Wipe the lenses gently with a soft cloth or microfiber towel to remove any buildup. As part of your regular maintenance routine, clean the sensors every few months to keep them functioning efficiently.
4. Look For Moisture Near The Sensors
Moisture can temporarily disrupt the signal between sensors. After heavy rain or sprinkler use, check to see if the area around the sensors is damp. If so, let it dry naturally or carefully pat it dry with a cloth. If moisture issues persist, you may need to reposition the sensors or adjust your sprinkler pattern to keep them dry.
5. Make Sure The Sensors Are Aligned
If your garage door sensors become misaligned, they won’t be able to communicate properly. This often happens when the sensors get bumped or moved slightly. Check to see if both LEDs are glowing steadily. If one is flashing or dim, carefully realign the sensor until both lights stay solid. Even a small adjustment can restore proper operation.
6. Consider Age And Wear
Garage door sensors can wear out over time, especially if they’re more than 10 years old. Exposure to sunlight, humidity or vibration may cause gradual damage. If you’ve tried all the steps above and your garage door sensors are not working, it may be time to replace them. Our certified technicians can install new sensors that meet current safety standards and ensure long-lasting reliability.
When To Replace Your Garage Door Sensors
Sometimes repair isn’t enough to restore full functionality. If you’ve already ruled out power, alignment and cleanliness issues, it may be time to replace your sensors altogether. Signs it’s time to upgrade include:
- Sensor lights fail to turn on even with proper power
- Your garage door only closes when the wall button is held down
- Cracks, corrosion or visible water damage on the sensor casing
- Frequent misalignment or connection problems after adjustments
- Sensors older than 10 years or no longer supported by the manufacturer
If any of these apply, replacement is the most reliable fix. Hollywood-Crawford Door Co. offers modern, efficient sensors designed to meet today’s safety standards and work seamlessly with your existing opener system.
Schedule Your Garage Door Sensor Inspection Today
Don’t let faulty sensors leave your garage door stuck open. Schedule a professional inspection today with Hollywood-Crawford Door Co., San Antonio’s trusted name in garage door repair. Call us or book your service online and get your garage door working the way it should.
