Garage door sensors are essential safety features that prevent accidents and injuries by detecting obstacles in the door’s path. Proper maintenance and troubleshooting of these sensors are crucial to ensure they function accurately and effectively. At EDM Garage Door, we prioritize the safety of our customers. In this article, we’ll guide you through the maintenance and troubleshooting of garage door sensors to ensure your garage door operates safely and smoothly.


Garage door sensors are designed to detect objects or people in the door’s path and automatically reverse the door’s movement to prevent collisions. Regular maintenance and troubleshooting are essential to ensure the sensors are functioning correctly.

Understanding Garage Door Sensors

Garage door sensors consist of two components: a transmitter and a receiver. The transmitter emits an invisible beam that the receiver detects. If an object breaks the beam while the garage door is closing, the sensor triggers the door to reverse.

1. Regular Maintenance

Tip: Regularly inspect and clean your garage door sensors to ensure they’re free from obstructions.

Method: Check for dust, dirt, or cobwebs on the sensors. Gently wipe the sensors with a clean, soft cloth to remove any debris that could interfere with the beam.

2. Alignment Check

Tip: Proper alignment is essential for the sensors to function accurately.

Method: Close the garage door and activate the door’s closing mechanism. As the door is closing, place an object (not your body) in the path of the sensors. If the door stops and reverses immediately upon detecting the object, the sensors are properly aligned. If not, the sensors need realignment.

3. Realignment

Tip: Misaligned sensors can prevent the garage door from closing properly.

Method: Gently adjust the sensors by loosening the mounting screws and repositioning them. Use a level to ensure they’re perfectly aligned. Tighten the screws once the alignment is correct.

4. Clean Sensor Lenses

Tip: Dust or dirt on the sensor lenses can interfere with the beam’s path.

Method: Use a soft cloth to gently clean the lenses. Avoid using abrasive materials that could scratch the surface.

5. Check Sensor Wiring

Tip: Loose or damaged wiring can affect sensor functionality.

Method: Inspect the sensor wiring for any visible damage or loose connections. If you find any issues, consult a professional for garage door repairs.

6. Test the Sensors Regularly

Tip: Regularly test your garage door sensors to ensure they’re working as intended.

Method: Place an object in the sensors’ path while the door is closing. If the door doesn’t reverse upon detecting the object, the sensors might need cleaning or realignment.

7. Seek Professional Help

Tip: If you’re unsure about sensor maintenance or troubleshooting, consult professionals.

Method: At EDM Garage Door, our technicians are experienced in garage door sensor maintenance and repairs. We can ensure your sensors are functioning accurately for maximum safety.


Garage door sensors are vital for the safety of your family and property. By regularly maintaining and troubleshooting these sensors, you can prevent accidents and ensure your garage door operates as intended. For expert assistance and reliable garage door service in Volo, IL, trust EDM Garage Door. Our team is committed to providing safe and efficient garage door operations for your peace of mind.

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