09/15/2026
Dealers: share this one with your customers 🔶
Why won't your garage door close when the sun hits the sensors?
Direct sunlight can blind one of the sensors. Here's what's actually happening- one sensor sends an invisible infrared beam, and the other receives it. When the sun shines straight into the receiving sensor, it overpowers that beam. Your opener reads it the same way it reads a bike left in the doorway, and it refuses to close the door. That's the safety system at work.
Three things to try:
1️⃣ Wait a few minutes. If the sun moves, and so does the problem.
2️⃣ Shade the sensor with your hand or a piece of cardboard. If the door closes, you've found it!
3️⃣ Clean both sensor lenses and check that they're aimed at each other.
If it keeps happening, a door professional can swap the sensors to opposite sides of the door or add a simple sun shield, and the problem is gone for good.