It’s a warm evening. You pull into the driveway, press the button, and walk inside. A few minutes later you notice the garage door is still wide open. You try again. It starts to close, then stops halfway and rolls back up. Nothing is in the way. Nothing looks broken. If this keeps happening around the same time every evening, especially in the golden hour before sunset, your garage door probably isn’t broken at all. It’s likely a simple case of Texas sun glare confusing your door’s safety sensors.
What’s Really Happening When Your Door Won’t Close
Every garage door built since the mid-1990s has a federally required safety feature. Two small sensors sit near the bottom of the door track, one on each side, about six inches off the garage floor. These are called photo-eye sensors. One sensor sends out an invisible infrared beam. The other sensor receives it. As long as that beam connects, the opener knows the space under the door is clear and safe to close.
If anything breaks that beam, even for a second, the opener assumes something or someone is in the doorway. It stops the door or reverses it back open. This is a good thing. It’s the same feature that keeps kids, pets, and cars safe. The problem is that the sensor cannot tell the difference between a real object blocking the beam and a bright light shining straight into its lens. To the sensor, both look the same: it can’t see the other side clearly, so it plays it safe and refuses to close.
Why Texas Sun Makes This Worse Around 5PM
During certain months, the late afternoon sun in North Texas sits low on the horizon. Instead of shining down from above, it comes in almost sideways, at just the right angle to shoot straight across your driveway and into one of those sensor eyes. When that happens, the sensor gets “blinded” by direct light, the same way your own eyes struggle to see when you look straight into a sunset.
This is why homeowners in McKinney, Allen, and Frisco often notice the exact same problem at the exact same time every day for a few weeks, and then it disappears on its own as the seasons change and the sun’s angle shifts. It isn’t your imagination, and it usually isn’t a sign that your opener is failing. It’s a sun-angle problem, not an equipment problem. The tricky part is that it can look and feel exactly like a broken sensor, which is why so many homeowners assume the worst before checking the simple explanation first.
How to Tell If Glare Is the Cause
There are a few clues that point to sun glare rather than a real malfunction. The door usually works fine in the morning and at night, but not in the late afternoon. The problem tends to show up during the same few weeks each spring or fall, when the sun angle lines up just right. It often gets better or worse depending on where you park a car or where a tree casts a shadow. And if you crouch down and look toward the sensor from where the door would be closing, you may notice you’re squinting directly into the sun yourself. If your opener light also blinks a certain number of times, check your owner’s manual. Many brands use a blink code to tell you it’s a sensor alignment or obstruction issue, which lines up with a glare problem.
Quick Fixes to Try First
Before you assume you need a new opener or a service call, there are a few simple things almost any homeowner can try. None of these require special tools, and most take less than fifteen minutes.
- Wipe both sensor lenses with a soft, dry cloth. Dust, pollen, and light haze can catch glare and make the problem worse.
- Add a small shield or visor above each sensor. Even a piece of cardboard, a small metal flap, or a short section of PVC pipe angled over the top of the lens can block direct sun without blocking the infrared beam between the two sensors.
- Gently adjust the angle of the sensor a few degrees downward or to the side, away from the direct path of the sun. Most sensors have a small wing nut or bracket screw that lets you tilt them slightly.
- Trim back any bushes or plants near the sensors. Overgrown landscaping can shift and change how light bounces around the garage entrance.
- Try closing the door a few minutes earlier or later than your usual routine during the weeks this happens, just to confirm the sun angle is the trigger.
Make small adjustments one at a time and test the door after each one. A slight tilt is usually all it takes. You don’t need to move the sensor far, just enough to point it away from that direct afternoon light.
When to Call a Professional
Most sun glare issues clear up with a simple wipe-down, a small shield, or a slight angle adjustment. But if you’ve tried these steps and the door still won’t close at the same time every day, something else may be going on. A sensor that looks fine but is actually starting to fail can act the same way glare does, so it’s easy to mix the two up.
- The door still won’t close even after you’ve shielded and re-aimed both sensors.
- The sensor light stays off, blinks steadily, or flickers even when nothing is blocking the beam.
- The problem happens at random times of day, not just in the late afternoon.
- You notice chewed, frayed, or loose wiring near either sensor.
- The door reverses or stops even when both sensors appear lined up and clean.
Any of these can point to a wiring issue, a sensor that’s reaching the end of its life, or an alignment problem that’s more than a quick fix. Trying to force a stubborn door closed, or disabling the safety sensors altogether, is never a good idea. Those sensors are there to protect your family, your car, and your pets.
If you’re a homeowner anywhere from McKinney to Plano to Prosper and this sun glare problem won’t go away, it’s worth having a trained technician take a look. A quick inspection can confirm whether it’s truly a sun angle issue or something in the sensor or wiring that needs attention.
Repairs You Can Trust
Premium Garage Door Repair has been family-owned since 1997, and we’ve seen this exact sun glare pattern play out for homeowners across McKinney and the surrounding area for years. If a small shield or a sensor adjustment doesn’t solve it, or if you’d rather have someone check it for you, we’re glad to help. We offer 24-hour service, no surprises, so you’re never left waiting with a door that won’t close. Give us a call at 972-529-6900. Repairs you can trust, from a team that’s been part of this community for almost thirty years.