How to Align the Garage Door Sensors in Austin TX Complete 2026 Expert Guide
If your garage door won't close — it starts down then reverses — the photo-eye sensors are almost always the cause, and aligning them is usually a five-minute fix. Each sensor near the floor has an LED; when both glow steady (not blinking), they're aligned and the door will close. Here's how to get them there.
Step 1: Clean the lenses
Dust, spider webs, and Austin pollen on the little lenses are the #1 cause. Wipe both gently with a dry, soft cloth. Sometimes that alone fixes it.
Step 2: Check the LEDs
Look at the two sensors mounted a few inches off the floor on each side of the door. One sends a beam, the other receives it. A steady light on both means aligned. A blinking or off light means they're not pointed at each other (or there's a wiring issue).
Step 3: Aim them at each other
Loosen the wing nut or bracket and gently tilt the blinking sensor up/down and side to side until its LED goes steady. They need a clear line of sight — make sure nothing (a trash can, a bike, a cobweb) is breaking the beam, and that both sit at the same height. Re-tighten once both are solid.
Step 4: Test the door
Try closing it. If it goes all the way down and the safety reverse still works (wave something through the beam — it should stop), you're done.
When it's not just alignment
If the LEDs won't stay steady no matter how you aim them, the problem is usually a damaged wire (chewed, pinched, or corroded), a failed sensor, or a loose connection at the opener. Those need a quick service call rather than more fiddling — and a door that won't close is a security issue worth fixing same-day.
Garage door sensor alignment — FAQs
Why does my door reverse right before closing?
The safety sensors think something is in the way — usually because they're misaligned, dirty, or the beam is blocked. Clean and realign them so both LEDs glow steady.
One sensor light is blinking — what does that mean?
A blinking light means the two sensors aren't aimed at each other or the beam is broken. Gently re-aim the blinking one until it's steady, and clear anything in the path.
I cleaned and aligned them and it still won't close.
Then it's likely a damaged wire, a failed sensor, or a loose connection — a quick service call. Call (737) 347-1246.
Can I just bypass the sensors?
No — they're the safety system that stops the door on a car, pet, or person. Bypassing them is dangerous and not code-compliant. Fix the alignment or replace the faulty part instead.
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Sensors fighting you? Call Edge Garage Doors at (737) 347-1246 — a door that won't close is one of our quickest same-day fixes.