An automatic gate that opens but won't close is one of the most common service calls we get. The good news is that the cause is often simple. Sometimes it's something you can fix in a few minutes without tools.
Safety first: Never stand in the gate's path while testing it, and never bypass or disconnect safety sensors. They're there to keep people, pets and vehicles from being struck or trapped. If you're unsure about anything electrical, stop and call a professional.
1. Photo Eyes Are Blocked, Dirty or Misaligned
Photo eyes (safety beams) are the number one reason gates won't close. If the beam between the two sensors is broken, the operator assumes something is in the way and refuses to close or reverses mid-travel.
What to check: Look for overgrown plants, spider webs, leaves, mud or anything sitting in the beam's path. Wipe both lenses with a soft cloth. Most photo eyes have an indicator light that shows when they're aligned. If it's off or blinking, one may have been bumped out of position.
2. Something Is Triggering the Vehicle Loop
Many gates have vehicle-detection loops buried in the driveway. If a loop senses a vehicle, or thinks it does, it holds the gate open. A car parked too close, a trailer, or a damaged loop wire can keep the gate from closing.
What to check: Make sure nothing metal is parked or sitting over the loop area. If the gate stays open with nothing nearby, the loop or its detector may need service.
3. Dead or Weak Backup Batteries
Most gate systems run on battery backup during outages. After a storm or power loss, or once batteries simply age out (often every few years), the gate may open but lack the power to close, or it may move slowly and stop.
What to check: Has there been a recent power outage? Is the gate moving slower than usual? Weak batteries are a common, inexpensive fix.
4. The Manual Release Is Engaged
Gate operators have a manual release so the gate can be pushed open by hand during a power outage. If someone used it and didn't re-engage it, the motor runs but the gate doesn't move.
What to check: Check the release lever or key on the operator, following your owner's manual, and make sure it's locked back in the operating position.
5. Remote or Keypad Problems
Sometimes the gate is fine and the problem is the signal. Dead remote batteries, a remote that's lost its programming, or a failing keypad can all look like a gate problem.
What to check: Try a second remote, the keypad, or the button inside the control box. If one works and another doesn't, the problem is the device, not the gate.
6. Track, Roller or Hinge Problems
On slide gates, gravel, mulch, ice or debris in the track can stop the gate. On swing gates, worn or sagging hinges can make the gate drag on the ground. Either way, the operator senses resistance and stops to protect itself.
What to check: Clear any debris from the track. If the gate looks crooked, scrapes the ground or binds as it moves, it needs a technician to re-hang or adjust it.
7. Limit Settings Have Drifted
The operator's limits tell it where "fully open" and "fully closed" are. Over time, or after a repair, these settings can drift. The gate may stop short, reverse at the end of travel, or refuse to close at all.
What to do: Adjusting limits requires working inside the control box. We recommend having a trained technician do this, since incorrect settings can affect safety features.
8. Control Board or Electrical Damage
Tennessee storms are hard on gates. Lightning surges and power spikes can damage control boards, transformers and wiring. Rodents and insects nesting in control boxes cause problems too. Electrical issues usually show up as a gate that acts unpredictably or stops working entirely.
What to do: If the gate stopped working after a storm, or you see error codes, burnt smells or damaged wiring, call a technician. Don't try to repair the board yourself.
Quick Troubleshooting Checklist
- Clear anything blocking the photo eyes and wipe the lenses.
- Make sure nothing is parked over the driveway loop.
- Confirm the manual release is engaged.
- Try a different remote or the keypad.
- Clear debris from the track (slide gates).
- Turn power off for one minute and back on to reset the operator, following your manual.
If none of these solve it, it's time for a professional diagnosis.
When to Call a Gate Technician
Call for service if the gate is grinding, overheating, moving erratically, sagging, showing error codes, or if it stopped working after a storm. Our trucks are stocked with diagnostic equipment and common parts for most major brands, so many repairs can be done in one visit. Learn more about our gate repair service.
Prevent the next breakdown. Most of the problems above can be caught early with routine maintenance: battery testing, sensor alignment, lubrication and limit checks. Ask us about a maintenance plan.
Frequently Asked Questions
Can I bypass my gate's safety sensors?
No. Safety sensors protect people, pets and vehicles from being struck or trapped by the gate. Bypassing them is dangerous and can create serious liability. If a sensor is faulty, have it repaired or replaced.
Do you repair gates you didn't install?
Yes. We service all major gate brands, including LiftMaster, FAAC, Viking Access, USAutomatic, DoorKing, Apollo, HySecurity and others, regardless of who installed the system.
Do you offer emergency gate repair?
Yes. Emergency calls receive priority dispatch (an upcharge applies). Call (615) 799-6115.