10 Common Garage Door Problems and How to Fix Them
Your garage door works hundreds of times every year. Open, close, open, close.
One day, it stops working the way it should. It makes a strange noise. It does not close all the way. Or it just refuses to open at all.
Most garage door problems have a clear cause and a clear fix. In this guide, we walk you through the 10 most common garage door problems, what causes them, and what you can do about each one.
Some of these you can fix yourself in five minutes. Others need a licensed technician. We will tell you which is which.
Problem 1: The Garage Door Will Not Open at All
What is Causing It?
This is the most frustrating situation. You press the remote or the wall button, and nothing happens. The most common causes are:
- The remote battery is dead
- The opener has lost power: check if the unit is plugged in and if the circuit breaker has tripped
- The spring has broken: a broken torsion spring or extension spring means the door cannot lift
- The trolley has disconnected from the door: the red emergency release cord may have been pulled
- The opener motor or logic board has failed
What You Can Do
Start with the simplest fix first. Replace the remote battery. Check the power outlet. Look up at the springs above the door; a broken spring will have a visible gap in the coil.
If the battery is fine and the power is on, but nothing happens, disconnect the opener by pulling the red cord hanging from the trolley. Try to lift the door manually. If it lifts easily, the problem is with the opener, not the door. If it feels very heavy or will not move, the spring is likely broken.
A broken spring is not safe to fix yourself. Call a technician. Do not keep pressing the remote or trying to force the door open. Read our garage door spring repair service page for more information.
Problem 2: The Garage Door Will Not Close
What is Causing It?
A door that opens but refuses to close is almost always a sensor problem. Modern garage doors have two safety sensors near the bottom of the tracks, one on each side. If these sensors are blocked, dirty, or out of alignment, the door will not close.
Other causes include:
- Something is blocking the sensor beam: a leaf, a cobweb, or a piece of dirt
- A misaligned sensor, the two sensors are not facing each other correctly
- A faulty sensor that needs replacing
- The door limit setting on the opener is set incorrectly
What You Can Do
Look at the two sensor boxes at the bottom of your door tracks. One sends a beam, the other receives it. Both should have a steady light, usually green or amber. If one light is flashing or off, the sensors are not aligned.
Wipe the sensor lenses with a dry cloth. Clear anything in the path of the beam. Then check that both sensors are pointing directly at each other. Loosen the wing nut, adjust the sensor until the light becomes steady, and tighten it again.
If the lights are steady but the door still will not close, the limit switch inside the opener may need adjusting. This is usually a small dial or screw on the back of the opener unit. Check your opener manual for how to adjust it.
If none of this works, the sensor itself may have failed and needs replacing. Call a technician for this.
Problem 3: The Garage Door Makes a Loud Noise When Opening or Closing
What is Causing It?
Noise from a garage door is one of the most common complaints. The type of noise usually tells you what is wrong.
- Grinding or scraping: rollers are worn out, or the door is rubbing against the track
- Banging or popping: the springs are under uneven tension and need adjustment
- Squeaking or squealing: the rollers, hinges, or tracks need lubrication
- Rattling: loose nuts and bolts on the door panels, hinges, or track brackets
- Loud clunking at the top: the torsion spring is failing and may be close to snapping
What You Can Do
Start by tightening all visible nuts and bolts on the door. Use a socket wrench and go around every bracket, hinge, and track support. Do not overtighten, just snug them up.
Next, lubricate the moving parts. Use a silicone-based or lithium-based garage door lubricant. Spray the rollers, hinges, tracks, and the spring coils. Do not use WD-40; it evaporates too quickly and leaves residue.
If the noise is a deep grinding sound or a loud clunk at the top of the door, the spring or rollers may be worn. Worn nylon rollers can be replaced. Spring adjustment and replacement must be done by a professional.
Problem 4: The Garage Door Remote Is Not Working
What is Causing It?
A remote that stops working is annoying, but it is usually a simple fix. The most common causes are:
- Dead battery in the remote
- The remote has lost its programming and needs to be re-paired with the opener
- You are out of range; most remotes work within 5 to 10 metres of the opener
- Something is blocking the antenna on the opener, a metal shelf, a car roof, or interference from another device
- The receiver inside the opener has failed
What You Can Do
Replace the battery first. This fixes the problem in most cases. Use the correct battery type, and check the back of the remote.
If a new battery does not help, try reprogramming the remote. Hold the learn button on the opener unit until the light flashes. Then press the button on your remote until the opener light blinks. The remote is now paired.
Check that the antenna wire hanging from the opener is not bent or cut. If you have a metal shelf directly above the opener, it may be blocking the signal. Try operating the remote from directly below the unit.
If none of this works, the receiver board inside the opener may have failed. This needs a technician to diagnose and repair. Read our garage door opener repair page for more details on opener faults.
Problem 5: The Garage Door Is Stuck Halfway
What is Causing It?
A door that opens part of the way and then stops is usually caused by one of these:
- An obstruction in the track, such as a small stone, a bent section, or a build-up of dirt
- A worn or broken roller that has come out of the track
- The opener’s limit switches are set incorrectly, and the opener thinks the door is in the wrong position
- A broken spring that does not have enough force to lift the door fully
- The opener motor is overheating and cutting out. This happens on old or overloaded units
What You Can Do
First, check the tracks on both sides. Look for any visible bends, blockages, or debris. Clear anything you can see with your hands.
Disconnect the opener and try moving the door manually. If it stops at the same point, there is a mechanical problem with the door, likely a roller or the track. If it moves freely by hand, the problem is with the opener’s settings.
Adjusting limit switches varies by opener model. Check your manual. On most Merlin and B&D openers, there are two dials on the side of the unit labelled up and down. Turn the up dial slightly and test the door.
If the door still stops halfway and you cannot find a clear cause, call a technician. A door that drops unexpectedly halfway is a safety risk.
Problem 6: The Garage Door Opens and Then Reverses Immediately
What is Causing It?
This is a specific and very common problem. You press close, the door starts going down, and then it reverses back up on its own. This happens because:
- The down limit switch is set too far; the opener thinks the door has hit the ground before it actually has
- Something is in the path of the safety sensors, even a small leaf can trigger the reverse
- The safety sensors are misaligned and are detecting a false obstruction
- The close force setting on the opener is too sensitive
What You Can Do
Start by checking the sensors. Look at the two small boxes at the bottom of the door tracks. Both should have a steady light. If one light is blinking, the sensors are not aligned. Adjust them until both lights are steady and try again.
If the sensors are fine, the down limit may need adjusting. On most openers, there is a DOWN limit adjustment screw or dial. Turn it slightly in the direction indicated in your manual and test again. Make small adjustments, a quarter turn at a time.
If you adjust the limit and the door now hits the floor with too much force, back it off slightly. The door should close firmly but not slam.
Problem 7: The Garage Door Is Slow to Open or Close
What is Causing It?
A door that moves more slowly than it used to is a sign that something is adding resistance to the system. Common causes include:
- Worn or dry rollers are creating friction in the tracks
- Tracks that need lubrication or have debris inside them
- A spring that has weakened and lost some of its tension
- An opener motor that is ageing and losing power
- The door is out of balance; one side is heavier than the other
What You Can Do
Lubricate all moving parts first. Spray the rollers, hinges, and the full length of both tracks with a garage door lubricant. Test the door again. In many cases, a simple lubrication is all that is needed.
To check the door balance, disconnect the opener and lift the door manually to about waist height. Let go. A balanced door will stay put. If it drops quickly or shoots upward, the spring tension is off. Do not try to adjust the springs yourself. Call a technician.
If the motor itself is running slowly or sounds laboured, the opener may be nearing the end of its life. A technician can test the motor output and advise whether repair or replacement is better.
Problem 8: The Garage Door Motor Runs but the Door Does Not Move
What is Causing It?
You can hear the motor running. The opener is clearly getting power and trying to do something. But the door is not moving. This is a specific fault that tells you the motor is fine, but the drive system has failed. Common causes are:
- A broken drive gear, the plastic gear inside the opener that turns the trolley has worn out or cracked
- A stripped worm gear, the metal screw that engages the drive gear has worn smooth
- The trolley carriage has broken the part that connects the opener drive to the door arm
- The emergency release cord has been pulled, and the door is not re-engaged with the trolley
Which Problems Can You Fix Yourself and Which Need a Technician?
| You Can Fix These Yourself | Always Call a Technician |
| Replace the remote battery | Broken spring: torsion or extension |
| Clean and realign photo-eye sensors | Snapped or frayed cable |
| Lubricate rollers, hinges, and tracks | Off-track door that will not move |
| Tighten loose nuts and bolts | Broken drive gear or worm gear |
| Reprogram a remote or keypad | Faulty or failed logic board |
| Replace the bottom weather seal | Track replacement or major track damage |
| Adjust the limit switch (small turns only) | Door severely out of balance |
| Re-engage the trolley after manual release | Panel replacement on heavy doors |
The main rule is simple. If a part is under spring tension, springs, cables or drums, do not touch it. The energy stored in a garage door spring can cause a serious injury in a fraction of a second. It is not worth the risk.
When Should You Call a Garage Door Technician in Toowoomba?
Call a technician straight away if any of the following apply:
- The spring has broken: you heard a loud bang, and the door stopped working
- The door is hanging at an angle or has jumped off the track
- A cable is visibly loose, hanging, or snapped
- The door dropped suddenly, or will not stay in the open position
- The opener motor runs, but the door does not move
- The door is stuck open, and you cannot secure your home
- You tried the simple fixes above, and nothing worked
We come to you, diagnose the problem, and give you a clear price before starting any work. See all the areas we serve across Toowoomba.
Frequently Asked Questions
Why does my garage door keep reversing before it closes?
This is almost always a sensor issue. The door reverses when it thinks something is blocking its path. Check that the photo-eye sensors at the bottom of the tracks are aligned and free of dirt. If the sensors are fine, the down limit switch on the opener may need a small adjustment.
Why is my garage door opening by itself?
The most common causes are a stuck button on your remote, interference from a nearby opener on the same frequency, or a short circuit in the wall button wiring. Start by removing the remote battery. If the door stops opening on its own, replace the remote with a modern rolling code type.
Can I fix a broken garage door spring myself?
No. Garage door springs are under extreme tension. A torsion spring can store enough energy to cause a very serious injury if it releases suddenly. Spring repair and replacement must always be done by a licensed technician.
Need Help With Your Garage Door in Toowoomba?
We are a local Toowoomba team. We fix garage doors every day across the Darling Downs region.
If you have tried the simple fixes above and the problem is still there, call us. We will diagnose the fault correctly the first time and give you a clear price before we start.
We repair all major brands, including Merlin, B&D, Steel-Line, Gliderol, ATA, Centurion, Boss, and Dominator. Residential and commercial. Old doors and new ones.
Call us on 07 4518 4061. We offer same-day service across Toowoomba, Highfields, Oakey, Westbrook, Clifton, Pittsworth, Gatton, Cambooya, and all surrounding suburbs.
