Free on-site gate assessment - hinges, posts, and your LiftMaster or Nice gate operator checked before anything is quoted
The assessment is free and the quote is the invoice.
Mighty Mule Gate Motor & Opener in Arlington: What to Know First
Mighty Mule gate motor and opener service in Arlington runs $185 to $640 for most repairs, with full replacement jobs typically landing between $850 and $1,900 depending on the model and whether we’re reusing your existing brackets. We’re an independent Mighty Mule service provider, not a factory warranty center, which means we fix the opener you already own instead of pushing you toward a full system swap. Turnaround is usually same-day for repair calls inside Arlington, and the price is quoted and agreed in writing before we touch a single bolt.
This page is for homeowners in Arlington, Pantego, Dalworthington Gardens, and the neighborhoods south of I-20 who have a Mighty Mule opener acting up, beeping, or refusing to move. If that’s you, call (817) 241-4067 and a live person answers. That person is either Hal or someone standing in the same shop, not a recording.
How Mighty Mule Products Fail - and How We Fix Them
Mighty Mule openers are sold more through farm and ranch stores and online than through specialty gate shops, which means a lot of Arlington installs were done by a handyman or a well-meaning neighbor. That shows up later, and we see the same failures repeat across Arlington driveways and pasture gates. Here’s what actually goes wrong:
- FM series control board failures after storms. The FM350 and FM500 are the two we see most in Arlington, and their boards are sensitive to the power flickers and lightning that come with spring storms. The opener goes dead or the remote stops pairing. Sometimes it’s just a blown fuse on the board; sometimes the transformer took the hit. We test the board, not just the arm, because half the time the motor is fine and the board is toast.
- MM series actuator arm shearing at the clevis pin. On the heavier MM571W and dual-gate setups, the clevis pin where the arm meets the gate bracket wears into an oval, then snaps. The gate still moves but clunks, or it starts and stalls. We replace the pin with a hardened one and check whether the gate was over-traveling at the stops, because that’s what eats the pin in the first place.
- Battery backup systems going flat after two years. Mighty Mule’s battery tray is not sealed, so fine Texas dust and a bit of moisture work into the connections. The opener tests fine on AC power but dies the moment the cord is pulled. Arlington owners with automatic gates forget these batteries are rated for about two years of real use, not five. We clean the terminals, replace the battery with a quality aftermarket unit when the OEM is priced like it’s made of gold, and show you how to test it seasonally.
- Remote and keypad range shrinking to ten feet. The single-button and two-button remotes that ship with Mighty Mule kits use a small receiver antenna tucked behind the control box. In Arlington, where a lot of homes have brick columns and metal roofing, that antenna gets blocked or the receiver drifts off frequency. Riders end up waiting at the street. We relocate or extend the antenna, and if the receiver itself is drifting, we replace it with an aftermarket unit that pairs with your existing remotes.
- Gate sag dragging the motor into an early grave. Here’s the one Mighty Mule’s own support docs won’t tell you. In Arlington, the soil under gate posts is gumbo clay that swells and shrinks with every wet and dry cycle. That works the post a quarter inch at a time until the gate sags and the opener has to push uphill. We see Mighty Mule motors burned out at the gearbox because the gate itself was an inch out of level. We fix the hinge post and the sag first, then the motor. A new opener on a sagging gate is a donation to the scrap pile.
Our Mighty Mule Gate Motor & Opener Process
You call. A person answers. Then here’s how the job goes when we roll up to your Arlington driveway:
- 1
We listen to the opener run - or not run. The sound tells us more than the blinking light code. A laboring motor, a clicking relay, a buzzing but dead board each point a different direction before we open the cover.
- 2
We test from the gate, not the control box. That means checking post plumb, hinge wear, chain or arm tension, and gate level. A Mighty Mule motor is the canary, not always the coal mine.
- 3
We show you what we found and quote the fix. You get one number, written, before any work starts. If the fix is a $40 part swap, that’s what you pay. We don’t invent a bigger job because the truck is already there.
- 4
We make the repair with the right part. Where the OEM part makes sense, we use it. Where a quality aftermarket part does the same job for half the price and won’t void anything, we tell you and let you choose.
- 5
We run a full cycle test on obstruction and force settings. Mighty Mule openers have auto-reverse settings that get ignored or maxed out by well-meaning installers. We check that a kid on a bike at the gate would stop the motor, not get pushed.
- 6
We clean up and hand you the 90-Day Done Right Promise in writing. If it acts up within 90 days, Hal comes back. No runaround, no re-diagnosis fee.
What Mighty Mule Gate Motor & Opener Costs in Arlington
Here’s the straight answer on what Arlington Mighty Mule work runs, based on the jobs we’ve done across town in Pantego, southwest Arlington, and the Dalworthington Gardens area:
- Control board replacement: $185 - $360
- Actuator arm or clevis pin repair: $95 - $240
- Remote or keypad receiver replacement: $110 - $275
- Battery backup replacement and terminal service: $160 - $330
- Full opener replacement (motor, board, arms): $850 - $1,900
What moves the price is the model, whether the brackets and chain are reusable, and how far the gate has sagged before we got there. Every job includes a free written estimate before the work starts, $40 off any repair over $200, and no trip charge inside the county. Call (817) 241-4067 and you’ll get the real number for your exact opener, not a ballpark from a chat window.
Why Arlington Homeowners Call Gatewood Fence & Gate for Mighty Mule Work
We’ve been fixing gates around Arlington since 2001. Hal Gatewood grew up near Pantego and took welding and metal fabrication at Tarrant County College before a gate motor ever earned him a dollar. His name is on the shop, the address is published, and the license number is there for anyone to look up. When we say a repair is done, it’s done, and it’s backed by a 90-Day Done Right Promise stamped on every invoice.
We also service the other big names - LiftMaster, Ghost Controls, and DoorKing among them - so if you move from a Mighty Mule to a different brand down the road, you don’t need to find a new shop. But the honest reason Arlington folks keep calling us for Mighty Mule work is that we fix the opener in your driveway, weld the bracket on site if it’s cracked, and don’t hand you a quote from a binder that changes when we walk to the truck. The price we agree on is the price you pay.
FAQs
No. As long as we’re using compatible parts and following the manufacturer’s install practices, your Mighty Mule warranty stays intact for the components under coverage. We’re an independent Mighty Mule service provider and we’re careful about what goes on your opener because we’d rather fix it once than explain why we cut a corner that voided your coverage.
OEM Mighty Mule parts are stocked at several suppliers we buy from weekly in the DFW area, so we can usually have the right board, arm, or battery in hand the same day. When an OEM part is backordered, we source a quality aftermarket equivalent and tell you exactly what the trade-off is before we install it. Call (817) 241-4067 and we’ll tell you if your part is available today.
If the motor and gearbox are still smooth and the board is the problem, repair makes more sense than replacement; you’ll spend $200 to $400 instead of $850 plus. We recommend replacing when the gearbox is grinding, the arm is bent, and the board is overcooking all at once, because fixing those one at a time costs more over two years than doing it right once. We’ll show you the numbers and let you choose.
Most repair calls inside Arlington are same-day, and gates that are stuck open or stuck shut get priority. We’re a local, owner-operated shop with no dispatch queue and no national routing, so the person who answers the phone knows where Arlington is and how long it takes to get to Matlock or Sublett. Call (817) 241-4067 and we’ll give you a real arrival window.
Yes. We service all three brands and many others, so if you want to move away from Mighty Mule, we’ll run a new opener from LiftMaster, Ghost Controls, or DoorKing while reusing what’s still good from your existing setup. We’ll quote the full swap upfront so the number doesn’t surprise you at the door.
Written by Hal Gatewood, Owner, Gatewood Fence & Gate at Gatewood Fence & Gate, serving Arlington and nearby areas.





Before
After
Before
After
Before
After