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Mighty Mule Keypad & Intercom Repair: The Fort Worth Owner’s Guide
We stock Mighty Mule-compatible keypads and intercom modules on the truck, and a typical keypad or intercom swap in Fort Worth runs $185 to $340 installed, parts included. Most calls come in as a keypad that stopped accepting the PIN, an intercom that buzzes but won’t open the gate, or a keypad that works intermittently after rain. The failure pattern is usually consistent: the keypad membrane delaminates, or the intercom’s relay contacts corrode after a few Texas storm seasons.
Here’s the part most owners don’t see coming: Mighty Mule changed its keypad wiring across model generations, and a keypad that fits an FM500 won’t necessarily talk to an MM560 or an R4050 without a jumper change or a different harness. We match the part to the control board in front of you, not to the brand name on the housing. Before we quote anything, we check the board revision and the existing wiring photo record so the replacement actually pairs on the first visit.
Key takeaways:
- Installed Mighty Mule keypad or intercom replacement in Fort Worth typically runs $185-$340.
- We carry OEM Mighty Mule and quality aftermarket equivalents for most FM, MM, and RB series models.
- Same-day repair is usually possible; we dispatch across Fort Worth with keypads and intercom parts stocked.
- Every job gets a written price before work starts and a photo record when we leave.
Which Mighty Mule Models This Applies To
We service keypads and intercoms across the Mighty Mule lines most common on Fort Worth properties: the FM series (FM200, FM350, FM500, FM502), the MM series (MM260, MM360, MM371, MM560, MM571), and the RB / R series gate openers that often pair with the MMTKP keypad or the Mighty Mule Wireless Intercom (MM136, MM138, and later revisions). The compatibility hitch that trips up most owners: Mighty Mule keypads shipped with different connector types over the years. The older FM keypads use a modular phone-style jack; some MM-series boards moved to screw terminals; the MMTKP and the newer illuminated keypads use yet another pinout.
Adrian Vance has pulled apart enough of these to know the giveaway: if your keypad’s plug has four conductors in a flat clip, you’re on the older harness. If it’s five wires with a screw-down block, you’re on a newer revision. We don’t guess. We verify the board revision, match the part number, and photograph the label before we order or install anything.
On OEM versus aftermarket: genuine Mighty Mule parts are the safe default for the intercom modules, where the audio circuitry and relay timing are tuned to Mighty Mule’s boards. For keypads, quality aftermarket equivalents that clone the OEM pinout and voltage spec often hold up better in Texas heat than the original membrane pad, because several aftermarket makers switched to a harder UV-stabilized faceplate. We’ll tell you which is which and quote both options in writing. Vance Gate Repair is an independent service provider, not affiliated with Mighty Mule, and we also stock parts for LiftMaster, Ghost Controls, and DoorKing when a Fort Worth property has mixed-brand access setups.
Signs Your Mighty Mule Keypad & Intercom Repair Is Failing

- Keypad accepts the PIN but the gate doesn’t move. This usually means the keypad’s relay output is fine but the control board isn’t reading it. The cause is often a corroded terminal or a broken conductor at the hinge point of the keypad harness. We trace the conductor, not just the voltage.
- Keypad works right after a rain, then dies within a day. Moisture is getting past the faceplate gasket. Mighty Mule keypads are rated for outdoor use, but the silicone gasket degrades under Texas UV exposure, and once water wicks into the membrane, the contact grid shorts intermittently. This is a replacement, not a cleaning job.
- Intercom rings the house unit, but the voice path is dead or crackling. The microphone element or the speaker driver has failed. On the older MM136/MM138, the issue is often a cold solder joint on the audio board after years of thermal cycling in a metal gate post.
- Keypad does not respond at all, no backlight, no beep. The control board has lost the keypad’s 12V feed, or the keypad’s internal regulator has died. We test the board terminals first; if the board is good, the keypad itself is the culprit.
- Some buttons work, others don’t, and the code sometimes accepts and sometimes rejects. The membrane’s carbon contacts have worn unevenly. One dead digit can brick a PIN that includes that number. This is the most common call we get from the Westover Hills area, where keypads sit in direct sun for hours a day.
Before
AfterReplacement Cost & What’s Included
In Fort Worth, a Mighty Mule keypad replacement with labor typically runs $185 to $260, and a wireless intercom module replacement runs $240 to $340 installed. What drives the spread is whether we’re matching an OEM Mighty Mule part or a higher-spec aftermarket equivalent, and whether the existing wiring can be reused or needs a new harness run through the gate post. We show you the part price and the labor as separate line items, and the total is written down before we turn a screw.
- Mighty Mule keypad (OEM): $85-$140 part cost, depending on series and whether the harness is included.
- Quality aftermarket keypad, matched to your board: $60-$110 part cost.
- Wireless intercom module (Mighty Mule or compatible), paired to your board: $120-$180 part cost.
- Labor, on-site diagnosis, pairing, and programming: $100-$160 flat, depending on access and wiring condition.
Every keypad or intercom repair we do in Fort Worth is covered by our 365-Day Done Right Promise: if the part or the installation isn’t right, we make it right within one full year, no charge, no argument. Under Haven Standard Clause 1, the price you see on the written scope is the price you pay, and under Clause 4, you get a photographed record of what we found, what we replaced, and how the new part is set up before we leave your driveway.
DIY or Call Us?

There are exactly three things an owner can safely check before calling us: confirm the keypad hasn’t been physically damaged by a lawn mower or a hard freeze, confirm the gate operator’s breaker isn’t tripped, and confirm the intercom’s house unit still has power and isn’t muted. Everything beyond that involves working with low-voltage wiring on a board that’s often mounted inside a metal enclosure with line-voltage nearby, and that’s where we draw the line for a homeowner.
Mighty Mule keypads and intercoms run on 12V DC, which is not lethal, but the control board they plug into shares a housing with 120V or 240V wiring on most Fort Worth installs. One crossed terminal or a mis-wired harness can take out the board, the transformer, or both, and that turns a $250 keypad repair into a $600 board replacement. And on gate systems, a mis-paired intercom or keypad can leave the gate in an open state, which defeats the security of the property. If you’ve already opened the box and you’re not sure what you’re looking at, set it down and call us at (817) 476-9945. The diagnostic visit costs the same as the repair call, and we’ll tell you in writing what’s actually wrong before anything gets replaced.
FAQs
In our experience across Fort Worth, a Mighty Mule keypad lasts 4 to 7 years before the membrane faceplate degrades or the harness contacts corrode. Installations that face west or south take the most UV exposure, and we see earlier failures there. The intercom modules typically last 6 to 9 years before the audio path or relay contacts start to fail. The number that matters most is the weather-sealing at the base of the keypad; that’s where Texas heat and rain cycles do their damage first.
Almost never, and when we can repair one, we’ll tell you. The failure is usually inside the sealed membrane assembly or the micro-switch matrix, and neither is economically repairable. Intercom modules can sometimes be brought back with a re-solder on the audio board, and if that’s the case, we’ll quote the repair in writing at less than replacement cost. If we recommend a new part, it’s because the old part is dead, not because it’s easier for us.
Most Mighty Mule keypad replacements in Fort Worth are done in 45 to 90 minutes. A wireless intercom module replacement, including pairing and range testing at the house unit, typically runs 60 to 120 minutes. When we arrive, we’ll tell you how long this particular job will take and we’ll stick to it.
Yes. We carry Mighty Mule keypads for the FM, MM, and RB series, plus matched aftermarket equivalents and the common wireless intercom modules, on the truck when we dispatch across Fort Worth. If your board revision requires a part we don’t have on board that day, we order it and return within one to two business days to complete the install. Call (817) 476-9945 and tell the person who answers what model gate opener you have; we’ll confirm the part before the truck rolls.
Call Vance Gate Repair in Fort Worth

If your Mighty Mule keypad or intercom is failing, call (817) 476-9945. A live person answers around the clock, and you’ll get a straight answer on whether your part is a match for what we carry, what it costs, and when we can be there. The estimate is free, the price is written before any work begins, and the job ends with a photo record of exactly what was done. Name what you found. Name what it costs. Name what you left behind. That’s how we’ve run every gate repair in Fort Worth since Adrian Vance started this company in 2014, and it’s how your keypad or intercom job will run too.
Written by Adrian Vance, Owner, Vance Gate Repair Fort Worth at Vance Gate Repair Fort Worth, serving Fort Worth and nearby areas.





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