LiftMaster Gate Motor Replacement Nationwide

LiftMaster Gate Motor Replacement: The Inglewood Owner’s Guide

A LiftMaster gate motor replacement in Inglewood typically runs between $850 and $1,600 installed, depending on the model and whether the arm, receiver, or control board needs swapping alongside it. Most replacements are completed in a single visit, and we stock the most common LiftMaster-compatible units on our trucks so we’re not making you wait on a parts order.

Call (747) 340-9707

Most Inglewood homeowners discover the motor has failed the hard way: the gate stops mid-swing, the opener hums but nothing moves, or the remote does nothing while the keypad still works. If you’re reading this, you’ve probably already ruled out the obvious, and you’re ready to know exactly what the fix costs and when it can be done. Here’s the full picture, written plainly.

Key takeaways:

• We service and replace LiftMaster gate motors across all Inglewood neighborhoods, from Morningside Park to Ladera Heights.
• Installed replacement pricing is settled before work begins. No surprises on the bill.
• Every replacement is covered by our written 90-Day Done Right Promise.
• Call (747) 340-9707 and a live person answers. Not a voicemail, not a phone tree.

Which LiftMaster Models This Applies To

We replace motors across the LiftMaster residential swing and slide gate lines: the LA400, LA412, LA500, the older SL3000 series, and the heavier LA500XL for oversized or sloping driveway gates. If your opener has a LiftMaster label but you can’t find the model number, check the inside of the control box cover. The data plate is usually there, and it lists voltage, horsepower, and the production date code, which tells us which revision you have.

One compatibility gotcha that trips up a lot of Inglewood homeowners: an LA400 motor will not drop into an LA500 chassis. The mounting bolt pattern, capacitor orientation, and limit switch wiring all differ. We see this most often when someone bought a “deal” motor online and then calls us after a frustrating weekend. The model number matters more than the brand sticker.

When you call, have the model number and a photo of the control board ready if you can. We carry OEM LiftMaster replacements along with quality aftermarket equivalents that match or exceed the OEM spec for residential use. On LA400 and LA412 units, the aftermarket motors we carry are rated for the same duty cycle and come with the same capacitor values, so you’re not giving anything up. On larger estate gates, we recommend OEM unless the aftermarket option is a known commercial-grade unit.

We also carry motors and parts for Mighty Mule, Ghost Controls, and DoorKing, though this page is specifically for LiftMaster. We are an independent service provider, not affiliated with LiftMaster.

Signs Your LiftMaster Gate Motor Replacement Is Failing

• The motor hums but the gate does not move. The capacitor has typically failed or the motor windings are burned. The hum is the motor trying to start against a load it can no longer turn. Capacitor failure is the most common failure we see on Inglewood gates, especially those that cycle dozens of times a day.
• The gate opens halfway and reverses or stops. This usually means the current sensing circuit is tripping because the motor is drawing more amperage than it should. It is working harder than it was designed to, and that extra strain shortens the remaining life quickly.
• The motor runs but the gate creeps or moves slower than it used to. Worn brushes or a failing gear reduction inside the motor housing. In coastal-adjacent Inglewood air, moisture gets into the housing faster than it does inland, accelerating this wear.
• The opener trips its breaker or GFCI repeatedly. Short in the windings or a failing start capacitor drawing too much on startup. Do not keep resetting it. That is the motor telling you it is done.
• The gate works only when the temperature is cool. Thermal overload inside the motor trips in heat. Inglewood summers push older LiftMaster motors past their limit, and once this starts, it gets worse every season.

Replacement Cost & What’s Included

Here is what a LiftMaster gate motor replacement in Inglewood costs, installed by Ironworks Gate Co.:

• LA400 / LA412 residential swing motor replacement: $850-$1,100 installed
• LA500 residential/light commercial swing replacement: $1,100-$1,400 installed
• LA500XL or heavy slide gate motor replacement: $1,300-$1,600 installed
• Capacitor-only replacement (if the motor is still sound): $95-$180, often done in the same visit

The price includes the motor, removal of the old unit, installation, wiring verification, limit adjustment, and a full cycle test. If the control board, receiver, or arm needs replacement at the same time, we tell you before any work begins and the quote adjusts accordingly. The price we agree on is the price you pay. Not a dollar more.

Every replacement carries our 90-Day Done Right Promise. If the motor does not perform correctly within 90 days, we come back and make it right. No forms, no runaround. That is the whole promise.

DIY or Call Us?

A LiftMaster gate motor is a 120-volt (sometimes 240-volt on large estates) electrical component wired into a moving metal gate. The electrical side is hazardous, but the real danger is the gate itself. A gate under tension, even with the opener removed, can swing hard and crush fingers, hands, or worse. If you are not familiar with low-voltage limit wiring, capacitor discharge, and proper arm geometry, this is not a weekend project. We say that plainly because we have been called out too many times to fix the aftermath of a careful-sounding YouTube tutorial.

What you can safely do: check that the breaker is on, check that the manual release lever works, and note exactly what the motor does when you press the remote. That information helps us diagnose faster when we arrive. Leave the wiring, the capacitor, and the arm alone.

If you are in Inglewood and your LiftMaster opener is failing, call (747) 340-9707. We will be there when we say.

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