Medeco Lock Rekeying Nationwide | Preston Locksmith & Security

Medeco Lock Rekeying: The Los Angeles Owner’s Guide

Rekeying a Medeco lock in Los Angeles typically runs $35 to $65 per cylinder for the labor, plus the cost of new keys and any replacement pins or parts, and most jobs are finished the same day we arrive. Rekeying means swapping the internal pins and springs inside the cylinder so your existing keys stop working and a new set takes over, without replacing the lock body or hardware. Homeowners usually discover they need this when a key breaks off in the cylinder, a roommate or tenant moves out, or a contractor who had a key suddenly feels less trustworthy than they did last Tuesday.

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Medeco locks are some of the most precise high-security cylinders you can put on a door, and that precision is exactly why rekeying them right matters. Kevin Yoon has been working on Medeco hardware across Los Angeles for years, and the difference between a Medeco rekey and a standard Schlage or Kwikset rekey comes down to tighter tolerances and angled pin cuts. Get it wrong and the new key sticks, binds, or refuses to turn in weather that swings from June Gloom damp to Santa Ana dry heat in the same week.

Which Medeco Models This Applies To

Our Los Angeles rekeying service covers the Medeco lines you are most likely to have in your door: the classic Medeco Original, the Medeco Biaxial, the Medeco M3, and the Medeco X4 series found on newer commercial and high-end residential hardware. Each generation uses a slightly different pin system, so a cylinder from a 1990s condo in Koreatown is not a drop-in match for pins from a brand-new M3 cylinder on a Silver Lake bungalow. The easiest way to identify what you have is to look at the face of the cylinder or the bow of your key: Original and Biaxial keys are usually stamped with the Medeco name and a serial number; M3 keys carry the distinctive triangle logo; X4 keys have a wider, more sculpted bow.

One compatibility gotcha we see regularly: Medeco keyways are restricted, meaning the blank profile is not available at a hardware store. If you lost all your keys, you cannot just get a copy cut from a photo or a code printed on a tag unless you have the security card Medeco issued with the system. If you have one working key, we can rekey the cylinder to new keys without touching the restricted keyway profile. If you have no working keys and no card, we can still usually decode and rekey the cylinder on site, but it takes longer and costs more than a standard rekey. That is the Medeco difference, and it is why you want a locksmith trained on Medeco specifically rather than someone who only carries Kwikset pins.

Signs Your Medeco Lock Rekeying Is Failing

• The new key goes in but will not turn smoothly. This usually means a pin was cut to the wrong depth, or a spring was pinched during reassembly. Medeco pins are angle-cut, and a pin installed with the wrong rotation will bind the cylinder.
• The key turns partway, then stops hard. A pin is catching on the shear line, often because one replacement pin is a hair too long. With standard locks, this is annoying; with Medeco, the tight tolerances make it a hard stop, not a wiggle-through.
• You can turn the key, but only with heavy pressure or a jiggle. The cylinder is fighting itself. That means a pin stack was loaded out of order or a spring is compressed against a pin that should have been swapped but was reused.
• The lock worked fine for a few weeks, then started sticking. Los Angeles air pollution leaves a fine grit on everything, and that grit gets into the cylinder. A proper Medeco rekey includes cleaning the cylinder and using the right lubricant, not a quick spray of whatever is in the truck.
• Old keys still partially work after the rekey. If you can jiggle the old key and get the cylinder to turn even a little, the rekey was incomplete. All original pins should be gone. With Medeco, partial retraction means a pin depth was misread during disassembly.

Replacement Cost & What’s Included

For a single Medeco cylinder in Los Angeles, expect $35 to $65 in labor plus $10 to $25 per key depending on the keyway and whether you need the standard Medeco blank or an M3 or X4 specific profile. A full rekey of a front door, back door, and side gate with three new keys each typically lands between $225 and $320. The spread depends on how many cylinders we are doing, whether any pins are worn past usable shape, and whether you need a new key code issued because all working keys are lost.

The phone quote is the invoice price. That is the whole point. You get a written price from the dispatcher before the truck rolls, Kevin or one of the other background-checked techs confirms it on arrival before touching a single pin, and the digital invoice matches the quote exactly. Every rekey is covered under the 365-Day Done Right Promise: if the rekey is not done right, we come back and make it right, free of charge, no argument. That guarantee is written on every invoice, not implied.

DIY or Call Us?

The honest split is this: you can inspect and prepare the lock, but you should not rekey a Medeco cylinder yourself. Checking the model, counting how many cylinders you need done, and testing whether current keys still work takes five minutes and helps you get an accurate phone quote. The rekey itself requires a pinning kit specific to Medeco, the ability to read angle-cut pins, and the right security card or code if keys are lost. A Medeco pin loaded backward or a spring seated wrong turns a $50 job into a damaged cylinder that needs replacing, and that replacement runs $150 to $400 depending on the series.

If you are in Los Angeles and want the job done without the classic bait-and-switch routine, call us at (409) 405-4485. Real price on the phone. Same price at the door. That’s it.

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