Medeco Lock Rekeying Nationwide | Blackthorn Locksmith & Security

Medeco Lock Rekeying: The Los Angeles Owner’s Guide

Medeco lock rekeying in Los Angeles typically runs $85-$165 per cylinder when done on-site, and we carry the full Medeco pin kit and key blanks on every service truck across the city. Most residential and commercial Medeco rekeys are completed in 20-40 minutes per cylinder, same day. Homeowners usually discover they need a rekey after a move, a lost key, or a staff change - or when they realize their Medeco deadbolt still turns but the key they have no longer matches who should have access to the home or office.

Call (818) 390-9007

Which Medeco Models This Applies To

Medeco has produced several cylinder families over the decades, and the rekeying process differs slightly between them. The most common in Los Angeles homes and businesses are the original Medeco Biaxial series, the newer Medeco3 (M3) line, and the X4 residential cylinders. You can identify your series by the keyway shape and the markings stamped on the cylinder face - Biaxial keys have that distinctive angled cut pattern, while M3 keys carry a small “M3” stamp near the bow.

We stock pinning kits for all three on our trucks. The Biaxial and M3 cylinders use Medeco’s proprietary sidebar and angled pin system, which means a standard Schlage or Kwikset rekey kit will not work. For older Biaxial hardware still common in 1980s and 1990s Los Angeles commercial buildings, we often source OEM key blanks from authorized Medeco distributors in Vernon - aftermarket blanks exist, but we’ve seen too many jam in humid coastal climates or after years of Santa Ana dust accumulation. The M3 and X4 lines accept quality aftermarket blanks from Ilco and Jet, and we keep both options so you can choose.

One compatibility gotcha: Medeco’s X4 looks like a standard Kwikset keyway from a distance, but the internal sidebar mechanism requires a completely different pinning approach. We’ve been called to Los Angeles jobs where a previous locksmith tried to rekey an X4 with standard pins, leaving the lock half-functional. If your key has “X4” stamped on it, tell us when you call - we’ll bring the right kit.

Signs Your Medeco Lock Rekeying Is Failing

• The key turns but the bolt doesn’t retract fully. This usually means the cylinder was rekeyed with incorrect bottom pin lengths, leaving the sidebar partially engaged. The pins may look right to an inexperienced eye, but the angles are off by a few degrees.
• You need to wiggle or pull the key outward to get it to turn. This points to worn driver springs or a rekey where the top pins were not properly matched to the new key’s lift specifications. Medeco springs are calibrated to specific tensions, and generic replacements often fatigue faster in Los Angeles heat.
• The lock worked fine after rekeying but stiffened within six months. We see this in beach-adjacent neighborhoods like Venice and Playa del Rey, where salt air corrodes standard steel pins. We use nickel-silver or brass-bottom pins on coastal Medeco rekeys for this reason.
• Different keys from the same rekey set work inconsistently. This happens when a locksmith doesn’t verify all keys in the batch against the factory spacing and depth specifications. Medeco tolerances are tighter than residential-grade locks - a thousandth of an inch matters.
• The sidebar clicks or grinds during rotation. A properly rekeyed Medeco should rotate smoothly with subtle tactile feedback from the sidebar. Grinding means the angled cuts and sidebar code are mismatched, which will wear both the key and cylinder prematurely.

Replacement Cost & What’s Included

Here’s what Medeco rekeying costs in the Los Angeles market:

The range depends on cylinder accessibility, whether we need to remove the lock from the door, and if the existing pins and springs are reusable. We quote the full price on the phone before dispatching - that number matches the invoice exactly. Every rekey includes new bottom pins, driver pins, and springs as needed; lubrication with a pet-safe, graphite-free compound; and testing with all provided keys before we leave. The 365-Day Done Right Promise covers the workmanship. If the key doesn’t turn like it should, we come back and make it right.

DIY or Call Us?

Medeco rekeying is not a beginner DIY project. The angled pin system requires a specialized follower to remove the cylinder without dropping the sidebar and top pins into the door cavity. We’ve retrieved enough Medeco components from Los Angeles door frames to know how easily it goes wrong. The pinning itself demands a magnified visor, a calibrated depth gauge, and the specific angle combinations - not just standard up-and-down pin lengths.

What you can safely check: confirm your key is a genuine Medeco blank (look for the name stamped on the bow), verify the cylinder model marking, and photograph any numbers on the key or lock face before calling. That saves us both time. What you should not attempt: removing the cylinder with a screwdriver, buying a generic rekey kit online, or forcing a stuck key - the sidebar mechanism is precise, and a damaged cylinder often requires full replacement at three times the rekey cost.

If you’re in Los Angeles and need it done today, call us at (818) 390-9007. We’ll walk through what you’re seeing, confirm the model, and give you the exact price before we head out.

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