Non-destructive entry first, always - and we re-key Schlage, Kwikset, and Baldwin locks on the spot while you watch
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Medeco Locksmith in San Bernardino, CA | Preston Locksmith & Security
Lost a Medeco key or dealing with a cylinder that’s starting to stick? We provide independent Medeco locksmith service across San Bernardino, from rekeying restricted cylinders to full replacements, and we’re the shop local property managers call when a lost key threatens their master system. Two things make our Medeco work here different: we stock genuine Medeco parts locally, and we quote the full price on the phone before anyone rolls a truck. That price is what you pay at the door. Call (409) 405-4485 and we’ll tell you what it costs to fix your specific lock.
Why San Bernardino Residents Choose Us for Medeco Service
Medeco isn’t a side hobby for us. We’ve worked on Medeco high-security cylinders for years because they’re the dominant lock in San Bernardino’s commercial and institutional buildings, not because Medeco endorses us. That’s worth saying plainly: Preston Locksmith & Security is an independent Medeco service provider. We’re not manufacturer-authorized, and we don’t pretend to be. What we are is trained on Medeco’s restricted keyway systems and hardware, from the original Medeco deadbolt to the Maxum line and Biaxial and Medeco³ cylinders.
Kevin Yoon, our owner, came up through the vocational program at Los Angeles Trade-Technical College before ever touching a customer’s door. Since then he’s built the shop around one rule: tell people the real number upfront. His mother got burned by a bait-and-switch locksmith years ago, quoted one price on the phone and handed a much bigger bill at the door. That doesn’t happen here. Real price on the phone. Same price at the door. That’s it.
For San Bernardino specifically, we carry Medeco sales & service parts on the truck, so a rekey or sidebar kit doesn’t turn into a week-long wait for shipping.
Common Medeco Locksmith Problems We Solve in San Bernardino
- Keys that stick or won’t turn past 90 degrees. San Bernardino’s dry, dusty air is rough on Medeco cylinders. Fine grit works into the keyway and abrades the sidebar, which is exactly the part that makes a Medeco a Medeco. We see this most on exterior doors along E Street and in older downtown buildings where foot traffic tracks dust straight into the lock.
- Keys that spin without engaging the bolt. That’s usually a broken sidebar or worn sidebar springs in a Biaxial cylinder. After years of heavy commercial use, the springs fatigue and the key loses its bite. We can rebuild these with a new sidebar kit when the cylinder housing is still sound.
- Lost or stolen restricted keys. This is the big one in San Bernardino. Medeco keys can’t be duplicated without authorization, so a missing key often means replacing the cylinder, not just rekeying. We handle this more often here than in neighboring cities because of the volume of older master-keyed buildings, and we’ll walk you through what can be saved versus what needs replacing.
- Corroded or seized cylinders on exterior doors. San Bernardino’s summer heat cycling plus the occasional winter rain is hard on hardened steel bolts and housings, especially on older buildings where weatherstripping failed years ago. Sometimes it’s a clean-and-lube. Sometimes the cylinder’s toast.
- Adding Medeco to an existing door. Homeowners in San Bernardino increasingly want a Medeco Maxum deadbolt on a door that currently has a builder-grade Schlage or Kwikset. We do that install and match the cylinder to your existing key system when possible.
Medeco Service in San Bernardino: What Local Conditions Mean for Your Equipment
San Bernardino has a large stock of mid-century commercial buildings and institutions concentrated downtown and along the E Street corridor, many of which still run Medeco master-keyed systems for suite and building-wide access. These systems use restricted keyways, which means a single lost key can force a building-wide cylinder replacement. A property manager on E Street called us after a tenant lost a Medeco Biaxial key to a suite in a 1960s office building. Because the key was restricted, we couldn’t just duplicate a replacement without authorization. We rekeyed the affected cylinders, issued new restricted keys while preserving the existing master key system, replaced the worn sidebar springs, and tested every key in the building’s master ring. The building was back to full key control the same afternoon. That job happens all the time in San Bernardino’s older commercial core, and it’s a very different problem from what you’d see in a city with newer construction where every lock is a standard Schlage cylinder.
Medeco Models & Products We Service in San Bernardino
We stock and service the full Medeco lineup that shows up in San Bernardino: the Medeco Maxum deadbolt, the original Medeco deadbolt, Biaxial and Medeco³ cylinders, and Medeco KeyMark for commercial and light-commercial applications. When a cylinder can be rebuilt, we use genuine Medeco OEM cylinders, keys, and sidebar parts to preserve the lock’s UL 437 rating and key control. We only substitute high-quality aftermarket hardware for non-security-critical components. And when a Medeco cylinder is too far gone, we’ll tell you straight whether a new sidebar kit will save it or whether a new Medeco unit is cheaper and safer. No pressure either way.
Medeco Service Pricing in San Bernardino
Serving San Bernardino, CA - Our Local Coverage Area
We’re based in the San Bernardino area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – Medeco Locksmith in San Bernardino
Yes, we can rekey most Medeco cylinders without the original key, provided you own the property or are authorized to act for the property owner. We’ll verify that on site. For restricted keyways on a master system, we’ll need the key chart or the authorization card to issue new keys. Call (409) 405-4485 and we’ll tell you what documentation we need for your specific situation.
We keep a working stock of Medeco OEM cylinders, sidebar kits, and key blanks on the truck for the models that show up most in San Bernardino’s older commercial buildings, especially the Biaxial and Medeco³ systems along the E Street corridor and downtown, where our Commercial Locksmith in San Bernardino team works regularly. If we need something we don’t have on board, we source it locally and typically have it within one business day.
In San Bernardino, the most common cause is fine grit from our dry, dusty climate working into the cylinder and abrading the sidebar. It could also be worn sidebar springs if the lock has years of commercial use on it. We’ll diagnose it on site, and if it’s rebuildable, we’ll quote a sidebar kit rather than pushing a full replacement.
Yes. We install the Medeco Maxum deadbolt as an upgrade over existing Schlage or Kwikset hardware. In most cases we can key the new Medeco cylinder to match your existing keys, so you don’t end up carrying a new key for one door. It’s a common upgrade in San Bernardino neighborhoods where homeowners want key control on an exterior door.
Call us right away. Because Medeco keys are restricted and cannot be duplicated without authorization, a lost key is a security issue, not just an inconvenience. Depending on the situation, we may be able to rekey the affected cylinders, or we may recommend replacing them. On master systems, a lost key can require rekeying a larger portion of the building. We’ll walk you through the scope and price before any work starts. Call (409) 405-4485 and we’ll give you honest options.
Service Areas Near San Bernardino
We serve San Bernardino and the surrounding communities across the Inland Empire. If you need Medeco work in Fontana, Moreno Valley, or elsewhere in the region, know that Medeco service in Fontana and Medeco service in Moreno Valley are handled by our same team. For a full look at where we work, see our San Bernardino service area page.
Book Your Medeco Service in San Bernardino Today
Need a Medeco rekey, a cylinder replacement, or help with a lost restricted key? Call (409) 405-4485. A live person answers 24/7, no voicemail maze. We’ll give you a written price on the phone, a live trackable arrival time, and a lock that works right. Same-day service is available for most San Bernardino jobs.
Written by Kevin Yoon, Owner at Preston Locksmith & Security, serving San Bernardino since 2008.






