Smart locks
House lockouts
Re-keying
Deadbolt upgrades
Schlage
Kwikset
Car keys & fobsNon-destructive entry first, always - and we re-key Schlage, Kwikset, and Baldwin locks on the spot while you watch
You get a price before we start. It does not change when we arrive. No surprises.
Get your free estimateMedeco Locksmith in Los Serranos, CA | Greystone Locksmith
We’re an independent Medeco service provider handling repairs, rekeys, and new installations across Los Serranos. The thing that sets our Medeco work apart here is the ranch and equestrian hardware we see on nearly every other call. If you need a Medeco cylinder cleaned, re-pinned, or replaced on a gate, tack room, or front door, call Greystone Locksmith at (866) 497-9415 and we’ll give you a straight answer on the phone.
Why Los Serranos Residents Choose Us for Medeco Service
Medeco locks aren’t like the Kwikset or Schlage hardware you’ll find at the big-box store. The Biaxial and M3 cylinders use angled cuts and a sidebar mechanism that requires a specific touch to service properly. Our team, led by Gil Tanner, has spent years working on these systems across the Inland Empire, and we keep Medeco-specific tools and genuine replacement parts in the van. That means we can take apart a Maxum deadbolt on a Los Serranos gate post and put it back to factory spec on the same trip. You won’t hear us pushing an upgrade you don’t need. A lock is only as good as the installation behind it, and we’d rather fix the one you have than sell you a new one that’ll face the same dust and heat. For full details on the Medeco work we do, see our Medeco sales & service page.
Styles & brands we work with







Common Medeco Locksmith Problems We Solve in Los Serranos
- Dust-packed cylinders from Santa Ana winds. The precision pin chambers inside a Medeco Biaxial or M3 cylinder are tight by design. When fine dust off the 91709 hills works its way into that keyway, keys start sticking and eventually the cylinder seizes. We disassemble, clean, and re-pin rather than just spraying in lubricant that turns into grit paste.
- Heat-warped strike plates and binding deadbolts. Inland Empire summers dry out wood door frames and gate posts. The striker shifts just enough that a Medeco Maxum bolt won’t throw cleanly, and forcing it wears the hardened bolt prematurely. We realign or replace the strike and adjust the frame before the lock itself gets damaged.
- Restricted keyway clogging on gate and barn locks. Medeco’s restricted keyways are a security feature, but they leave less room for debris to escape. On Los Serranos properties where gates face dirt lanes, that keyway fills up faster than a standard suburban front-door cylinder would. Key extraction and a proper clean-out fixes it.
- Corroded cylinders in tack rooms and detached garages. Seasonal temperature swings create condensation inside uninsulated outbuildings. Medeco’s internal springs and pins, if not lubricated correctly, corrode and make the tumblers sluggish. We see this constantly on properties where the tack room hasn’t been touched in years.
- Lost or restricted keys on rekeyed locks. If you bought a Los Serranos horse property and inherited Medeco hardware, you may not have the original keys at all. We rekey without the originals, re-pin to a new restricted keyway, and give you a fresh set of keys the same day.
Medeco Service in Los Serranos: What Local Conditions Mean for Your Equipment
Los Serranos is one of the only places in the Chino Hills area where a Medeco locksmith call often starts as a house lockout and ends with us walking a dirt path to check gate and barn hardware. That’s because so many homes here sit on larger lots with equestrian facilities, detached garages, and private lanes off the 91709 grid. A Medeco Maxum on a front door gets the same heat and dust as one on a tack room, but the tack room cylinder faces a multiplier: no shade, no climate control, direct exposure to whatever the Santa Anas kick up. If you need Car Key Replacement in Los Serranos, we handle that too. We routinely find cylinders that need a full teardown and re-pinning, not just a shot of Teflon spray, because the dust has packed into the pin chambers and the heat has baked it in place. That’s maintenance a suburban deadbolt in a neighboring tract rarely demands, and it’s why we don’t treat Medeco work in Los Serranos like cookie-cutter lock work.
Medeco Models & Products We Service in Los Serranos
We work on the full Medeco lineup that shows up on Los Serranos doors: Maxum deadbolts, Biaxial cylinders, M3 and M4 high-security locks, and KeyMark interchangeable core cylinders. Our Medeco repair in Chino covers the same range. For repairs we use genuine Medeco OEM pins, springs, and cylinders whenever the system’s warranty or restricted keyway integrity calls for it. On older out-of-production lines where OEM parts are scarce, we’ll use a quality aftermarket substitute and tell you plainly what that means. What we stock locally in the van covers most common Medeco failures, so we’re not waiting on a parts house across the county to get your gate working again. New installations on detached garages, tack rooms, and main entries are all in our wheelhouse.
Medeco Service Pricing in Los Serranos
Medeco work runs higher than standard lock hardware because the parts cost more and the labor takes longer to do right. A typical service call for cleaning and re-pinning a Medeco Biaxial cylinder in Los Serranos falls between $85 and $160 depending on how far the cylinder needs to be torn down. Rekeying an existing Medeco lock to a new restricted key usually lands between $25 and $45 per cylinder. Full replacement of a Maxum deadbolt, parts included, typically runs $220 to $380. What drives the final number is the condition of the cylinder, whether you need new restricted keys cut, and whether the strike or frame needs realignment from heat warp. We quote the full price on the phone before anyone rolls out, and that’s the number on your invoice. No dispatch fee added when the tech pulls up. Call (866) 497-9415 for an exact quote on your Medeco situation.
Serving Los Serranos, CA — Our Local Coverage Area
We’re based in the Los Serranos 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 Los Serranos
Yes. We don’t need the original key to rekey a Medeco cylinder. We disassemble the lock, replace the pins to match a new restricted keyway, and cut a fresh set of keys on site. This is common when someone buys a Los Serranos horse property and inherits Medeco hardware with no keys in sight. Call (866) 497-9415 and we’ll walk you through what’s needed before the tech heads out.
Almost every time, it’s dust from Santa Ana winds packing into the precision pin chambers inside the cylinder. Medeco keyways are tighter than standard locks, so fine inland grit doesn’t flush out on its own. The fix is a full disassembly, clean-out, and re-pinning rather than spray lubricant, which just traps the grit and makes it worse. Call (866) 497-9415 and we’ll get your gate swinging clean again.
We do, and those calls make up a big share of our Los Serranos Medeco work. Tack rooms, barn doors, feed sheds, and perimeter gates all carry Medeco hardware that faces constant dust and temperature swings. We carry OEM pins and springs in the van specifically because these outbuilding cylinders fail differently than house locks. If your tack room Medeco is sticking or seizing, call (866) 497-9415 and tell us what kind of hardware you have. We’ll bring the right parts.
Biaxial is the classic high-security cylinder platform with the angled pin cuts and sidebar that Medeco is known for, and it’s been around long enough that we see it on plenty of older Los Serranos doors. Maxum is Medeco’s newer residential and light-commercial deadbolt line, built around the same high-security core in a heavier, more weather-resistant housing. For a front door in the 91709 heat, we usually recommend Maxum for the housing alone. For an existing Biaxial that’s sticking, repair is almost always cheaper than a swap. Call (866) 497-9415 if you want us to look at what you have before you spend on new hardware.
Yes, and that’s exactly the kind of job we handle regularly in Los Serranos. The key is choosing the right Medeco cylinder and housing for a door that sits outside in direct sun and dust. We’ll match the hardware to the door, set the strike properly so heat-warp doesn’t bind the bolt, and key it to your existing Medeco keyway if you want one key for everything. Call (866) 497-9415 and tell us what building you’re securing. We’ll give you a flat price on the phone.
Service Areas Near Los Serranos
We take Medeco calls across the Chino Hills foothills and down into the Inland Empire. Along with Los Serranos, our regular stops include Los Serranos service area neighbors in Chino Hills, Chino, and Eastvale, plus Medeco service in Montclair and Medeco service in Quail Valley. If you’re anywhere in the 91709 corridor or just off it, we’ll come out.
Book Your Medeco Service in Los Serranos Today
Need a Medeco cleaned, rekeyed, or replaced in Los Serranos? Call (866) 497-9415 and tell us what’s happening. We’ll give you a real price on the phone, and if it’s urgent, we’ll get a tech headed your way the same day.
Written by Gil Tanner, Owner at Greystone Locksmith, serving Los Serranos and the Inland Empire since we opened our doors.