Medeco Lock Rekeying: The California Owner’s Guide
Medeco lock rekeying in California typically runs $180-$320 per cylinder installed, and we stock the full pin kit and sidebar components for same-day service on most Medeco 3+, Biaxial, and Classic series locks. Most homeowners discover their Medeco needs rekeying after a move, a lost key, or a tenant change - or when the key starts sticking in the cylinder despite fresh lubrication, which usually means the pins and sidebar have worn out of spec. We carry the Medeco-specific .115″ diameter bottom pins and the angled sidebar springs that big-box rekey kits never include, and we’ll quote your exact price before the truck rolls.
Which Medeco Models This Applies To
Medeco has three active cylinder architectures you’ll find in California homes and businesses, and each needs a different rekeying approach. The Classic series, made from the 1960s through the early 2000s, uses a single sidebar with angled cuts - you’ll spot it by the Medeco logo stamped on the face and the keyway with the distinctive “M” profile. The Biaxial series, common in 1990s-2010s installations, added a second locking point and requires both standard pins and the offset drivers that interact with the rotating pin chambers. The current 3+ series, which you’ll see in newer high-security installs around Los Angeles and the Bay Area, layers in a sliding element that makes unauthorized duplication nearly impossible - and makes amateur rekeying attempts fail about nine times out of ten.
We stock OEM Medeco pin kits and factory sidebar springs, though for older Classic cylinders we’ll sometimes source quality aftermarket pins from LAB or HPC when the factory kit has been discontinued. The gotcha most owners miss: Biaxial and 3+ cylinders use different sidebar spring tensions, and swapping them causes the lock to either jam solid or lose its pick resistance entirely. We measure your existing spring compression before we touch anything. Gil Sanderson learned this the hard way early in his career - a mis-matched spring in a Pasadena job cost him a full Saturday driving back to fix it, and he’s checked every spring’s part number against the cylinder stamp ever since.
Signs Your Medeco Lock Rekeying Is Failing
- Key sticks or hangs at the 10 o’clock position. This is the telltale symptom of sidebar binding against worn pin chambers. In California’s dry inland valleys, dust infiltration accelerates the wear, and the graphite lubricant many owners use turns to abrasive paste after a few years of heat cycling.
- Key turns but the bolt doesn’t retract fully. The tailpiece connector between cylinder and latch has slipped or the cam timing has drifted. Medeco’s precision tolerances mean a 1/32″ misalignment stops everything - a problem we see often in older Sacramento homes where foundation settling has shifted door frames.
- Key works in warm weather, fails in cold mornings. Metal contraction in California’s high desert and mountain communities exposes marginal pin-to-shear-line fits that summer heat tolerates. The lock isn’t broken, but the pinning is at the edge of factory spec and needs resetting to the center of tolerance.
- Duplicate keys cut at a hardware store don’t work. Medeco’s angled cuts require a code-cutting machine with the proper angle guides - most hardware stores cut them like standard Schlage or Kwikset keys. Your original key works because it was factory-cut; the poorly duplicated key has damaged the pins by forcing against the sidebar at the wrong angle.
- Lock was rekeyed before and now feels “mushy.” A previous locksmith used standard .108″ pins instead of Medeco’s .115″ diameter, or substituted generic sidebar springs with the wrong compression rate. The lock functions but has lost the crisp, positive feel and the pick resistance that justified the Medeco premium in the first place.
Replacement Cost & What’s Included
Medeco rekeying in California breaks down into three price bands depending on what your cylinder actually needs. A straightforward pin change with no worn components - key lost, new tenant, standard security update - runs $180-$220. If we need to replace sidebar springs, drivers, or a damaged plug, you’re looking at $240-$280. Full cylinder rebuild with new pins, springs, and a factory-cut key set on a system that hasn’t been serviced in fifteen-plus years lands at $290-$320.
Every rekey includes disassembly, ultrasonic cleaning to remove the grit that California dust and Santa Ana winds push into your lock, precision pinning to factory depths, sidebar spring tension verification, and two new keys cut on Medeco blanks. We don’t charge extra for the cleaning or the key blanks - it’s part of doing the job right. Our 90-Day Done Right Promise covers the labor and any parts we install; if the key hangs or the sidebar binds, we come back. No paperwork to file, no argument.
Current standing offer: Seniors and veterans receive a permanent 5% discount on all rekeying work.
DIY or Call Us?
There’s a honest split here. If you’re mechanically inclined, you can safely remove the cylinder from your door and read the series stamp on the face - that’s useful information to have when you call. You can also check whether the keyway has obvious debris or if the tailpiece screw has loosened. What you should not attempt: disassembling the cylinder itself. Medeco’s sidebar mechanism is under spring tension, and the angled pins will scatter across your workbench the moment the plug comes free. Worse, the sidebar chamber has a tiny locator pin that’s easy to lose and impossible to replace without the factory kit. We’ve been called to more than a few California kitchens where a well-meaning owner has a lock in thirty pieces and no idea which pin went where.
We stock the full Medeco pinning kit, the factory sidebar springs in both tensions, and the plug followers that keep everything aligned during disassembly. A square deal: the price we quote is the price you pay. Call (833) 294-4584 and we’ll tell you exactly where your job fits before we drive.
FAQs
In normal residential use, a properly done Medeco rekey lasts 10-15 years, though California’s coastal salt air can corrode internal springs faster than inland climates, and heavy-traffic commercial cylinders may need attention in 5-7 years. The key is using the correct pin diameter and factory sidebar springs - shortcuts taken during the first rekeying show up as premature wear within two or three years. Call (833) 294-4584 if you’re unsure when yours was last serviced - estimates are free.
Sometimes. If the cylinder shell is undamaged and only the pins or springs are worn, a rekey restores full function at roughly half the cost of cylinder replacement. We only recommend full replacement when the plug is scored, the sidebar chamber is wallowed out, or the keyway has been damaged by repeated forced-entry attempts. We’ll show you the wear when we disassemble it and let you decide - no pressure, no upsell.
Most residential Medeco rekeys take 45-60 minutes from the time we arrive, including removal, cleaning, repinning, reassembly, and testing. Commercial jobs with multiple cylinders or master key systems run longer, but we quote time and price upfront so you can plan your day. We tell you the price before the truck rolls, and we put everything in writing - that part has never changed.
Yes. Every Strongbox truck carries the complete Medeco pin kit in all depths, both sidebar spring tensions, factory key blanks, and the specialized tools for disassembly without damage. We’re an independent service provider, not affiliated with Medeco, but we’ve sourced factory parts through authorized distributors for over two decades. If you have a Medeco lock in California, we can rekey it today.
Ready to get your Medeco lock sorted? Call (833) 294-4584 now. A live person will answer - day, night, weekend, or holiday - and we’ll quote your flat price before any truck moves. We stand behind it - no paperwork, no arguing.
Written by Gil Sanderson, Owner & Master Locksmith, Strongbox Lock & Safe Co. of California at Strongbox Lock & Safe Co. of California, serving California and nearby areas.