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 estimateFast, Reliable Car Key Replacement Across Corunna
Car key replacement in Corunna, MI typically costs between $160 and $380 depending on whether your vehicle uses a traditional key, a transponder chip key, or a smart key fob with push-button start. We cut and program keys on-site at your home, your workplace, or wherever your vehicle is parked in Shiawassee County, usually within 45 to 90 minutes of your call. If you’re stranded right now in downtown Corunna near the county courthouse or out on a rural parcel off M-21, call (866) 361-1189 and we’ll get a truck headed your way.

Glen Kowalski and our team know this area. Corunna isn’t a big anonymous suburb where a locksmith just passes through on the way somewhere else. It’s a county seat with a tight downtown grid and farm country spreading out in every direction. That means our trucks carry key blanks, transponder programmers, and extraction tools sized for what actually drives around here: late-model daily drivers, older farm trucks, and everything in between.
Why Squire Locksmith Is Corunna’s Preferred Car Key Replacement Company
Most locksmiths in Michigan build their reputation on doors and deadbolts. We do that too, from Schlage to Medeco, but our Car Key Replacement team works on vehicle locks and ignition systems daily. That matters in Corunna because the nearest dealership might be a 25-minute drive, and a tow back to it costs more than the key itself.
Our work in and around Corunna covers the full range of what shows up: transponder keys for Ford and GM trucks parked at farmhouses, chip keys for commuter sedans sitting outside the courthouse annex, and even older vehicles with no chip at all that still need a clean mechanical cut. We’ve cut keys on Shiawassee Street, out near the fairgrounds, and on gravel driveways off rural roads where the nearest neighbor is half a mile away.
We answer the phone when you call. If you’re locked out or keyless in Corunna, the last thing you want is a voicemail tree. Our emergency response is a core part of what we do, not an afterthought we tack on when things are slow.
Styles & brands we work with







Our Car Key Replacement Services in Corunna
Transponder Key Cutting and Programming
Most vehicles built after 2000 use a transponder chip in the key that must be programmed to the vehicle’s immobilizer before the engine will start. In Corunna, we handle this on-site with mobile programming equipment. A 2012 F-150, a Chevy Silverado, a Ford Escape: we cut the mechanical key and pair the chip in your driveway, no tow truck and no dealership detour.

Broken Key Extraction and Ignition Cylinder Service
Michigan winters are hard on car locks. Freeze-thaw cycles force moisture into cylinders, and when a key won’t turn, people force it. A snapped key blade in a door or ignition is a common call for us in Corunna between November and March. We extract the broken piece with non-destructive tools, then assess whether the cylinder itself needs servicing or replacement before cutting a new key.

Non-Destructive Entry for Locked Vehicles
Locked keys in the car happen everywhere, but in Corunna it’s often a farm truck with the keys sitting on the seat while the driver is out checking fence lines. We use non-destructive entry tools and techniques: long-reach tools, air wedges, and proper lock-picking skills. We don’t slim-jim or pry door frames, and we don’t leave scratches on paint or weatherstripping.

Rekeying Car Door Locks to Match a New Key
If your ignition cylinder was replaced and now the door locks don’t match, or if you’ve lost track of who has copies of your vehicle key, we can rekey the door cylinders to a new key. Rekey, don’t replace: the same cylinders, new internal pins, and the old key stops working. For older trucks and farm vehicles common around Corunna, this is often more practical than chasing down a full lock set.

What happens when you call
- 1
A real person answersNo phone trees — you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Corunna
Squire Locksmith works across the hardware spectrum: consumer lines like Schlage and Kwikset plus high-security lines like Medeco, Abloy, and Mul-T-Lock in commercial and residential work. For automotive keys, that brand fluency matters. The same discipline that lets us service a Medeco cylinder downtown applies to reading the cuts on a worn key from a 1990s GM truck. We stock a broad range of key blanks for Corunna customers, from basic brass blanks to transponder keys for Ford, GM, Chrysler, Honda, Toyota, and Nissan, so we’re not running back to a supplier mid-job.
Common Car Key Replacement Problems We See in Corunna Homes
- Keys snapped off in frozen door locks. Freeze-thaw cycles in Corunna push moisture into car door cylinders. When the temperature drops, the cylinder seizes. Customers force the key, and the blade snaps. We extract the broken piece first, then cut a fresh key once the cylinder is freed.
- Worn ignition cylinders on older rural vehicles. Corunna’s farm trucks and older sedans often have 150,000-plus miles and original ignition cylinders. A newly cut key may not turn smoothly because the pin and tumbler stack is worn. We can service or replace the cylinder so the new key works reliably.
- Lost keys with no spare on well-and-septic parcels. When the only key to a vehicle disappears somewhere between the barn and the back field, there’s no spare to copy. We decode the lock or pull the ignition cylinder to generate a working key from scratch, which is more involved than a simple duplicate.
- Transponder keys that start the engine but won’t unlock doors. Some vehicles came from the factory with separate operation, and wear or a prior repair can leave the door locks out of sync. We rekey the door cylinders to match the new key, restoring single-key operation without replacing the entire lock set.
Pricing for Car Key Replacement in Corunna, MI
We quote the full price on the phone before anyone is dispatched, and that’s the price on the invoice. No call-out surcharge added on arrival. A standard non-chip key for an older vehicle in Corunna typically runs $45 to $95. A transponder chip key with on-site programming runs $160 to $280. A smart key or proximity fob with push-button start runs $240 to $380. Broken key extraction adds $40 to $75 depending on the cylinder involved. If your ignition cylinder needs replacing, that’s typically $120 to $220 in addition to the key itself. Call (866) 361-1189 for an exact quote, and we’ll confirm the year, make, and model against our stock before we leave.
We Also Serve Cities Near Corunna
Our Corunna customers aren’t the only ones we help. We regularly run calls to Owosso, Chesaning, Ovid, and Saint Charles, bringing the same on-site key cutting and programming setup we use in town. If you’re on the edge of 48817 or just across a township line, we’ll tell you on the phone whether we can reach you quickly.
Serving Corunna, MI — Our Local Coverage Area
We’re based in the Corunna 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 – Car Key Replacement in Corunna
Yes, we regularly drive out to rural properties around Corunna, including farmhouses on well-and-septic parcels where the nearest neighbor is a quarter mile of field away. We bring mobile key cutting and programming equipment, so the work happens at the vehicle, not at a shop. Call (866) 361-1189 and tell us the vehicle’s year, make, and model plus the nearest crossroad, and we’ll give you a straight answer on time and price.
If the key blade snaps off in a frozen door cylinder, don’t try to dig it out with tweezers or a screwdriver because that pushes the broken piece deeper and damages the wafers or pins. Call us instead. We extract the broken key with non-destructive tools, warm and lubricate the cylinder, and assess whether the cylinder needs servicing or replacement. Then we cut a new key that works. Call (866) 361-1189 and we’ll walk through what you’re seeing.
Yes, we program smart keys and proximity fobs on-site for many newer vehicles in Corunna, using the same mobile programmers used by mobile automotive locksmiths nationwide. Some late-model vehicles still require dealer-only programming due to encrypted immobilizer systems; in those cases we’ll tell you directly that you need the dealer, rather than charging you for a partial attempt. Call (866) 361-1189 and give us the year, make, and model, and we’ll tell you right away whether we can program it.
Yes, and in Corunna we often recommend rekeying over replacement for older vehicles where the door cylinders are no longer available as new parts. We replace the internal pins and springs so the cylinder operates with a new key, and the old key stops working. It preserves the original hardware while restoring key control. Call (866) 361-1189 if you’re dealing with mismatched door and ignition keys, and we’ll explain what’s involved for your specific vehicle.
A traditional key is a purely mechanical cut, and any matching key blank will start the vehicle. A transponder key has a small chip inside that must be electronically paired with the vehicle’s immobilizer before the engine will run, even if the mechanical cut is correct. It matters in Corunna because many vehicles here are 10 to 25 years old, spanning both key types, and the right solution depends on what your specific vehicle needs. Call (866) 361-1189 and tell us your vehicle’s year and model; we’ll tell you which type you have and what it costs.
Written by Glen Kowalski, Owner at Squire Locksmith, serving Corunna and Shiawassee County.