Car keys · Hamilton
Spare Car Key Duplication
The proximity fob has ridden in a pocket for years, the range feels shorter than it used to, and a dashboard warning mentioned a battery a while back. Nobody has sorted out what happens on the day it finally goes dark.
Spare Car Key Duplication
In plain words
Making a spare before the original goes missing is simpler than making one after, because the whole process is built from a working key to read or trace from. With the vehicle and its existing key both present, the locksmith identifies the blade profile and the chip or coding the immobilizer expects, produces a matching blank, and gives it the same electronic identity as the first key. Testing both keys side by side in every door and the ignition confirms the spare performs the same way, so a future lost key becomes an errand rather than a call for entry.
How the visit goesOne key opens the car, starts the car, and rides in one pocket every day. Nothing backs it up. A dropped storm drain, a torn pocket or a moment of distraction would leave the household without a way to drive anywhere tonight.
Hamilton
How the visit goes
Locating the right blank
A correct spare starts with the correct blank: the same blade profile as the original, and where relevant the same shell shape for a remote head or proximity fob so the buttons and battery compartment line up. Aftermarket blanks exist for most common platforms, while a less common or very recent model sometimes calls for a shell sourced specifically for that vehicle. Getting this step right avoids a mismatch discovered only after cutting has begun, and it is one of the reasons the vehicle's year, make and model are confirmed early rather than assumed from the look of the current key.
Cutting the blade
A mechanical duplicate is produced either by tracing the original on a key-cutting machine, which follows every notch of the existing blade into a fresh blank, or by cutting to a factory code pulled from the VIN and the lock manufacturer's records. Code-cutting is used when the original is too worn to trace reliably, since copying a worn blade would simply pass its rounded edges on to the spare. Either way the new blade is deburred and test-fitted into the door or ignition lock before any electronic work begins, so a mechanical problem is caught early rather than blamed on the chip later.
A record worth keeping
A short note of how many keys exist for the vehicle, what each one can do, and who holds it is a small thing to write down and a genuinely useful one to have later, whether that later is a private sale, an insurance question, or simply working out which key someone borrowed and forgot to return. This record also makes any future visit faster to start, since a returning locksmith or a different one entirely can begin from a known baseline instead of counting keys from scratch.
Spare Car Key Duplication
In the van
- Remote-head key shell
- Deburring file
- Code-cutting machine
- Diagnostic port programming interface
- Key blank matched to blade profile
What affects the quote
Same fees day, night or weekend
1Fob battery and physical condition
A fob that needs a fresh battery or shows cracking or water exposure adds a small amount of extra work beyond programming a key that is otherwise in good shape.
2Scheduling more than one vehicle together
Two vehicles booked into the same visit, such as a household's pair of cars, are generally more efficient to handle together than arranging two separate appointments on different days.
3Matching two vehicles to one key
Bringing a second vehicle onto the same key, when the two lock systems are compatible, takes more identification and testing than producing a spare for a single car alone.
Spare Car Key Duplication: questions
What is a relay attack, and does it matter for my spare?
A relay attack is when nearby equipment picks up a proximity fob's signal from inside a house and relays it to a vehicle parked outside, tricking the car into thinking the key is close enough to unlock or start. It matters for every fob in the household, spare included, which is why storing any proximity key in a signal-blocking pouch when it is not being carried is worth doing for all of them.
Can a spare be made from a key that is already worn?
Yes, and it is often a good reason to make one. Rather than tracing every rounded edge of a worn blade onto the new copy, the locksmith can decode the lock or cut to a valid factory code for the blade, then read or clone the chip data separately for the electronics, producing a spare that is cleaner than the original rather than a copy of its wear. The worn key can then be compared against the fresh one and retired if it is due for that.
Is it possible to leave out certain functions on the spare, like remote start?
Yes. A spare can be built to do everything the first key does, or scaled back to just the blade and chip that unlock a door and start the engine, without a remote start button or a trunk release. This is agreed before programming begins and is a deliberate choice rather than a lesser copy, useful for a valet, a young driver, or anyone the household wants kept to essential access.
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Spare Car Key Duplication near you
Use this list to find the lock service that fits your situation in Hamilton. Openings for lockouts. Rekeys and lock changes for new owners and departing tenants. Deadbolts and high-security hardware for people who want more from their door. Commercial hardware and master keys for businesses. Safes. Keys of every kind.