Car keys · Pefferlaw
Spare Car Key Duplication in Pefferlaw
The blade on the everyday key has gone shiny and thin along one edge, and lately it needs a wiggle before the ignition catches.
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 goesA lockout last month ended with a locksmith opening the door and going home, and the same single key has been carried ever since with nothing behind it. The relief of getting back in faded within a week into the same exposure.
Spare Car Key Duplication
How the visit goes
Looking at the working key itself
The existing key is examined for exactly what it is: a plain blade, a blade carrying a transponder chip, a remote head with buttons built into the plastic, or a proximity fob meant to stay in a pocket. Wear matters too; a blade that has thinned unevenly or a button that sticks tells the locksmith what to expect when it is time to trace or copy from it, and whether the original itself might be due for retirement once the spare exists. A key that has already been altered, filed or repaired is noted before it becomes the reference for a new copy.
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.
What a lost key means from here
With a tested spare in hand, a lost original is worth acting on without delay rather than setting aside: the household still has a working key for the vehicle, and the locksmith can remove the lost key's access from the immobilizer so it can no longer start the car if someone else finds it. That step only addresses the electronics, though, so if the lost key's blade could still turn a matching door cylinder by hand, that cylinder is worth rekeying at the same visit rather than left as it was.
Spare Car Key Duplication
In the van
VIN and key-system reference
Transponder chip
Deburring file
Coin-cell fob battery
Chip cloning tool
Spare Car Key Duplication
What affects the quote
Copying versus diagnostic programming
Some vehicles allow the chip to be copied directly from the original in one step, while others need the locksmith to connect through the diagnostic port and have the vehicle's own module enrol a freshly coded chip, which takes longer at the car.
Matching 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.
Sourcing the blank or shell
Common platforms use blanks kept in regular stock, while a less common model or an unusual shell sometimes has to be sourced specifically for that vehicle before work can begin.
What to have ready
- Do you want the spare to match every function, or just start the car?
- Has a key ever gone missing that was never accounted for?
- Does the key have buttons, a chip, or neither?
Spare Car Key Duplication: questions
QuestionsCan a spare be made if the vehicle has an aftermarket alarm or remote starter installed?
Generally yes, though it is worth mentioning any aftermarket system when you call, since a factory immobilizer that has been wired into a third-party alarm or remote starter sometimes behaves differently from the standard setup the locksmith expects. Knowing this in advance lets the visit account for it rather than discovering it partway through programming.
How is the electronic chip handled during duplication?
Where the transponder supports it, the chip in the working key is read and its data cloned onto a fresh chip, sometimes with vehicle-specific data pulled from the car to help. Where cloning is not supported for that particular vehicle and chip, the locksmith instead connects through the diagnostic port and has the car's own security module enrol a freshly coded chip as a new, independently authorized key.
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.
Related services
- Car Key ReplacementYou bought the car privately and it came with a single key on a shoelace.
- Key Fob ProgrammingA replacement fob just arrived in its box, shiny and untouched.
- Transponder Key ProgrammingEvery key that ever opened the car is gone at once, one taken with a stolen bag, the spare misplaced months ago and never replaced.