

Car keys · Toronto
Spare Car Key Duplication in Toronto
The paperwork for the used car changed hands last week, and the previous owner mentioned, almost as an afterthought, that a second key never turned up.
In plain words
Driving on a single key means a lost pocket, a dropped bag or a worn blade can turn into a day without a car. A spare closes that gap while the original is still on hand to work from, which is the easiest moment to make one, since the vehicle, the lock system and a proven key are all present together. The locksmith matches the new blank to the blade profile, gives it the chip or code the immobilizer expects, and tests it apart from the original in every door and the ignition before calling the job finished.
How the visit goesThe 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
How the visit goes


Confirming what the spare needs to do
Not every household wants an identical twin of the original. Some ask for a plain mechanical spare with no remote buttons at all, useful for a valet or a young driver who does not need trunk release or remote start. Others want every function the first key has, cut and coded to behave exactly the same in anyone's hand. Settling this before work begins decides which shell is ordered and how much programming the visit involves, and it is worth revisiting if the household's answer turns out to differ from what the person calling first assumed on the phone.
Matching a remote head or fob
When the original carries buttons for locking, unlocking or remote start, the new key or fob is programmed to the vehicle's receiver so those same functions respond from the spare. This usually means putting the vehicle into a programming sequence from inside the cabin, then pressing the new remote's buttons in the order the manufacturer specifies. Some platforms allow this through the doors and ignition alone; others need the diagnostic port involved as well, particularly when the remote functions are tied into the same module that manages the immobilizer, so the two steps happen together rather than separately.
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
Remote-head key shell
Transponder chip
Chip cloning tool
VIN and key-system reference
Key blank matched to blade profile

Spare Car Key Duplication
What affects the quote
Getting to the vehicle
Straightforward access, such as a driveway or an open lot, is simpler than a locked underground garage, a gated lot or a vehicle parked somewhere with restricted entry, which the quote accounts for.
Timing around the day's other calls
A visit that fits between other scheduled stops is generally simpler to arrange than one needing a dedicated block of time set aside on its own.
How many keys are needed
Making one spare is a smaller job than producing several matching keys for a whole household or a small fleet in the same appointment, and the quote reflects how many are wanted.
What to have ready
- Do you want the spare to match every function, or just start the car?
- Is there more than one vehicle you would like keyed the same way?
- Where is the vehicle usually parked?
Spare Car Key Duplication: questions
QuestionsWhat 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.
What testing happens before I leave with the new key?
Every door lock, the trunk or hatch, the ignition or start button, and any remote functions are checked with the new key on its own, apart from the original, so neither key is quietly helped along by the other's signal. The vehicle is started more than once to rule out an intermittent issue, and only once both keys pass independently is the visit considered finished.
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 ReplacementThe fob went through the washing machine in a jacket pocket.
- Key Fob ProgrammingThe remote clicks the way it always has, but the vehicle no longer locks, unlocks or answers with its usual chirp.
- Transponder Key ProgrammingThe new key slides into the ignition and turns exactly the way the old one did, but the engine only cranks.