Car Key Services
Car Rekeying in Poughkeepsie and the Hudson Valley
Car rekeying in the Hudson Valley — making old keys stop working, why push-to-start cars are different, and the electronic half people forget.
We come to you
Driveway, lot or roadside
Call or text
Same number, either way
Ownership checked
ID and paperwork, every job
Keys, fobs & remotes
Every kind, one call
Rekeying a car means making existing keys stop working. On vehicles with a mechanical ignition it involves changing the lock wafers so old blades won’t turn. On push-to-start vehicles there’s nothing mechanical to change — the equivalent is deleting the old keys from the immobilizer so they can no longer start the car.
What rekeying a car actually means
The word comes from house locks, where it has a simple meaning: change the pins inside a lock so the old key no longer fits, without replacing the lock itself.
Cars borrowed the word and complicated it, because a modern car has two independent systems deciding whether you’re allowed in and allowed to drive.
The mechanical side is the physical lock — the door barrels and, on older vehicles, the ignition cylinder. Rekeying means changing the internal wafers so an old blade won’t turn them.
The electronic side is the immobilizer, which decides whether the engine may run. Nothing mechanical affects it. A key deleted here stops working regardless of whether its blade still fits.
Rekeying properly usually means addressing both. Doing one and calling it finished is the common mistake, and the section below is about why.
Does your car have anything mechanical to rekey?
This decides what the job even is.
If you put a key in and turn it, you have a mechanical ignition. Rekeying can include changing its wafers, along with the door locks. Note that on some vehicles the doors and ignition aren’t keyed alike, so they’re separate pieces of work.
If you start it with a button, there’s no mechanical ignition to rekey. The door barrel exists — usually hidden under a cap on the handle, for the emergency blade — but the ignition doesn’t. For these vehicles, “rekeying” means the electronic half and only the electronic half.
Which is why a straight answer to “how much to rekey my car” isn’t possible without knowing what you drive. What actually moves the number is covered in what determines car key replacement cost.
Need a key sorted? Call or text — same number.
The half people forget
Here’s the failure worth understanding before you book anything.
Suppose you have an older car, you’re worried about a key that’s out there somewhere, and the door locks and ignition get rekeyed. The old blade no longer turns anything. Job done, apparently.
Except if that vehicle uses a transponder key, the old key’s chip may still be registered with the immobilizer. It can’t turn the ignition any more, so in practice it’s been neutralised — but the registration is still sitting there, and it will still be sitting there if the ignition cylinder is ever replaced.
Now the reverse case, which is more common and more consequential. On a push-to-start vehicle, someone asks to have the car “rekeyed” and gets the door barrel done. The old fob still starts the car. It was never about the door. Nothing mechanical was ever the point.
So the question to ask, whatever you drive: will the old keys still start the engine when this is finished? If the answer isn’t a clear no, the job isn’t complete.
Deleting keys electronically is the same mechanism as an immobilizer reset, and it carries the same consequence — every key you want to keep has to be present, because a reset erases all of them. That’s covered in detail in our key fob replacement guide.
When rekeying is the right call
A key is missing and you don’t know where. Not lost in the house — genuinely unaccounted for. A stolen bag, a key that never came back from somewhere.
Someone had access and no longer should. A former employee, an ex-partner, a valet situation that went wrong, a car that’s been in a shop you didn’t choose.
You’ve just bought a used car. See below — this is the one people don’t think about.
The ignition cylinder is being replaced anyway. If a worn cylinder is coming out, that’s the natural moment. Worth noting that our ignition repair page covers the opposite request — matching a new cylinder to your existing key so you keep one key. These pull in different directions, so it’s worth being clear which you want.
If you’ve just bought a used car
You have the keys the seller handed you. You have no way of knowing whether those were all of them.
That isn’t an accusation about anybody. Keys accumulate over a car’s life — a spare given to a family member years ago, one in a drawer from two owners back, one at a garage that closed. A used car with one owner and two keys is straightforward. A used car with four previous owners and one key is a different proposition, and the honest answer is that nobody can tell you where the others are.
Most people never think about it, and most of the time nothing comes of it. But it’s the cheapest moment to deal with it, because you’re already in the paperwork mindset and nothing has gone wrong yet.
Ask the seller how many keys the car came with originally. If the answer is two and you got one, that’s worth knowing either way.
Can you rekey a car yourself?
Realistically, no, for either half.
The mechanical side means removing lock cylinders from the vehicle and disassembling them to change the wafers. Door barrels come out through the panel — the same panel with wiring, window regulators and, on many vehicles, airbag components behind it.
The electronic side needs equipment that can communicate with the immobilizer, and for many vehicles, access to manufacturer data through a vetted registry. That access isn’t purchasable off a shelf.
There’s also a verification issue. Rekeying makes existing keys stop working, which is a serious thing to be able to do to a vehicle. Anyone doing it properly will check ownership first.
What we’ll need from you
- Year, make and model
- Whether you start it with a key or a button
- How many working keys you currently have, and all of them present at the appointment
- What you’re trying to achieve — old keys dead, a fresh start after purchase, or a cylinder replacement
- Where the vehicle is, and whether it can be driven
- Proof of ownership — registration or title, and matching photo ID
That last one is firmer here than anywhere else on this site. Rekeying takes someone’s ability to use a vehicle away. It doesn’t happen without proof that it’s yours to decide.
Rekeying is done where the vehicle sits on most makes. The door and ignition cylinders come out, get re-pinned to a new key and go back in, and the old keys stop working. If the job turns into a cylinder replacement on a model whose parts have to be ordered, we say so on the first call and come back to fit them. The car doesn’t get towed anywhere.
How quickly we get there. Around Poughkeepsie most calls are reached within 30–45 minutes, the rest of Dutchess within about an hour, and Putnam, Ulster and Orange in roughly an hour, longer at rush hour or with bridge traffic. You get a real arrival time on the phone before we set off.
Where we work
Based in Poughkeepsie, covering Dutchess, Putnam, Ulster and Orange counties, plus Westchester, Rockland and Columbia. Full coverage on the service areas page.
Frequently asked questions
Can a locksmith rekey an ignition cylinder?
On vehicles with a mechanical ignition, yes — the cylinder is removed and its wafers changed so old keys no longer turn it. Whether it’s workable depends on the make and model year.
How do you rekey a car ignition?
The cylinder is removed from the column, disassembled, and the internal wafers changed to match a new key. On push-to-start vehicles there’s no mechanical ignition, so the equivalent is done electronically.
Can you rekey a car yourself?
Not practically. The mechanical side means removing lock cylinders through door panels containing wiring and airbag components; the electronic side needs equipment and manufacturer data access.
Can a locksmith reprogram my car key?
An automotive locksmith with the right equipment can register keys to a vehicle and, on many vehicles, remove old ones. Which makes and years depends on the tooling — see our transponder keys guide.
Will rekeying stop an old fob from starting my car?
Only if the electronic half is done. Changing door locks doesn’t affect the immobilizer. On a push-to-start vehicle, deleting the old keys electronically is the entire job.
Can I find a key code by VIN number?
The VIN identifies which key information applies to your vehicle, but the data is released through a vetted registry rather than published. Any legitimate locksmith requesting it has to verify who they are and who you are.
I just bought a used car. Should I rekey it?
Worth considering, especially with several previous owners or fewer keys than the car originally came with. You have no way to know where any others are.
Do I need all my keys present?
Yes. Where the immobilizer is reset, every key not present is permanently erased — so bring all of them, including any that have become unreliable.
Other car key services
Locked out or lost your key? Call The Fobfather