Car key replacement in Ottawa, cut and programmed at your car
Lost the only key, need a spare before you lose that one, or a fob that has stopped working. A new key or fob is cut and programmed where your car is parked, and lost keys can be erased from the car.

At a glance
- For
- Most cars, SUVs, pickups and vans
- Keys
- Transponder, remote head, flip and smart keys
- Where
- At home, at work or at the roadside
- Have ready
- Registration, ID and the VIN
- Lost keys
- Can be erased from the car
- Experience
- 10 years in the trade, Fully insured
What kind of key does your car use?
Car keys have changed more in the last thirty years than in the century before. The type decides what car key replacement involves, and what it costs.
Which car key do you have?
Tap the one that looks like yours. The type decides what a new one involves, and roughly what it costs.
Plain metal key
- What it is
- An all-metal key with no chip, on older vehicles.
- A spare from a working key
- Cut on a machine from your key, or from the code. The quickest job.
- Every key lost
- Cut from the vehicle code or by decoding the door lock.
Transponder key
- What it is
- A metal blade with a chip in a plastic head. The car will not start without the right chip.
- A spare from a working key
- Cut, then programmed to the car.
- Every key lost
- Cut from the code, then programmed through the diagnostic port.
Remote head key
- What it is
- Lock and unlock buttons built into the key head.
- A spare from a working key
- The key and the remote are both programmed.
- Every key lost
- Cut and programmed at the car, and lost keys erased.
Flip key
- What it is
- The blade folds into the fob at the press of a button.
- A spare from a working key
- Programmed to the car. A cracked shell or bent blade can often be replaced alone.
- Every key lost
- Made and programmed on site for most makes.
Smart key or proximity fob
- What it is
- For push-to-start cars that unlock as you walk up. A metal emergency key hides inside.
- A spare from a working key
- Programmed to the car, and the emergency blade cut to the door lock.
- Every key lost
- Programmed on site for most makes. A few newest models are dealer-only.
How a new key is made at your car
When every key is lost, the car has to be opened, a key cut and the car taught to recognise it. Car key replacement in Ottawa is usually done in one visit, wherever the car is parked.
Prove the car is yours
The registration or insurance slip and ID that matches it. No locksmith should make a car key without it.
Open the car if needed
Without damage, as on the car locksmith page.
Cut the blade
From the vehicle's key code, or by decoding the door lock, on a cutting machine in the van.
Program the key or fob
A programming tool plugs into the car's diagnostic port and adds the new key to the car's memory.
Erase the lost keys
Keys that are missing are removed from the car's memory, so anyone who finds them cannot start it.
Test everything
The key starts the car, the buttons lock and unlock it, and the emergency blade opens the door.
Key fob replacement and repair
Not every key fob that stops working needs replacing. The most common fault is the battery, a coin cell that a locksmith can change in a minute, and cold weather is often what finishes a weak one.
If the buttons still work but the car will not start, the chip may have lost its pairing, or the car may need a battery check of its own. If the shell is cracked or the buttons are worn through, the electronics can often be moved into a new case.
When a fob really is lost or dead, a new one is programmed to the car on site. Fobs bought online can be cheaper, but many are locked to another car or the wrong frequency, so ask before you buy one and expect it to be tested before it is programmed.
Before you replace a fob
- Try a new battery
- Most fobs open with a small screwdriver or coin.
- Try the spare
- If the spare works, the problem is the fob, not the car.
- Check the car battery
- A weak car battery can stop the car seeing the fob.
- Ask before buying online
- Not every fob can be programmed to every car.
Do not wait until you are down to one key
The most expensive car key is the one you need when every other key is gone. Making a spare from a working key is a much simpler job than making a new key from nothing, because there is nothing to open and the car already trusts a key it can compare against.
If you bought a used car with one key, have a spare made in the first week. If a teenager is about to start driving, have one made for them rather than lending yours. And if a key has gone missing, have it erased from the car at the same time.
Car theft gives one more reason. Ottawa Police figures reported by CTV counted 1,645 vehicle thefts in 2024 and about 1,488 in 2025, and CAA warns that keyless relay theft is a known method. Keep fobs away from the front door, and in a signal-blocking pouch overnight if your car uses keyless entry.
Locksmith or dealer?
Both can handle car key replacement and key fob programming for most vehicles. These are the differences that matter.
What car key replacement costs
Give the year, make and model when you call, and you will get a price for your key. These are the things that drive it.
Questions people ask
Can you make a car key without the original?
For most vehicles, yes. The key is cut from the vehicle's key code or by decoding the door lock, then programmed to the car. You need to prove ownership first.
How long does car key replacement take?
A spare from a working key is usually quick. Making a key when all keys are lost takes longer, because the car may need to be opened and the lock decoded before the key is cut and programmed.
Can a lost key be stopped from starting my car?
Yes. When a new key is programmed, missing keys can be erased from the car's memory, so they no longer start it, even if someone finds them.
Can I buy a fob online and have it programmed?
Sometimes. Many online fobs are the wrong frequency or already locked to another car. Check the part number with the locksmith before you buy.
Other work The Ottawa Locksmith does
For everything else, from a sticking deadbolt to a safe, see the main page for a locksmith in Ottawa.
Tell us what is locked
613-820-5648Open 24 hours a day, 7 days a week
If you are locked out right now, call, day or night. For anything that can wait, send the form and you will get a call back with a price.