Call (647) 955-3277
Car key blank being cut on a machine inside a service van

GTA Lockman Mobile Locksmith Services · Toronto & GTA

Car Key Replacement in Markham, Toronto & the GTA

Car keys cut and transponder chips and fobs programmed at your vehicle, including when every key is lost.

Toronto & the GTAFamily ownedMobile service
Car Key Replacement in Toronto & the GTAToronto & the GTA
Technician using a laptop to program a key inside a car
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Car keys cut and programmed at your vehicle

GTA Lockman Mobile Locksmith Services replaces car keys and fobs across Toronto and the GTA. We bring key cutting machines and programming equipment to the vehicle, so you do not need to tow it to a dealership.

We work on standard keys, transponder chip keys, remote head keys, flip keys and proximity fobs for push-button start. Tell us the make, model and year when you call and we confirm what is possible for your vehicle.

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Spare keys before you lose the last one

Ask about a car key →

A spare costs far less than replacing the only key after it is lost. When every key is gone, the vehicle's computer has to be accessed to add a new one, which takes more time. If you are down to one key, getting a spare now is the cheaper option. See spare keys and duplication.

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Common key and fob problems

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  • Fob not working. Often the battery, sometimes the buttons or the circuit board. We test it before recommending a replacement.
  • Worn key blade. A key that has to be jiggled to turn can be recut from the vehicle's key code.
  • Broken transponder chip. The key turns but the engine will not start. The chip needs replacing and programming.
  • Key broken in the ignition or door. We extract the broken piece and cut a new key.
Hands cutting a key on a key duplication machine
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When all keys are lost

We can make a new key even when no key is left. The key is cut from the lock or the key code and then programmed to the vehicle. Old keys can be removed from the vehicle's memory so a lost key no longer starts the car. See key codes and key numbers.

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Ignition and lock repairs

A key that will not turn in the ignition is often a worn ignition cylinder rather than a bad key. We repair or replace ignition cylinders and door locks on many makes.

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Related automotive services

Call (647) 955-3277 →

For keys locked inside the vehicle, see car lockout service. For brand-specific details, see Cadillac key replacement and Mitsubishi key replacement.

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Keys we work on

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  • Standard metal keys for older vehicles, cut from the code or the lock
  • Transponder keys, which carry a chip the car must recognize before the engine starts
  • Remote head keys, where the key blade and the lock buttons share one housing
  • Flip keys, with a blade that folds into the fob
  • Laser-cut keys, with a groove cut along the face of the blade
  • Proximity fobs for push-button start, which stay in your pocket
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See car key types explained for how each one works.

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What to have ready when you call

  • Make, model and year, and the VIN if you have it
  • How many keys you have now, and how many you want
  • Proof that you own the vehicle, such as the registration
  • Where the vehicle is parked
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Motorcycles, trucks and rental vehicles

Ask about a car key →

We also replace motorcycle keys, and help with keys for rental trucks such as U-Haul. When a key has been lost or stolen, we can remove it from the vehicle's memory so it no longer starts the car.

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Booking a visit for a car key

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Call (647) 955-3277 or use the contact form and tell us the address and the make, model and year. We confirm the price and give you an arrival estimate before booking, and the technician explains the work on site before starting.

Questions about car key replacement in Toronto & the GTA

Yes. The key can be cut from the lock or the key code and then programmed to the vehicle.

Can you make a car key without the original?

Yes. The key can be cut from the lock or the key code and then programmed to the vehicle.

Do you program key fobs bought online?

Sometimes. Many online fobs are the wrong frequency or a poor copy. Send us the part number before buying and we will tell you whether it can be programmed.

Is it cheaper than the dealership?

Often, and there is no need to tow the vehicle. Call with the make, model and year for a price.

Can a lost key be stopped from starting my car?

Yes. Lost keys can be removed from the vehicle's memory when the new key is programmed.

My key turns but the car will not start. Is it the key?

Often it is the transponder chip in the key. We test it to find out.

Can you replace a push-button start fob?

Yes, for many makes. Tell us the vehicle details when you call.

Do you repair ignitions?

Yes. A key that will not turn is often a worn ignition cylinder, which can be repaired or replaced.

How do I get an extra car key made?

Call with the make, model and year. If you still have a working key, we cut and program the extra key from it at your vehicle in Markham, Toronto or anywhere in the GTA. An extra key costs far less than replacing the last one.

When are you open?

Monday to Thursday 8:30 AM to 9:00 PM, Friday 8:30 AM to 4:00 PM and Sunday 9:30 AM to 9:00 PM. We are closed on Saturday.

Reviews from GTA Lockman customers

4.9 out of 5 from 463 Google reviews (September 2026)

GTA Lockman Mobile Locksmith Services is a mobile locksmith working on homes, businesses and vehicles across Toronto and the GTA, in the trade since 2010. Every review is written by a customer on Google, where you can read them in full.

Read the reviews on Google

Areas served: Toronto, North York, Scarborough, Etobicoke, Vaughan, Richmond Hill, Markham, Stouffville, Newmarket, Mississauga, Brampton, Oakville, Milton, Halton Hills, Pickering, Ajax, Whitby, Oshawa, Uxbridge.

Hands cutting a key on a key duplication machine

Plan your locksmith visit

Describe the vehicle, its make, model and year, and where it is parked. Contact GTA Lockman Mobile Locksmith Services to confirm the scope and scheduling for your location.

Operating hoursMonday–Thursday: 8:30 AM–9:00 PM
Friday: 8:30 AM–4:00 PM
Sunday: 9:30 AM–9:00 PM
Saturday: closed

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