Where to get a car key replaced and what each option costs

The cheapest place to replace a car key depends on what kind of key you need and whether you still have the original. A basic metal key from a hardware store like Home Depot or Lowe's costs $2 to $10 and takes five minutes. A key fob — the plastic remote that locks and unlocks your car — costs $50 to $200 at a dealership but $15 to $50 at an independent locksmith or online retailer. A transponder key, which has a computer chip inside and must be programmed to your car, costs $100 to $300 at a dealership but $50 to $150 at a locksmith.

The dealership is almost always the most expensive route because they program the key to your specific vehicle and charge a service fee on top of the part cost. A locksmith who comes to your home or meets you at your car charges less for the key itself but may add a trip fee of $50 to $100. Ordering online and programming the key yourself (if your car allows it) is cheapest but only works for certain models and requires you to have at least one working key already.

Key Takeaways

  • A basic metal key from a hardware store costs $2 to $10, while a key fob from a locksmith runs $15 to $50 and a transponder key costs $50 to $150.
  • Dealerships charge the most because they program the key to your car, but locksmiths are 30 to 50 percent cheaper for the same service.
  • You can program some key fobs yourself using a sequence of button presses and ignition turns, which saves the programming fee entirely if your car model supports it.
  • Having a spare key made now at a hardware store for $5 to $15 prevents the need for emergency locksmith calls later.

What type of key your car uses

Not all car keys are the same, and the type you need determines the price. A standard metal key has no electronics and straightforward turns the ignition — these are rare on cars made after 2000 but still used on some older vehicles and trucks. A key fob is a plastic remote with buttons that lock and unlock the doors and sometimes open the trunk; it does not start the car on its own. A transponder key looks like a standard key but contains a computer chip that communicates with your car's ignition system — if the chip does not match, the engine will not start. A smart key or proximity key lets you unlock and start the car without inserting anything; you just push a button on the fob or keep it in your pocket.

You can find out which type you have by looking at your current key and checking your owner's manual or calling your dealership with your vehicle identification number (VIN). The VIN is a 17-character code on your dashboard, visible through the windshield on the driver's side, or on your registration paperwork. Knowing the type before you shop saves time and prevents you from buying the wrong replacement.

Locksmith versus dealership: cost and speed

A locksmith is usually 30 to 50 percent cheaper than a dealership for the same key. For a transponder key, a dealership might charge $150 to $300 total, while a locksmith charges $75 to $150. Locksmiths can often come to your location — your home, your workplace, or your car — which is convenient if you are locked out, but they charge a trip fee of $50 to $100 on top of the key cost. Some locksmiths offer mobile service 24 hours a day, which costs more but may be worth it if you need a key at night or on a weekend.

Dealerships are slower but sometimes necessary. If your car is very new or has advanced security features, the dealership may be the only place that can program the key. Dealerships also keep records of your vehicle, so they can confirm ownership before making a key, which some locksmiths cannot do. Call your dealership first to ask whether a locksmith can handle your specific car model; if they say yes, you can save money by going to the locksmith instead.

Online key retailers and self-programming

Websites like Amazon, eBay, and specialty retailers sell unprogrammed key fobs and transponder keys for $20 to $80, which is less than half the locksmith price. The catch is that you must program the key yourself, and not all cars support this. Some vehicles let you program a key fob by sitting in the driver's seat, closing all doors, inserting your current key into the ignition, and turning it on and off a specific number of times while pressing buttons on the new fob. Other cars require you to use a diagnostic tool or visit a dealership to complete programming.

Before ordering online, search your car's year, make, and model plus "self-program key fob" to see if your vehicle supports it. Read the reviews on the product page to confirm that other owners with your car were able to program the key successfully. If self-programming is not possible for your car, you will still need to pay a locksmith or dealership to program the key after it arrives, which defeats the savings.

Making a spare key now to avoid emergency costs later

The single cheapest way to handle a lost or broken key is to never need emergency replacement in the first place. A hardware store can cut a basic metal key or key fob copy for $5 to $15 while you wait. If your car uses a transponder key, you can have a locksmith program a spare for $50 to $100, which is far less than the $150 to $300 you would pay in an emergency. Keep the spare in a safe place at home, not in your car or wallet.

If you have an older car with a standard key, making two or three spares costs almost nothing and protects you against losing all copies. If you have a newer car with a transponder or smart key, one spare is usually enough, since the cost of making additional spares is high. Some dealerships offer a key replacement plan or warranty that covers one free replacement within a certain period; ask about this when you buy the car or have service done.

What to do if you have lost all your keys

If you have lost every copy of your key, you cannot program a new one yourself because you need at least one working key to start the programming sequence. In this case, you must call a locksmith or dealership. A locksmith can come to your car, verify ownership by checking your registration and ID, and make a new key on the spot for $100 to $200. A dealership can do the same but usually charges $150 to $300 and may require you to prove ownership with the title or registration before they will help.

Some locksmiths can pick your car's lock to access the ignition, which lets them program a new key without the old one. Others use a diagnostic tool to reprogram the car's security system. The method depends on your car's age and security features. Call a few locksmiths in your area and describe your situation; they can tell you over the phone whether they can help and what it will cost before you commit.

Frequently Asked Questions

Can I get a key made at a hardware store if my car is newer?

A hardware store can cut a physical copy of your key, but if your car uses a transponder or smart key, the copy will not start the engine. The store can make a spare that looks identical, but it will only work if you also take it to a locksmith or dealership to be programmed. For newer cars, go directly to a locksmith or dealership instead.

How long does it take to get a replacement key?

A hardware store key takes 5 to 15 minutes. A locksmith can usually make a transponder key in 30 minutes to an hour if they come to you, or faster if you go to their shop. A dealership typically takes one to three business days because they order the key and schedule programming. Emergency locksmith services available 24/7 are faster but cost more.

What if my car key fob works but the buttons are broken?

You can often replace just the fob shell (the plastic case) for $10 to $30 and move your existing circuit board into it, which is cheaper than replacing the whole fob. Some auto parts stores sell replacement shells. If the circuit board itself is damaged, you will need a new fob programmed, which costs the full amount.

Will a locksmith need to see my car title to make a key?

Most locksmiths will ask for your ID and registration to confirm you own the car, but not all require the title. If you have lost your keys and cannot access your registration, call ahead and ask what documents the locksmith needs. Some will accept a photo of your ID and registration on your phone.

Can I use a key from a different car of the same make and model?

No. Even if two cars are the same year, make, and model, their keys are programmed to individual vehicles and will not work in another car. The transponder chip or smart key is tied to that specific car's security system. You must have a key programmed for your exact vehicle.