What happens when you lose your car key
When you lose a car key or it breaks, you have three main routes: a dealership, a locksmith, or a big-box retailer that offers key services. Each charges differently and takes a different amount of time. A dealership can make a key that works with your car's security system, but it usually costs more and requires proof of ownership. A locksmith can often cut a key faster and cheaper, though not all locksmiths can program modern car keys. A retailer like Home Depot or Lowe's can cut basic keys on the spot, but cannot program keys for cars that need electronic programming.
The cost and difficulty depend on what year your car was made and what type of key you need. Older cars with straightforward metal keys are straightforward. Newer cars with fobs, push-button starts, or transponder chips (keys that communicate with the car's computer) require programming, which is more expensive and limits your options.
Key Takeaways
- Dealerships can program any key for your car but charge the most and require proof of ownership; locksmiths are often faster and cheaper but cannot program all key types.
- Basic metal keys cost $5 to $15 at a big-box retailer, while transponder keys and fobs range from $50 to $400 depending on your car's make and year.
- You will need your vehicle identification number (VIN), which is on your registration or dashboard, to order a key from most places.
- If you are locked out of your car, a locksmith can open the door separately from making a new key, though this adds to the total cost.
Understanding the three main replacement routes
Dealerships are the most reliable option for newer cars. They have access to your car's security codes and can program any key type your vehicle uses. You will need to show proof of ownership (your title or registration) and your VIN. The process usually takes a few hours to a day. Costs vary widely by manufacturer—some charge $150 to $250 for a basic key, while luxury brands can charge $300 to $500 or more for fobs and transponder keys.
Locksmiths can cut and program keys for many cars, often faster than a dealership and at a lower price. A local locksmith typically charges $50 to $200 depending on your car's age and key type. The catch: not all locksmiths have the equipment to program transponder keys or fobs, so you need to call ahead and describe your car. Some locksmiths can also unlock your car if you are locked out, which a big-box retailer cannot do.
Big-box retailers like Home Depot, Lowe's, and Ace Hardware can cut basic metal keys while you wait for $5 to $15. They cannot program transponder keys, fobs, or push-button start keys. This option works only if your car is old enough to use a straightforward metal key, or if you need a spare cut from an existing key.
What information you need before you start
Gather these details before you call or visit anywhere. Your vehicle identification number (VIN) is a 17-character code that identifies your specific car. You can find it on your registration, insurance card, or on the dashboard at the base of the windshield on the driver's side. You will also need your proof of ownership—your title or registration—especially if you go to a dealership.
If you have a spare key at home, bring it with you. A locksmith or retailer can use an existing key to cut a new one without needing your VIN. If you do not have a spare and your car is locked, you may need to pay for an unlock service before the key can be made.
Cost breakdown by key type
The price you pay depends on what your car needs. A basic metal key for an older car costs $5 to $20 at a retailer or $50 to $100 at a locksmith. A transponder key—a key with a chip that communicates with your car's computer—costs $50 to $250 depending on where you go and what car you drive. A key fob (the remote that locks and unlocks your car) costs $100 to $400 at a dealership, or $50 to $150 at a locksmith if they can program it.
Dealerships are typically the most expensive but the most certain to work. Locksmiths fall in the middle. Retailers are the cheapest but only for basic keys. If you need your car unlocked at the same time, add $50 to $150 to the total depending on how difficult the lock is to open.
How to find a locksmith you can trust
Not all locksmiths are the same. Call at least two and ask what equipment they have and whether they can program keys for your specific car make and year. A reputable locksmith will ask you questions about your car before quoting a price. Avoid anyone who quotes a price without asking details, or who advertises extremely low prices—these are often bait-and-switch tactics where the final bill is much higher.
Check online reviews on Google or Yelp, but read carefully—some reviews are fake. Look for locksmiths who have been in business for several years and who mention specific car brands they work on. Ask whether they are licensed and insured. Many states require locksmiths to be licensed; check your state's requirements before you hire someone.
What to do if you are locked out of your car
If you cannot get into your car, you have two options: call a locksmith to unlock the door, or call your car's roadside information program (if you have one through your insurance or a membership like AAA). A locksmith will charge $50 to $150 to open the door, depending on the lock type. AAA or your insurance roadside service may cover this at no cost or for a small fee.
Once the car is open, you can then decide whether to have the locksmith make a new key on the spot, or go to a dealership or retailer. If the locksmith made the key, you will have a working key when ready. If you go elsewhere, you will need to arrange another way to get home or have the car towed.
Ordering a key by mail if you cannot go in person
Some dealerships and online key services will mail you a replacement key if you provide your VIN and proof of ownership. This takes longer—usually one to two weeks—but works if you cannot visit a location in person. You will need to pay for shipping and may pay a higher price than you would in person. Make sure the service is legitimate by checking whether they are affiliated with your car's manufacturer or have a physical address and phone number you can verify.
Online key services vary widely in reliability. Some are legitimate; others are scams that take your money and never send a key. Stick with services run by your dealership or well-known locksmiths who have a physical location and phone number you can call to confirm.
Frequently Asked Questions
Can I make a key from a photo of my VIN?
No. While your VIN tells a locksmith or dealership what type of key your car uses, they still need to verify your ownership and may need to see the car itself to program certain key types. This is a security measure to prevent someone from ordering a key for a car they do not own.
What if my car key breaks in half?
If part of the key is stuck in the lock or ignition, do not force it—you can damage the lock. Call a locksmith to remove the broken piece safely. Once it is out, you can order a replacement key through any of the three routes. If the key broke but is not stuck, you can take it to a locksmith or retailer to have a new one cut.
Do I need to reprogram my car after getting a new key?
For older cars with basic metal keys, no. For newer cars with transponder keys or fobs, the locksmith or dealership will program the key as part of the service. You do not need to do anything else. The key will work as soon as you receive it.
How much does it cost to replace a key fob?
A new fob from a dealership costs $100 to $400 depending on your car's make and model. A locksmith may charge $50 to $150 if they can program it. Some retailers sell aftermarket fobs for $20 to $60, but these may not work with all cars—check compatibility before you buy.
Can I order a spare key before I lose mine?
Yes. Having a spare made now is cheaper and easier than replacing a lost key later. A locksmith or retailer can cut a spare from your current key for $5 to $50 depending on the key type. Keep the spare in a safe place at home, not in your car or wallet.