Car Key Replacement Cost: Lost Keys, Spares and Fobs

Car Key Replacement, $220 to $350 transponder, all keys lost
One company's prices
$220 – $350 transponder, all keys lost
$50 – $180ACME, metal key with all keys lost
$220 – $350ACME, transponder with all keys lost
$250 – $800+ACME, smart fob with all keys lost

ACME Locksmith, Phoenix: $220-$350 for a transponder cut and programmed on site when all keys are lost. Its smart-fob range is separate at $250-$800+. Spare-key menus cover a different job. Checked October 24, 2026.

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Short answer

All-keys-lost replacement versus a working spare, programming and blade cutting, with dated US owner bills.

A hand holding a metal car key with remote buttons in front of a blue car.
A car key with remote buttons. Key cutting and electronic functions need to match the vehicle. Photo: James086, CC BY-SA 4.0, cropped.

You have checked your pockets, the kitchen counter and the car park, and the key still has not turned up. Before ordering a replacement, tell the locksmith whether you have another key that can start the car.

So with every key lost, ACME Locksmith in Phoenix gives $220 to $350 for a transponder key and $250 to $800 or more for a smart fob, made and programmed at the vehicle.

I will show you how those jobs differ from copying a spare, what programming includes, and what three US owners paid. A remote that opens the doors and a key that starts the engine are not always the same thing.

Replacement Prices When All Keys Are Lost

ACME’s Phoenix replacement guide gives these totals for making a new key when no working key remains, checked October 24, 2026:

Basic metal keyACME; all keys lost, no electronic programming$50-$180
Laser-cut keyACME; exact key and vehicle determine the work$120-$300
Transponder chip keyACME; cut and programmed on site$220-$350
Smart fob or push-button-start keyACME; replacement and programming on site$250-$800+

The same page separates the key or fob, code retrieval and cutting, and electronic programming. Its published total ranges are complete estimates; adding all the highest component prices would describe a different bill.

ACME all keys lost: metal$50-$180, laser cut$120-$300, transponder$220-$350, smart$250-$800+.
Provider totals; do not add the high ends of component ranges. Diagram: CostCheckr, CC BY 4.0.

Another provider, Automotive Locksmith Indianapolis, publishes $150 to $220 for a transponder key and $220 to $350 for a smart proximity key. Its FAQ describes mobile key making even when every key is gone.

Those menus are useful starting points for their service areas. European vehicles, unusual security systems and the exact fob can require a separate offer, so provide the year, make, model and current key situation.

A Working Spare Changes the Job

If you can still drive the car, take it and the working key to the provider. ACME explains that its in-shop copy service avoids the work involved in making a key from scratch at a stranded vehicle.

Its separate car-key service page gives $10 to $25 for a basic no-chip duplicate and $64 to $199 for a transponder key cut and programmed. It labels that menu as a starting guide rather than an all-keys-lost offer.

Indianapolis advertises a spare made while a working key remains at $65 to $180. I would arrange that while you can bring the car in, rather than assume the low duplicate price applies after the last key disappears.

What Should the New Key Actually Do?

ACME distinguishes plain metal keys, chipped keys, laser-cut keys and smart fobs. The blade shape and the electronics are separate questions: a laser-cut blade does not tell you whether programming is required.

  • A mechanical blade must fit the intended lock. An emergency door key may provide access without being able to start the engine.
  • A transponder must be accepted by the vehicle’s security system, as well as having the correct blade where one is used.
  • Remote buttons and proximity starting need the correct compatible electronics. Include any emergency blade cutting in the agreed work.

Before leaving, try every promised function with the technician: door entry, engine starting and remote buttons. Have any surviving key tested too, and ask how the missing key’s electronic access will be handled.

Door access uses a working blade or compatible remote; starting uses a matching metal key, chip key or smart fob, depending on the car; remote controls need compatible electronics.
Key functions are separate. Confirm what is included for your vehicle. Diagram: CostCheckr, CC BY 4.0.

If your key is simply locked inside, our locksmith cost guide covers opening the car. Buying a new key is a different job from retrieving a working one.

What Owners Paid for Keys and Fobs

These older reports include a full fob service, a chipped-key bill and a door-only blade. Keeping their different functions beside the prices makes them easier to compare:

The Savannah post includes programming, while the Illinois example is only about door access. Neither the old amounts nor a cheap blade should be used as today’s price for replacing a lost smart fob.

Before Buying a Fob Online

ACME accepts customer-supplied keys when they are compatible. Get the provider’s approval for the exact part before ordering, including whether it will accept a used or aftermarket fob.

Ask whether its price includes the fob, programming, blade cutting and the mobile visit, and what happens if the supplied part cannot be programmed. A low hardware price leaves those other questions unanswered.

An aftermarket remote-start system adds another compatibility question. Our remote starter installation guide covers that accessory; an extra engine-starting key does not automatically add remote start.

Have proof of ownership and identification ready, and ask which documents the provider requires. If the vehicle cannot be serviced where it sits, confirm any transport arrangements before committing to a dealer appointment.

Car Key Questions You Might Have

How much is a car key replacement without the original?

ACME’s Phoenix all-keys-lost guide gives $50 to $180 for a basic metal key, $220 to $350 for a transponder, and $250 to $800 or more for a smart fob made at the car.

Is programming included in a replacement price?

ACME’s all-keys-lost transponder and smart-fob totals include programming. A listing for a fob or blank alone may not.

Can a locksmith make a key without a working copy?

ACME describes making a key from the vehicle’s key code and programming it at the car. The provider must confirm support for your particular model and security system.

Does a cheap door key also start the car?

Not necessarily. A mechanical blade may open a lock while the engine still requires an accepted transponder or smart fob.

Where These Prices Come From

I hope this helps you pay for a key that does everything you need. If you have a question about a replacement quote, you can email me at costcheckr@gmail.com.

Joseph Michael

Joseph Michael

Joseph Michael is the founder and editor of CostCheckr.com, a website that helps you find out how much things cost in different situations. He gathers prices from shop websites, price lists and public data, and turns them into guides you can use before you pay. He loves to travel, play cricket, read books and study economics and statistics.

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