Spare Key Fob: How to Get a Duplicate Car Key Fob for Less
By · Last updated: September 24, 2026
Why get a spare key fob now
With one working key, adding a second is usually simple: many vehicles let you program an extra remote with an onboard procedure, and a locksmith can add a key in minutes. If you lose your only key, the job becomes an “all keys lost” replacement, which usually means towing the car or paying a locksmith to come to you. A spare you keep at home is the cheapest insurance against that.
Your options for a spare key fob, compared
| Option | Typical cost | What to expect |
|---|---|---|
| Dealer | $150–$400 for the key, often plus a $50–$150 programming fee | OEM key, programmed at the service department, usually by appointment |
| Automotive locksmith (supplies the key) | Varies by vehicle; usually below dealer pricing | Can cut and program on the spot, often mobile |
| Online aftermarket fob + DIY or locksmith programming | Key from $14.10 (most $21.50–$45) + $0–$100 programming | Lowest total cost; you match the FCC ID and part number before ordering |
See the full breakdown in car key replacement cost: dealer vs locksmith vs DIY and aftermarket vs dealer key fob.
How to order the right spare key fob
- Find the FCC ID on the back of your current fob or inside the battery cover. Our FCC ID lookup guide shows where to look.
- Match the part number and buttons. The spare should have the same number and layout of buttons (lock, unlock, trunk, panic, remote start).
- Not sure? Use the VIN lookup to find the key for your exact vehicle.
- Check the key type. Push-to-start cars need a smart key; turn-key cars need a transponder or remote-head key. Not sure which you have? Read transponder key vs smart key vs remote.
Programming a spare when you already have a working key
Many vehicles allow you to add a remote with an onboard procedure (a sequence of ignition turns and button presses) in 2–5 minutes, and UrbanX includes free step-by-step instructions. Some makes need two working keys to add a third; others, especially newer push-to-start vehicles, need a locksmith’s programming tool, typically $50–$100. Follow the DIY programming guide to see what your vehicle needs. If your key has a metal blade, have a locksmith or hardware store cut the new blade to match your original.
Real-world examples
- In June 2025 a writer for The Autopian lost the only smart key she had with her for a 2025 Ford F-350 while on a trip in Maryland; the second key was in Detroit. Once the truck detected the key was gone it would not operate, the dealer would not simply program a replacement without the second key, and she estimated a dealer replacement of both keys at $800 to $1,000 or more. It took about nine hours for someone to drive the spare key to her. The lesson: keep a working spare, and keep it somewhere you can actually reach it. The Autopian, June 2025
- On November 19, 2021, a Tesla server outage left some owners who relied on the phone app unable to get into or start their cars for at least three hours, according to NBC News. Elon Musk blamed the outage on network traffic. The lesson: if your car can be unlocked by phone, still carry a physical backup such as a key card or fob. NBC News, November 2021
Frequently asked questions
How much does a spare key fob cost?
A spare from a dealer typically costs $150–$400 plus programming. An aftermarket spare from UrbanX starts at $14.10, with most key fobs between $21.50 and $45 and smart keys mostly $38.50–$61, plus $0–$100 for programming depending on your vehicle.
Can I make a spare key fob myself?
You can’t clone a fob at home, but on many vehicles you can program a new, matching fob yourself using the onboard procedure. Vehicles that don’t support it need a locksmith or dealer to program the spare.
How can I get a duplicate key fob?
Order a fob with the same FCC ID and part number as your current key, then have it programmed to your car. A new fob is programmed as an additional key rather than copied, so your original keeps working.