There's a surprisingly large difference between making a spare car key and replacing keys when you've lost every one. Understanding it might convince you to make that spare today. Here's the comparison.
Making a spare while you still have a working key is one of the simpler automotive locksmith jobs. Making a key when all keys are lost is one of the more involved. Same car, very different amount of work — which means very different cost and time.
When you have a working key, the car is already in a known-good state. The locksmith can reference the existing key and, for chipped keys, program a new one alongside it more simply. It's faster, usually cheaper, and low-stress because you're not stranded. See our car key replacement page.
With no working key, the locksmith has to determine the correct key from scratch, cut it, and put the vehicle into a mode where it accepts a brand-new key with none present, then program it. That takes more time, more specialized equipment, and isn't possible on every model for a mobile locksmith. It also often happens when you're already stranded, which adds pressure.
| Making a Spare | All-Keys-Lost | |
|---|---|---|
| Complexity | Lower | Higher |
| Typical cost | Less | More |
| Time | Usually quicker | Longer |
| Stress | Low (not stranded) | High (often stranded) |
| Availability | Broad | Not every model on-site |
If you have exactly one working key right now, that's a risk waiting to bite. One lost or broken key and you're in the harder, pricier all-keys-lost situation. Making a spare while you can is cheap insurance against a bad day.
If it's too late for a spare and you've lost everything, don't panic — for many vehicles it's still solvable. Call a locksmith with your year, make and model and proof of ownership, and they'll tell you whether it can be done on-site or needs the dealer.
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