
A lost car key with no spare is replaced at the car: a locksmith makes a new key from your VIN, without the original, and the cost depends mostly on the kind of key your car uses. With no spare, the key is cut from scratch and programmed to the immobilizer, more work than copying a key you still have.
Apex Locksmith Pros handles lost car key replacement from $129+ across McKinney and nearby cities: the tech comes to where the car is parked, cuts the key by code, programs it on site and hands it over during the same visit, so there's usually no tow. A spare made from a working key starts from $119+. Before you call, have your VIN, year, make and model, and a photo ID that matches the registration. Below: why losing your only key costs more, what changes the price and whether to add a spare while the car is open.
Need it handled today? Car Key Replacement from a licensed mobile locksmith in McKinney and nearby cities.
In this guide (6 sections)
Lost your car keys with no spare: what to do first
Most people searching this are standing next to a car they can't start. The order that saves money is simple.
First, check the obvious places one more time: the last store you left, the ignition of a second car, a jacket in the back seat. Ask the store's service desk; keys get turned in more often than people expect.
Second, find the paperwork before you call anyone. The VIN is on the driver's side of the dashboard where it meets the windshield, on the registration and on the insurance card. A locksmith or a dealer needs it to cut the right blade and order the right fob, and you'll need photo ID that matches the registration either way.
Third, decide where the car is going to stay. A dealer needs the car on their lot, which usually means a tow. A mobile locksmith cuts and programs the new key where the car is parked. With us that all-keys-lost job starts from $129+, the total is quoted on the phone before anyone drives out, and there's no call-out fee.
Last, once the new key works, ask for a second one in the same visit. Copying a working key costs far less than starting from zero again, and it's the cheapest insurance against reading this article twice.
Why "only key" is the part that costs you
If your only key is gone and you need a new one made, the Car Key Replacement page explains how Apex Locksmith Pros handles an all-keys-lost job on site, starting from $129+. This guide explains why that job costs what it does.
When you still have a working key, copying it is cheap because the locksmith can read the existing key and clone the chip. Lose the last one and that shortcut is gone. Now a new key has to be cut from scratch and the car's computer has to be told to trust a key it has never seen.
That second step is the real driver of the price. Modern keys aren't just metal. Since the late 1990s most cars use a transponder chip that talks to the immobilizer, and newer vehicles use proximity or push-to-start fobs. The car won't crank unless the key's code matches what's stored in the module. Programming that match is skilled work, and it's what separates a cheap hardware-store copy from a real replacement.
What changes the price by key type
Price moves mostly with the key type. A basic non-chip metal key for an older car, mostly pre-2000, is the simplest to make on site. A transponder key has a chip that must be programmed after the blade is cut. A flip key or remote-head key combines the remote and the cut blade in one unit, and proximity or push-to-start smart fobs sit at the top, because the fob itself costs more and some brands take longer to program. Luxury lines like Lexus or Infiniti tend to land at the higher end.
At Apex Locksmith Pros, all-keys-lost replacement starts from $129+, key programming starts from $129+ and a spare from a working key starts from $119+. Your exact total depends on the year, make, model, and how many keys you want made at once, and the dispatcher quotes it as a flat number on the phone before dispatch, with no call-out fee.
Want to know what your job costs? Call and get a flat price before anyone drives out.
Why making it on site is usually cheaper than the dealer
The default advice is "call the dealership," and for a handful of high-security vehicles that's still the right move. But for most cars, going to the dealer means paying for a tow because you have no working key, then waiting while they order a fob and fit you into the service schedule. The tow and the downtime often cost more than the key.
A mobile locksmith comes to you, if you're in a Frisco parking garage or a driveway in McKinney, and cuts the key by code or by reading the lock with a tool like a Lishi. We pull the key code from your VIN when needed, cut a fresh blade, and program the chip on the spot. One stop, no tow, and you usually drive away the same visit.
What to do right now if you lost your only key
First, retrace and check the obvious spots before you spend anything: jacket pockets, the door of whatever building you just left, the gap between car seats if a door happens to be unlocked. People find the key more often than you'd think.
If it's truly gone, gather three things before you call: your VIN (it's on the lower driver's-side windshield and your insurance card), your year/make/model, and your photo ID matching the registration. A good locksmith will ask for proof the car is yours before making a key, and that's a feature, not a hassle. Then ask the shop two questions up front: "Do you cut and program on site for my exact vehicle?" and "Is the price all-in?" Clear answers there save you from surprises in the driveway.
Should you make a spare while you're at it?
Almost always, yes. The single most expensive scenario is the one you're in now: zero working keys. Once a locksmith already has your car open and is programming a fresh key, adding a second key during the same visit is far cheaper than a separate trip later.
Think of it as insurance. A spare turns a future lost-key emergency into a quick copy job instead of a from-scratch replacement with a possible tow. If you've got a teen driver, a long daily commute, or you just hate surprises, the extra key pays for itself the first time you misplace one.
Key takeaways
- Losing your last key costs more than copying one, because a new key must be cut from scratch and programmed to the car's immobilizer.
- Key type drives the price: plain metal keys are simplest, transponder keys need programming, and push-to-start fobs cost the most. Apex replacement starts from $129+ when every key is lost.
- A mobile locksmith can usually cut and program on site, which often beats the dealer once you factor in towing and wait time.
- Have your VIN, exact vehicle details, and matching photo ID ready before you call; expect proof-of-ownership requests.
- Add a spare during the same visit. It's cheaper then and turns the next lost key into a simple copy instead of a full replacement.


