Having a single key to your vehicle is one of the most common and most avoidable sources of automotive stress. A single lost, broken, or stolen key turns into an immediate crisis. A spare key turns the same event into a five-minute errand to retrieve the backup from home. Every vehicle owner should have at least two functional keys: one primary and one spare stored separately.
Car key duplication is more nuanced than it was 30 years ago. A hardware store or big-box retail key copy can accurately duplicate the mechanical blade of many keys -- but blade accuracy alone is not sufficient for transponder-equipped vehicles (virtually every vehicle built after 2000). Without a programmed transponder chip, the mechanical copy will turn the cylinder but the engine will not start because the immobilizer does not recognize the chip.
We perform complete key duplication: accurate blade cutting and transponder chip programming in a single on-site visit. The resulting spare key is fully functional -- it will open the doors, start the engine, and operate all remote functions. We come to you, and the entire process typically takes 20 to 45 minutes.
Why Hardware Store Keys Sometimes Don't Start Cars
The most common complaint we receive about spare keys is: 'I had a copy made at the hardware store but it won't start the car.' This happens because hardware store key cutters replicate only the mechanical blade profile. They do not clone or program the transponder chip, because doing so requires: a chip cloner device (for cloneable chip types) or OBD-II access and manufacturer credentials (for programmed chip types) -- neither of which a retail hardware store possesses.
The result is a key that works the door lock (because most door locks do not have an immobilizer), turns the ignition cylinder, engages the starter motor -- and then the engine shuts off after one second when the immobilizer does not receive the expected transponder signal. This is by design: the immobilizer is a theft deterrent, and it cannot distinguish between a locksmith's spare and a thief's copy at the mechanical level -- only the chip tells it which is which.
For vehicles with cloneable chip types (older Fords, Toyotas, many late-1990s and early 2000s domestics), a professional with a chip cloner can produce a valid spare at reasonable cost without needing the vehicle's OBD port. For vehicles with rolling-code or high-security chips (most vehicles 2007 and newer), OBD-II programming using the vehicle's security protocol is required.
Remote Head Key Duplication
Remote head keys -- keys with the transponder, blade, and remote fob buttons integrated into one housing -- are one of the most common key types on vehicles from the early 2000s through today. They are used by GM (HHR, Equinox, Impala, Silverado), Ford (F-150 pre-2015, Mustang, Taurus), Chrysler/Dodge/Jeep (many 2005-2018 models), Toyota (Camry, RAV4, Tacoma), Honda (Accord, CR-V), and many others.
Duplicating a remote head key requires both mechanical cutting and programming. The remote functions (lock, unlock, remote start, trunk) are programmed to the vehicle's BCM or TPMS receiver alongside the transponder chip programming. On many vehicles, adding a remote head key without a working original requires going through the OBD-II all-keys-lost procedure because the BCM must authorize the new remote during the same session that programs the transponder. We handle this as a single integrated procedure.
How Many Spare Keys Do You Need?
For a personal vehicle used by one person, one spare is the minimum -- stored at home in a drawer, not in the same bag or on the same keyring as the primary. Two spares are reasonable for households with multiple drivers or for people who travel frequently.
For a vehicle used by a family or shared household, each regular driver should have their own programmed key. Most vehicle ECUs support between 4 and 16 enrolled keys. Modern GM vehicles support up to 8. Toyota supports 8. BMW (depending on CAS generation) supports between 4 and 8. The system tracks each enrolled key individually, so if one is lost, only that key's ID needs to be invalidated -- the remaining enrolled keys stay functional.
For commercial vehicles used by multiple employees, we strongly recommend a key tracking protocol: each programmed key is numbered, assigned to an employee, and recorded in a fleet management log. This makes it straightforward to invalidate a specific key if an employee leaves or a key is lost, without reprogramming the entire fleet.
When You Need This Service
You currently have only one working key to your vehicle
A family member needs their own functional key
Your hardware store copy doesn't start the engine
The key you got with a used vehicle is worn and needs a fresh accurate copy
Your remote fob functions died on a remote head key and you need a fresh one programmed
You want to pre-emptively create a spare before traveling or before a busy event season
Frequently Asked Questions
Is a locksmith-made spare key as good as a dealer spare?
Functionally yes, when properly cut and programmed. We use OEM-equivalent key blanks from the same supply chain used by dealers, and professional-grade programming equipment. The chip, the blade material, and the programming result are equivalent to dealer service.
Can I get a spare key made from a key code without bringing the car?
We can cut the blade from a key code (if you provide the key code from your owner documentation), but programming the transponder chip always requires physical access to the vehicle's OBD-II port. The blade-only copy will work the door locks but not start the engine until it is programmed with the car present.
Can you copy a key that has no chip?
Yes. Older vehicles (pre-1998 typically) use plain mechanical keys. We cut precise copies of any standard automotive blade profile on our mobile cutter. These are straightforward duplications that take 10 minutes.