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SAN DIEGO COUNTY
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Fast Response Locksmith

SPARE CAR KEYS

A spare key now is cheaper than an emergency replacement later. We cut and program duplicates on-site in minutes.

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★★★★★Over 100 Reviews
EZ Car Keyz Mobile Spare & Duplicate Keys Van San Diego County
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Marco Levy - EZ Car Keyz Spare Keys
Marco L.Your Locksmith

Also serving Ventura County

25-Min ETA Upfront Pricing Free Quote

Spare & Duplicate Keys Options We Offer

Prices below are typical ranges. Your exact cost depends on year, make, model, and whether all keys have been lost. We'll confirm the price before any work starts.

01

Standard Metal Key Duplicate

Old-school metal key with no chip? A spare takes five minutes and costs less than dinner. Get one before you're standing in a parking lot wishing you had.

Mobile code-cut spare for a 2005 Honda Odyssey at a home in Encinitas, California. We cut to the manufacturer's factory depth and spacing rather than copying a tired blade, so the spare locks and starts cleaner than the current key.

We use code-cut machines calibrated to factory depth and spacing specs, not a trace of the worn pattern on your existing key. That means the duplicate is cut to the original manufacturer code, which often works smoother than the key you've been using for ten years.

$55-$85~15 min

Text us your year, make, and model for a free quote.

02

Transponder Key Duplicate

Your key has a chip that talks to the engine every time you start the car. A hardware store can copy the blade, but only we can clone the chip.

Mobile transponder duplication for a 2018 Kia Optima at a residence in La Mesa, California. Blade cut to factory code on the Xhorse Dolphin, chip cloned with our programmer, full authentication verified at the ignition. Done in twenty-five minutes.

Every transponder key has a small RFID chip in the plastic head. When you turn the ignition, the car sends a challenge signal to the chip, and the chip responds with a cryptographic code. Wrong code, dead starter. Duplicating a transponder key means cutting the blade to factory spec and cloning or programming the chip with professional tools.

$145-$250~25 min

Text us your year, make, and model for a free quote.

03

Smart Key / Fob Duplicate

One fob left and the dealer wants $400 or more plus a week to order? We program a spare at your location in half an hour for less.

Mobile smart-key spare for a 2019 Honda Accord at a home in Santee, California. The VVDI Key Tool Plus pulls the HITAG3 token from the immobilizer and writes it to a new blank proximity fob, at a fraction of the dealer's four-hundred-dollar quote.

Smart key duplication reads the vehicle's immobilizer through the OBD-II port, generates a new cryptographic token, and writes it to a blank proximity fob. We use the Autel IM608 and VVDI Key Tool Plus for virtually every proximity protocol: Toyota DST-AES, Honda HITAG3, Hyundai 128-bit AES, Ford PATS.

$225-$37530-45 min

Text us your year, make, and model for a free quote.

04

Flip Key Duplicate

That folding switchblade key has a cut blade, a transponder chip, and a remote module packed into one housing. We duplicate all three components on site.

Mobile flip-key clone for a 2018 Mazda 3 at a home in National City, California. Blade cut on a dimple-profile machine, chip cloned to the fresh shell, and remote frequency paired to the vehicle.

Flip keys combine a folding blade, a transponder chip, and usually a remote lock/unlock module in a single spring-loaded housing. Duplicating one means sourcing the correct shell, cutting the blade on a machine that handles dimple or laser-track profiles, cloning or adding the transponder chip, and pairing the remote frequency.

$145-$27525-35 min

Text us your year, make, and model for a free quote.

05

Laser-Cut Key Duplicate

Milled groove down the center of the blade instead of teeth on the edge? Most locksmiths can't cut this key. We carry the machine that does.

Mobile laser-cut duplication for a 2020 Audi A4 at a home in Poway, California. The serpentine groove is milled on our Xhorse Condor following the VIN-derived bitting code, so the duplicate matches the original to factory tolerance.

Laser-cut keys have a serpentine groove milled into the flat side of the blade rather than traditional sawtooth edge cuts. This design is standard on BMW, Mercedes, Ford, Jaguar, and many late-model vehicles. Cutting one requires a precision milling machine that traces the factory bitting code to within thousandths of an inch.

$175-$30030-40 min

Text us your year, make, and model for a free quote.

06

Valet / Backup Key Service

Handing the car to a valet, a mechanic, or your teenager? A valet key starts the car and locks the doors but keeps the glovebox and trunk off limits.

Mobile valet key cut for a 2018 Infiniti Q50 at a driveway in Imperial Beach, California. Valet profile restricts infotainment and trunk access so the owner can hand it to a detailer or a teenager without worrying.

Valet keys are purpose-limited. On older vehicles, the blade physically won't turn the glovebox or trunk cylinder. On newer vehicles with smart systems, a valet profile can limit speed, disable storage access, and restrict infotainment.

$120-$22520-30 min

Text us your year, make, and model for a free quote.

Simple Process

How It Works

EZ Car Keyz Spare & Duplicate Keys step 01 - Request a Spare in San Diego County
01

Request a Spare

Tell us the vehicle and how many copies you need. Flat quote, no surprises.

EZ Car Keyz Spare & Duplicate Keys step 02 - We Come to You in San Diego County
02

We Come to You

Mobile key cutting at your home, office, or wherever is convenient.

EZ Car Keyz Spare & Duplicate Keys step 03 - Spares Ready to Go in San Diego County
03

Spares Ready to Go

Every copy cut, programmed if needed, and tested before we leave.

Sound Familiar?

  • You've been driving on one key for over a year and keep putting off getting a second one made.
  • A second driver in the household needs their own key instead of coordinating handoffs every morning.
  • Your key blade is visibly worn and the housing is starting to crack, and you want a clean duplicate before the original gives out.
  • You're selling or lending the vehicle and need an extra key to hand over with the paperwork.
  • You learned the hard way what an all-keys-lost replacement costs and swore you'd never go through it again.

Frequently Asked Questions

Why should I get a spare key instead of waiting until I need a replacement?
Cost. A spare made from a working key costs roughly half of what an emergency replacement costs when every key is gone. Emergency replacement requires lock decoding, immobilizer PIN extraction, and building a key from scratch with no reference. Duplication clones what you already have. Less labor, less time, less equipment, lower price.
Can you make a spare without going to the dealer?
Yes. We use the same OEM-spec blanks and diagnostic platforms the dealer uses. The duplicate is functionally identical. The difference is we come to you, finish in one visit, and don't charge dealership overhead rates.
Will making a spare mess up my existing keys?
On most vehicles, no. Adding a key to the system keeps existing keys active. Some older models wipe the key memory during programming, so we always ask you to bring every working key. We program them all in the same session so nothing gets erased by accident.
How many keys can my car hold in its system?
Most vehicles support up to eight transponder keys or fobs. Some older models cap at four. We check your vehicle's capacity before we start so you know how many slots are open.
Is a duplicate key just as reliable as the original?
Yes. The blade is cut to the same factory specs and the chip is programmed with the same protocol. If we use an aftermarket key shell, it might look slightly different cosmetically, but the blade cut, chip communication, and fob functions are identical to the original.
Can you duplicate a key that's already worn down?
We can, but we don't trace worn keys. Instead we pull the original bitting code from the VIN or decode the lock and cut to factory spec. That gives you a blade that matches what the key was supposed to be, not the shape it's worn into over years of use. The duplicate often works smoother than the original for this reason.
How long does spare key duplication take?
Metal keys take about 15 minutes. Transponder and flip keys run 25 to 35 minutes with programming. Smart fobs and laser-cut keys run 30 to 45 minutes. We give you the time window with your quote.
Do I need the car present to get a spare made?
For metal keys with no chip, we only need the existing key to cut from. For any key with a transponder chip or proximity fob, yes, the car has to be present. The chip has to be programmed to the vehicle's immobilizer through the OBD-II port, and that requires physical access to the car.

What Customers Say

⭐⭐⭐⭐⭐

"Super fast - 20 minutes from calling. Had a spare key made for my 2017 Nissan Rogue in 15 minutes. Friendly, fast, professional service."

Zebadiah A.
⭐⭐⭐⭐⭐

"Just got a new car and needed an extra key. He got here within minutes and was so friendly. The whole process took no time at all. Will definitely be recommending him."

Patrick M.
⭐⭐⭐⭐⭐

"Got here quick, excellent service, great pricing. Very happy with EZ Car Keyz San Diego."

Charles H.
EZ Car Keyz Spare & Duplicate Keys video in San Diego County

Want a Backup Key? Call Now.

Get a spare before you need one. We come to you, cut it, program it, and test it.

Acura key fob2019 Acura RdxAcura
Audi key fob2018 Audi Q5Audi
Bmw key fob2019 Bmw X3Bmw
Buick key fob2018 Buick EnclaveBuick
Chevrolet key fob2019 Chevrolet EquinoxChevrolet
Chrysler key fob2019 Chrysler 300Chrysler
Ford key fob2020 Ford ExplorerFord
Gmc key fob2019 Gmc AcadiaGmc
Honda key fob2019 Honda CivicHonda
Infiniti key fob2018 Infiniti Q50Infiniti
Lincoln key fob2018 Lincoln MkcLincoln
Mazda key fob2019 Mazda Cx 5Mazda
Mercedes Benz key fob2018 Mercedes Benz GlcMercedes Benz
Nissan key fob2019 Nissan RogueNissan
Porsche key fob2019 Porsche CayennePorsche
Ram key fob2019 Ram 1500Ram
Toyota key fob2019 Toyota CamryToyota
Volvo key fob2018 Volvo Xc60Volvo
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