CAR KEY REPLACEMENT
NASTF-certified mobile locksmiths serving every city across San Diego County. Full blank inventory, cut and programmed on the spot. 100+ five-star Google reviews. Call or text for an exact quote in under 60 seconds.
Also serving Ventura County
Car Key Replacement 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.
Transponder Key Replacement
Security light blinking and the engine won't turn over? That's the immobilizer rejecting the key. We fix it at your location, no tow needed.
Most transponder keys built after 2010 use encrypted challenge-response protocols. The ECU and chip exchange a cryptographic handshake every time you start the car, which means old-school cloning is useless.
Text us your year, make, and model for a free quote.
Smart Key / Proximity Fob Replacement
Keyless entry stopped working and the push-button ignition won't engage? We'll have a new fob programmed at your location in under an hour.
Proximity fobs are the key you never take out of your pocket, or purse, or gym bag, which is exactly how they end up lost. The system uses short-range encrypted radio between the fob and multiple antennas built into the vehicle's body.
Text us your year, make, and model for a free quote.
Laser-Cut / Sidewinder Key Replacement
Dealerships quote $400 to $600 for this key and make you tow the car in. We cut the identical key at your location in half an hour for less.
Sidewinders get their name from the winding groove milled down the center of a thick, flat blade.
Text us your year, make, and model for a free quote.
Flip Key / Switchblade Key Replacement
Housing cracked? Spring gave out? Blade won't fold back in? We fix or replace flip keys in a single visit, no return trip.
If your key folds in half like a pocket knife, you have a flip key, and you're far from alone. This is the single most common key type on San Diego's roads, covering everything from Kia Fortes and Hyundai Elantras to Chevy Cruzes and Mazda 3s.
Text us your year, make, and model for a free quote.
Standard Metal Key Replacement
Cheapest and fastest job we do. If you're down to your last key, get a spare cut before it becomes an emergency.
Purely mechanical. No electronics whatsoever. Turn it in the lock, start the engine, done. These are increasingly rare on consumer vehicles, but San Diego's massive military presence keeps them in heavy rotation: government-issue trucks and fleet rigs around Camp Pendleton, MCAS Miramar, Naval Base San Diego, and the shipyards.
Text us your year, make, and model for a free quote.
Emergency / Insert Key Replacement
San Diego's salt air eats fob batteries faster than the owner's manual promises. Get a replacement emergency blade cut before you're standing in a parking lot with a dead fob.
Park near the coast in Ocean Beach, La Jolla, or Coronado and the humidity alone can cut battery life well short of what you'd expect.
When the battery finally gives out, often at the worst possible moment, the emergency insert key is your only way in.
Text us your year, make, and model for a free quote.
How It Works

Describe Your Key Situation
Tell us the year, make, and model. We quote an exact price on the spot.

We Drive to You
Our mobile unit shows up wherever you are. Average arrival: 25 minutes.

New Key in Hand
Key cut, programmed to your vehicle, and tested before we pack up.
Sound Familiar?
- Your key fell out of your pocket at the beach and you already retraced your steps twice.
- You're returning a lease and the dealership is going to charge you $400 or more for the missing second key.
- A valet, mechanic, or parking attendant lost your key and you need a replacement before the finger-pointing sorts itself out.
- Your spare has been sitting in a kitchen drawer so long the transponder chip stopped syncing with the car.
- You bought a car private-party and the seller swore there were two keys but only handed over one at signing.
CAR KEY REPLACEMENT ACROSS ALL OF SAN DIEGO COUNTY
We Replace Keys for These Brands
All makes and models · 1995-2027
Frequently Asked Questions
What do I need to have ready when you arrive?
Can you come to a parking garage, tow yard, or my job site?
Will my roadside assistance or insurance pay for a new key?
I bought a key fob on Amazon. Can you just program it?
Can you make more than one key at a time?
My key broke inside the lock. Can you still help?
Do you handle fleet vehicles, rental cars, or motorcycles?
How do I know your price is fair?
What Customers Say
"Marco is the man for car keys. Lost my key for a Subaru WRX, he showed up same day and programmed it on the spot. Nice guy and great service."
Ray P."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."Needed a car key replacement in Hillcrest and EZ Car Keyz helped me immediately. The technician programmed a new smart key beside my car and checked every function. Fast, friendly, very professional."
Alexx C.
Lost Your Key? Call Now.
We cut and program a new key at your location. Exact price on the phone, no surprises at your door.

Acura
Audi
Bmw
Buick
Chevrolet
Chrysler
Ford
Gmc
Honda
Infiniti
Lincoln
Mazda
Mercedes Benz
Nissan
Porsche
Ram
Toyota
Volvo