Transponder Key Programming in San Diego

Most cars made in the last 25 years have a small chip in the key, called a transponder. A plain copy of the metal key opens the door, but the engine will not start until the chip is programmed to the car. Key One Locksmith cuts and programs transponder keys at your vehicle across San Diego County.

When You Need It

• A copied key opens the door but the car will not start
• You need a spare chip key
• Your only key is worn, cracked or lost (see all keys lost)
• The security light flashes and the car will not crank

How It Works

1. Call with the year, make and model.
2. We give you the price before we start.
3. We cut the key and program the chip to your car with a diagnostic tool.
4. We test start the engine with every key before we leave.

Why San Diego Calls Key One

• Mobile service. We come to you at home, at work or in a parking lot.
• Open 24/7. Nights, weekends and holidays.
• Upfront price. You hear the price before any work starts.
• Trusted locally. Rated 4.9 stars from more than 1,150 Google reviews. See what customers say.

Frequently Asked Questions

How do I know if my key has a chip?

Most keys with a thick plastic head have one. Tell us the year, make and model and we will tell you.

Can you program a key I bought online?

Sometimes. Many online keys use the wrong chip. We check it before programming.

Do you also program fobs and smart keys?

Yes. See key fob replacement and smart key replacement.

Need a Chip Key Programmed?

Call Key One Locksmith at (619) 960-8463. We cover San Diego County, from East County to the coast, 24 hours a day.