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Crenshaw Lock

Transponder Key Programming in Temple City · 24/7 mobile

Transponder Key Programming in Temple City, CA

Crenshaw Lock Company provides mobile transponder key programming in Temple City, California, 24 hours a day, 7 days a week. We come to your vehicle and program chip keys to its immobilizer so it starts and runs. Call (323) 997-8867 to talk with a real technician.

  • Mobile to your Temple City location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
Car key being programmed with a handheld programmer inside a car
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Most cars built since the late 1990s will not start unless the chip inside the key head is recognized by the immobilizer. Cutting the metal blade is only half the job. The car's computer also has to accept the chip, and that takes the right diagnostic equipment and the right procedure for your make, model and year. That is what transponder key programming is, and it is what we do.

In Temple City, the need usually comes up in everyday ways: the only key was lost in a parking lot off Las Tunas Drive, a spare never got made, a key went through the wash, or a used car arrived with one key and no backup. Because we are fully mobile, we come to the car, whether it is in a driveway on a quiet residential street, at a shop on Las Tunas Drive, or beside Temple City Park. There is no storefront to visit and no tow needed just to get a key made.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead technician David Shar built the business on straightforward service. We tell you what your vehicle needs, explain the options, and program the key before we leave. Call (323) 997-8867 any time, day or night.

How it works in Temple City

  1. 1

    You call and describe the vehicle

    Call (323) 997-8867 and tell us the make, model, year and whether you have any working key. Those details tell us what kind of key and programming procedure your car uses, and whether this is an add-a-key job or an all-keys-lost situation.

  2. 2

    We come to you in Temple City

    We are mobile, so the work happens where the car is parked. That might be a driveway near Baldwin Ave, a spot along Rosemead Blvd, or a business lot on Las Tunas Drive.

  3. 3

    Confirm ownership

    Before we create a key for any vehicle, we ask for proof that it is yours, typically ID and registration or other ownership paperwork. This protects you, and it is standard practice for responsible locksmiths.

  4. 4

    Cut the key and prepare the chip

    We cut the blade to match your vehicle, using the door or ignition lock if needed, and prepare a compatible transponder or smart key. The key has to fit physically and carry the right chip type for the car.

  5. 5

    Program to the immobilizer

    Using professional programming equipment, we connect to the vehicle and register the new key so the immobilizer accepts it. Depending on the vehicle, existing keys may need to be re-registered too.

  6. 6

    Test everything before we leave

    We check that the key turns, starts the engine and, where applicable, that remote lock and unlock functions work. You should leave with a key you have seen working, not one we hope will work.

Need transponder key programming in Temple City?

24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.

Call (323) 997-8867

What affects the price

  • Vehicle make, model and year, since some systems are far more involved to program than others.
  • Key type: a basic transponder key, a flip key, and a push-to-start smart key differ in hardware and in programming steps.
  • Whether you have a working key already (adding a spare) or have lost every key, which changes the work required.
  • How many keys you want programmed in one visit.
  • Whether the key blade also needs to be cut or the ignition or door lock has an issue.
  • Time of day and location, since we are available around the clock and travel to you.

Why Temple City chooses us

  • Fully mobile: we program the key at your car, so you are not paying for a tow to get to a shop.
  • Available 24/7, which matters when a key goes missing late at night or before an early commute.
  • In business since 1987, with David Shar as owner and lead technician.
  • We verify ownership before programming, which keeps your vehicle safe from misuse.
  • We test the key and remote functions before we finish, and explain what we did.
  • We talk through options honestly, including whether a spare key now is smarter than waiting for a lockout later.

Transponder Key Programming across Temple City

Temple City is a quiet, residential valley-floor city, and most of the cars we see programmed here live in driveways and carports at 1950s and 1960s ranch homes, with more and more parked at new townhomes and small apartment buildings. In neighborhoods like Mission View Acres and the Camellia area, a lost key often means the car is simply stuck at home, which is why coming to you makes sense. Call (323) 997-8867 and we will meet you at the vehicle in ZIP code 91780.

Downtown Las Tunas Drive is a walkable small-business corridor, and it brings its own key situations: an employee who lost the only key to a work vehicle, a delivery van that needs a spare, or a shopper whose key fell somewhere between a restaurant and the parking lot. We can also help around Temple City Park and Live Oak Park, where a key can disappear during a weekend game or a family afternoon.

During events like the annual Camellia Festival, when parking is tight and the day is busy, a lost key is especially unwelcome. We reach Temple City by way of Rosemead Blvd (SR-19), Las Tunas Dr, Baldwin Ave, Lower Azusa Rd and Temple City Blvd, and we are available day and night.

Locked out or need a locksmith now?

24/7 Mobile Locksmith across Greater Los Angeles & Ventura County. We answer 24/7.

Call (323) 997-8867

Other Temple City locksmith services

See all of our Temple City services, or our citywide transponder key programming page.

Transponder Key Programming in Temple City — FAQs

What is transponder key programming?
Many vehicles have a small chip in the key that communicates with the car's immobilizer. Programming registers that chip with the car so the engine will start. A key that is only cut, without programming, will usually turn in the ignition but not start the car.
Can you program a key if I lost all my keys in Temple City?
In most cases, yes. An all-keys-lost situation takes more work than copying an existing key, but we can typically handle it at your vehicle. Call (323) 997-8867 with your make, model and year and we will explain what to expect.
Do I need to tow my car to you?
No. We are fully mobile and there is no storefront to visit. We come to your car anywhere in Temple City, including home driveways and business lots along Las Tunas Drive.
Is it cheaper to get a spare key before I lose the last one?
Generally, adding a key when you still have a working one is simpler than an all-keys-lost job. We cannot quote a price here, but call (323) 997-8867 and we can explain what affects the cost.
Do you offer service at night or on weekends?
Yes. We are available 24/7, including nights, weekends and holidays. Call (323) 997-8867 whenever you need us.
What do I need to show you before you program a key?
We ask for proof of ownership, usually a photo ID and the vehicle registration or similar paperwork. This is to make sure keys are only made for the person entitled to the car.
Can you program push-to-start or smart keys?
Many of them, yes, though it depends on the make, model and year. Tell us the vehicle details when you call (323) 997-8867 and we will let you know what is possible.
Will the old lost key still start my car?
On many vehicles, a lost key can be removed from the system during programming so it no longer starts the car. Whether that is possible depends on the vehicle, so ask us when you call.
DS

Reviewed by David Shar — Owner & Lead Technician

Crenshaw Lock Company has served Greater Los Angeles & Ventura County since 1987.

Last updated 2026-10-12.

Call (323) 997-8867 · Open 24/7