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Crenshaw Lock

Transponder Key Programming in Norwalk · 24/7 mobile

Transponder Key Programming in Norwalk, California

Crenshaw Lock Company provides mobile transponder key programming in Norwalk, California, 24 hours a day, 7 days a week. We come to your vehicle and program chip keys to its immobilizer, whether you lost your only key or need a spare. Call (323) 997-8867.

  • Mobile to your Norwalk 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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A transponder key looks like an ordinary car key, but inside the plastic head sits a small chip that talks to your vehicle's immobilizer. If the car does not recognize the chip's code, the engine will not run, even when the blade turns the ignition perfectly. That is why a copy cut at a hardware counter often opens the door yet will not start the car. The key has to be cut correctly and then programmed to the vehicle.

In Norwalk, most of the calls we hear about come from everyday situations: a commuter who drives I-5 or I-605 and has just one key left, a student parking near Cerritos College who dropped a fob somewhere on campus, or a family whose spare vanished years ago. Being down to a single working key is the best time to add another, because duplicating from a key in hand is generally simpler than starting from nothing.

Crenshaw Lock Company has served Los Angeles and Ventura County since 1987, and owner David Shar leads the work. We are fully mobile. There is no shop to tow your car to and no storefront to visit. We bring the equipment to your driveway, apartment parking space, workplace lot, or the roadside, and we handle the cutting and programming on site.

How it works in Norwalk

  1. 1

    Call and describe the vehicle

    Phone (323) 997-8867 any hour and tell us the make, model, and year, and whether you have a working key, no keys, or a damaged one. These details tell us what kind of chip and programming approach the car is likely to need.

  2. 2

    We come to you in Norwalk

    Our technician drives to wherever the car is parked, whether that is a driveway on a tract-home street, an apartment lot off Pioneer Blvd, or a parking space near the Metro C Line station. Because we are mobile, the vehicle never has to be towed.

  3. 3

    Confirm ownership

    Before we create a key for any vehicle, we ask for reasonable proof that you own it or are authorized to have access, such as registration and photo ID. It protects you and keeps keys out of the wrong hands.

  4. 4

    Cut the key blade

    If you need a new key, we cut the blade to match the vehicle's lock using the car's key code or by working from the lock itself when no original key is available. Cutting happens on site.

  5. 5

    Program the transponder

    We use diagnostic programming equipment to register the new chip with the immobilizer. Depending on the vehicle, existing keys may remain valid or the system may need to be reset to recognize all keys together.

  6. 6

    Test everything before we leave

    We try the key in the door and ignition, start the engine, and test any remote buttons. You should see every function working before we call the job done.

Need transponder key programming in Norwalk?

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 immobilizer systems are far more involved to program than others.
  • Whether you have a working key to copy or all keys are lost, which changes the work needed to generate a new one.
  • The type of key: a basic chip key, a flip key, a remote head key, or a smart proximity fob each carry different hardware.
  • Number of keys you want programmed in the same visit, including a spare.
  • Time of day and the location of the vehicle, since we are available around the clock and travel to you.
  • Whether the vehicle has a damaged ignition or door lock that needs attention before the key will work.

Why Norwalk chooses us

  • Fully mobile service: the work is done where your car sits, with no towing to a shop.
  • In business since 1987, with the owner, David Shar, leading the work.
  • Available 24/7, which matters when a lost key strands you late at night.
  • We cut and program in the same visit, so you are not bounced between a key cutter and a dealer.
  • We verify ownership before making keys, which protects you if someone else ever tries to get a key to your car.
  • We talk through price factors upfront rather than surprising you after the work is done.

Transponder Key Programming across Norwalk

Norwalk is a car-dependent city. Residents move between the I-5 and I-605 corridors and along Firestone Blvd, Pioneer Blvd, and Rosecrans Ave every day, and a dead key can disrupt a whole household's schedule. We serve all of Norwalk across ZIP codes 90650, 90651, and 90652.

In the Carmenita area along Carmenita Road, many homes are single-story ranch houses with driveways and street parking, which makes on-site programming easy. Around the Norwalk Civic Center and Town Square district, drivers park in shopping and office lots, and we can meet you there, including after hours when a shop employee or visitor is left without a working key.

Near Cerritos College and Studebaker Road, students and staff often park for long stretches, and a misplaced fob can mean a stranded car. Commuters using the Norwalk Metro C Line station or the Norwalk/Santa Fe Springs Metrolink station sometimes call after returning to a car with a lost or broken key. Wherever you are in Norwalk, call (323) 997-8867 and we will come to the vehicle.

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 Norwalk locksmith services

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

Transponder Key Programming in Norwalk — FAQs

What is a transponder key?
It is a car key with a small chip in the head that sends a code to your vehicle's immobilizer. The engine will only start if the code matches, which is why a plain cut key often will not run the car.
Can you program a key if I lost all of mine in Norwalk?
In many cases, yes. We can cut a new blade and program a new chip to the vehicle on site. Call (323) 997-8867 with your make, model, and year so we can tell you what to expect.
Do I need to tow my car to you?
No. We are fully mobile and come to your car in Norwalk, whether it is at home, at work, or on the roadside. There is no storefront to visit.
Is it cheaper than going to a dealer?
We cannot promise that for every vehicle, but mobile service saves you towing and a trip, and we explain the price factors before we begin. Call (323) 997-8867 to discuss your situation.
Will you ask for proof that the car is mine?
Yes. We ask for reasonable proof of ownership or authorization, such as registration and photo ID, before making a key. This protects vehicle owners.
Can you program a spare key even if I still have one that works?
Yes, and it is often the simplest situation. Having a spare made before you lose your last key is typically less hassle than starting from zero.
Do you work at night or on weekends?
We are available 24/7, including nights, weekends, and holidays, and we come to you anywhere in Norwalk.
Can you also fix a key that cuts fine but will not start the car?
Often, yes. If a copy opens the door but will not start the engine, the chip likely was not programmed to the immobilizer. We can check and program it on site.
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