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Crenshaw Lock

Transponder Key Programming in El Segundo · 24/7 mobile

Transponder Key Programming in El Segundo, California

Crenshaw Lock Company provides mobile transponder key programming in El Segundo, California, 24/7. We come to you and program chip keys to your vehicle's immobilizer, whether you lost every key or just need a spare. Call (323) 997-8867 to talk through your vehicle and get started.

  • Mobile to your El Segundo 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 modern car key is more than a cut piece of metal. Inside the plastic head is a small transponder chip that exchanges a coded signal with the vehicle's immobilizer. If the car does not recognize that signal, the engine will not start, even when the blade turns the ignition perfectly. That is why a copy from a hardware-store kiosk sometimes opens the door but leaves you stranded.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead tech David Shar has watched vehicle security change from simple cut keys to coded chips and push-button systems. We are fully mobile. There is no shop to drive to and no tow required in most cases. We bring the equipment to the car, wherever it is parked, at any hour.

In El Segundo, this work comes up in a few familiar ways. Someone who commutes to the aerospace and corporate campuses loses their only key. A resident on the west-side grid wants a spare before something goes wrong. A fleet or shared vehicle needs another key added after a staffing change. Whatever the situation, we start by identifying exactly what your vehicle needs, then program it properly and test it before we leave.

How it works in El Segundo

  1. 1

    You call and describe the vehicle

    Call (323) 997-8867 and tell us the make, model, and year, and whether you still have a working key. That tells us whether we are adding a spare or starting from zero, and what kind of key your car uses.

  2. 2

    We come to your location

    We are fully mobile and available 24/7, so we meet you where the car is: a driveway near Main Street, a lot in Smoky Hollow, a spot at work, or the side of the road. There is no storefront to visit.

  3. 3

    Verify ownership

    Before we create a key for a vehicle, we confirm that you are the owner or authorized user. This protects you and is a normal, responsible part of the job.

  4. 4

    Cut and prepare the key

    If the key needs a blade, we cut it to your vehicle's code or to the ignition and doors. We match the right chip type for your vehicle so it can be recognized by the immobilizer.

  5. 5

    Program to the immobilizer

    We connect to the vehicle and register the new transponder key. Depending on the model, existing keys may need to be re-registered during this process, and we explain that up front.

  6. 6

    Test everything

    We check that the key starts the engine, turns the ignition, works the locks, and that any remote functions respond. You see it work before we call the job finished.

Need transponder key programming in El Segundo?

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

Call (323) 997-8867

What affects the price

  • Make, model, and year: some vehicles use simple chip systems while others use more complex coded or encrypted ones.
  • Whether you have a working key: adding a spare is generally simpler than creating a first key when every key is lost.
  • Key type: a basic transponder key differs from a remote-head key, flip key, or smart proximity key.
  • Whether the key blade must be cut, and how, including laser-cut or high-security profiles.
  • Time of day and location: after-hours or hard-to-reach service can affect the overall quote.
  • Number of keys programmed in one visit, since additional keys are often more efficient to do together.

Why El Segundo chooses us

  • Fully mobile since 1987: we come to the car instead of asking you to tow it anywhere.
  • Owner-led experience: David Shar oversees the work, so the knowledge behind it is not just a call-center script.
  • Available 24/7, which matters when a lost key strands you after a late shift or an early commute.
  • We explain what your specific vehicle needs, including whether existing keys must be re-registered, before we begin.
  • We test the finished key fully and do not leave until the car starts and the locks respond.
  • Honest about limits: if a vehicle needs something we cannot responsibly do on-site, we tell you plainly.

Transponder Key Programming across El Segundo

El Segundo is a compact town with a real split personality. West of Sepulveda Blvd, the residential grid is full of 1920s to 1940s bungalows and 1950s homes, where cars often live in driveways or on the street. In neighborhoods like the West Side residential grid, a lost key can mean a stuck car at the curb, and we can program a replacement right there in the 90245 ZIP code without moving the vehicle.

East of Sepulveda, the picture changes to corporate and aerospace campuses, the Los Angeles Air Force Base, Mattel's headquarters, and the creative and light-industrial blocks of Smoky Hollow. People who work there park in large lots and garages all day, and a misplaced key can end a shift badly. We can meet you at a workplace lot, or near Downtown / Main Street if you were having dinner or heading to the Old Town Music Hall.

Much of daily life here runs along I-105, Imperial Hwy, Rosecrans Ave, El Segundo Blvd, and Aviation Blvd, and breakdowns of the key kind do not pick convenient places. Whether you are near The Point shopping center, the Toyota Sports Performance Center, or elsewhere in town, call (323) 997-8867 and we will come to you.

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 El Segundo locksmith services

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

Transponder Key Programming in El Segundo — FAQs

What is a transponder key?
It is a key with a small chip inside the head that sends a coded signal to your vehicle's immobilizer. The car will only start if it recognizes that code, which is why a plain cut key often will not work on newer vehicles.
Can you program a key if I lost all my keys?
In many cases, yes. It is more involved than adding a spare, but we can often create a new key on-site. Call (323) 997-8867 with your vehicle details and we will tell you what to expect.
Do I need to tow my car to you?
Usually not. We are fully mobile and have no storefront, so we come to your car in El Segundo, whether it is at home, at work, or parked on the street.
Is it cheaper to go to the dealer?
It depends on the vehicle and situation, so we will not make blanket claims. Dealers often require towing and an appointment, while we come to you 24/7. Call (323) 997-8867 for a quote based on your car.
Will I need to prove I own the vehicle?
Yes. We verify ownership or authorization before making a key. It is standard practice and protects you from someone else getting a key to your car.
Can you program a spare key before I lose the only one?
Yes, and it is a smart move. Adding a spare while you still have a working key is generally simpler than starting from nothing after every key is lost.
Do you work late at night or on weekends?
Yes. We are available 24/7, including nights, weekends, and holidays, which helps if you are stuck after work near the corporate campuses or Main Street.
Can you also program remotes and smart keys?
We work with many remote-head, flip, and proximity key types, though it depends on the vehicle. Tell us your make, model, and year when you call so we can confirm what is possible.
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