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Crenshaw Lock

Transponder Key Programming in Signal Hill · 24/7 mobile

Transponder Key Programming in Signal Hill, California

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

  • Mobile to your Signal Hill 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
Open now(323) 997-8867

A modern car key is two things in one: a metal blade that turns the ignition, and a small chip that tells the vehicle's immobilizer it is allowed to start. If the chip has not been programmed to the car, the engine may crank and then die, or never turn over at all. Many people discover this only after a hardware store copies the blade and the car still refuses to start.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and we are fully mobile. There is no storefront to visit, and you do not need to tow your car anywhere. In a compact city like Signal Hill, where steep streets, hillside parking and busy surrounding Long Beach traffic can make a tow awkward, having the work done where the vehicle sits is a real convenience.

Transponder programming covers several situations: adding a spare key while you still have a working one, replacing a key after you have lost all of them, replacing a damaged or water-affected fob, and preparing keys for vehicles that pass through a dealership lot. Each of these has different requirements depending on the make, model and year, and we will tell you plainly what your vehicle needs before we start.

How it works in Signal Hill

  1. 1

    Call and describe the vehicle

    Phone (323) 997-8867 and tell us the make, model and approximate year, and whether you have any working key. We will explain what type of key your vehicle uses and what the job involves, so you know what to expect before we head out.

  2. 2

    We come to your location

    Because we are fully mobile and available around the clock, we meet you where the car is, whether that is a driveway on the Hilltop, a street near Discovery Well Park, or a dealership lot on Cherry Avenue.

  3. 3

    Confirm ownership and identify the system

    We ask for reasonable proof that the vehicle is yours, such as registration and identification. Then we identify the immobilizer system and the key type your vehicle requires, which determines the cutting and programming method.

  4. 4

    Cut the key and program the chip

    We cut the blade to match the lock, then use professional diagnostic and programming equipment to register the transponder or fob with the vehicle's computer. If all keys are lost, this often includes creating a brand-new key from the vehicle's data.

  5. 5

    Test everything before we leave

    We test that the key starts the engine, turns the door and ignition smoothly, and that any remote buttons work. If you asked for a spare, we confirm both keys operate properly so you are not left with a key that only half works.

Need transponder key programming in Signal Hill?

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 of the vehicle, since some immobilizer systems are far more involved to program than others
  • Whether you have a working key to copy or have lost every key, which changes how much work the programming requires
  • The type of key: a basic transponder blade, a flip key, or a proximity smart key with push-button start
  • Whether the key blade needs to be cut, including laser-cut or high-security profiles
  • How many keys you need programmed in one visit
  • The time of day and the location of the vehicle, since we serve customers at all hours

Why Signal Hill chooses us

  • Fully mobile service means the programming happens at your car, with no towing to a shop required.
  • Crenshaw Lock Company has been in business since 1987, and owner and lead technician David Shar has decades of hands-on experience with automotive locks.
  • We tell you what your specific vehicle needs before work begins, rather than guessing or upselling.
  • We handle both the physical key cutting and the electronic programming in one visit, so you do not have to coordinate two different providers.
  • We are available 24/7, which matters when a key problem strands you late at night or early in the morning.
  • We work on residential, commercial and dealership situations, so the same team can help with a single family car or a lot of inventory.

Transponder Key Programming across Signal Hill

Signal Hill is a small hilltop city completely surrounded by Long Beach, and its layout shapes how car key problems play out here. On the Hilltop, near Hilltop Park and the summit, many residents park on steep, narrow streets where a tow truck is a hassle and a dead key can leave a car stuck at the curb. Down near the Discovery Well district, close to Discovery Well Park and the site of the 1921 oil discovery, homes and townhomes often come with tight garages and shared parking. Mobile programming means we work right there instead of moving the vehicle. The Panorama Promenade connects those two parks, and plenty of walkers and joggers return to their cars to find a lost or broken fob.

The Cherry Avenue auto corridor is its own world. The Signal Hill Auto Center on Cherry Ave means a steady flow of vehicles that sometimes need a lost-key or spare fob programmed, whether for inventory sitting on the lot or a customer vehicle. We can help with that kind of key work on site. Drivers heading in from I-405, Spring St, Willow St or California Ave can also reach us when a key fails away from home.

If you are in ZIP code 90755 and your transponder key will not start your car, or you need a spare before you lose the only one, call (323) 997-8867. We will talk through your vehicle and come to you, day or 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 Signal Hill locksmith services

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

Transponder Key Programming in Signal Hill — FAQs

What is a transponder key?
It is a key with a small chip inside the head that communicates with your car's immobilizer. The car will only start if the chip's code matches what the vehicle expects. That is why a plain copy of the metal blade usually will not start a modern car.
Can you program a key if I have lost all of my keys in Signal Hill?
In many cases, yes. We can cut a new key and program it to the vehicle even when no working key remains, though the process depends on the make and model. Call (323) 997-8867 with your vehicle details and we will explain what is possible.
Do I need to tow my car to you?
No. We are fully mobile and have no storefront, so we come to your vehicle, whether it is parked on a Hilltop street, in a townhome garage near Discovery Well Park, or on a lot along Cherry Ave.
Is it cheaper to get a spare before I lose my only key?
Generally, adding a spare while you still have a working key is simpler than starting from nothing, because there is less work involved. The final cost still depends on your vehicle and key type, so call (323) 997-8867 to talk through your situation.
Can you program a key fob with remote buttons?
Often yes. Many keys combine the transponder chip with remote lock and unlock buttons, and we can program both functions. Some proximity or push-button start systems have different requirements, which we will check for your specific vehicle.
Do you work with dealerships on Cherry Avenue?
We can help with lost-key and fob programming needs for vehicles on or near the Cherry Ave auto corridor, including inventory or customer cars. Call us to discuss the specifics of what you need.
What do I need to show to prove the car is mine?
We ask for reasonable proof of ownership, typically a valid ID along with the vehicle registration or title. This protects you and keeps the service legitimate.
Are you available at night or on weekends?
Yes. We are available 24/7, including nights, weekends and holidays. Call (323) 997-8867 any time you need a transponder key programmed in Signal Hill.
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