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Crenshaw Lock

Transponder Key Programming in Porter Ranch · 24/7 mobile

Transponder Key Programming in Porter Ranch, California

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

  • Mobile to your Porter Ranch 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 key, but inside the plastic head is a small chip that talks to your vehicle's immobilizer. If the car does not recognize the chip's code, the engine will not start, even if the blade turns the ignition freely. Programming is the step that teaches the car to accept a new key, and it is why a hardware-store copy usually will not start a modern vehicle.

In Porter Ranch, most of the vehicles we see are newer models parked in garages, driveways, and gated communities along the northwest rim of the Valley. Families here often own several cars, and a lost key, a cracked key head, or a dead fob battery that turns out to be a failed chip can leave one of them stranded at home, at the Vineyards, or in a parking lot off Rinaldi St.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead tech David Shar built the business around being fully mobile. We have no storefront for you to drive to. That matters for transponder work, because if you have lost every key, the car often should not be driven or towed at all. We bring the equipment to you, cut and program the key on site, and test it before we leave.

How it works in Porter Ranch

  1. 1

    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 which kind of key your car uses.

  2. 2

    Confirm ownership

    Before we create a key for any vehicle, we ask for reasonable proof that it is yours, such as ID matched to registration or title. It protects you and keeps key programming from being used to take someone else's car.

  3. 3

    Cut the key blade

    If your key uses a cut blade, we cut it to match the vehicle's lock, using the VIN, an existing key, or the lock itself as a reference. Push-button start vehicles use a different style of key, and we sort that out first.

  4. 4

    Program the chip to the immobilizer

    We connect programming equipment to the vehicle and register the new transponder with the car's computer. Depending on the model, we may also add or remove keys so a lost one can no longer start the engine.

  5. 5

    Test everything before we leave

    We check that the key turns the ignition, starts the engine, and operates the door locks and remote functions if applicable. You get to see it work in your own driveway or parking space before the job is done.

Need transponder key programming in Porter Ranch?

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 brands need more involved programming procedures than others.
  • Whether you have a working key to copy from or have lost all keys, which changes how much work is needed to start the process.
  • The type of key: a basic chip key, a remote-head key, a flip key, or a smart key for push-button start.
  • How many keys you need programmed in one visit, including a spare.
  • Whether the blade must be cut as well as the chip programmed, or whether an old key needs to be removed from the vehicle's memory.
  • Time of day and the location of the vehicle, since we operate around the clock and travel to you.

Why Porter Ranch chooses us

  • We are fully mobile, so the key is made where your car is parked rather than requiring a tow to a shop.
  • We have been serving Greater Los Angeles and Ventura County since 1987, so we have seen a very wide range of vehicles and immobilizer systems.
  • Owner David Shar leads the technical work, so the person who knows the trade is accountable for the result.
  • We tell you up front what we need to verify ownership and what the job involves, rather than surprising you partway through.
  • We test the finished key by starting the engine before we leave, and we can also help with related lock issues on the same visit.

Transponder Key Programming across Porter Ranch

Porter Ranch sits against the Santa Susana Mountains, in ZIP codes 91326 and 91327, and its mix of master-planned neighborhoods shapes how key problems happen. In The Oaks of Porter Ranch, a gated community, a lost key can strand a vehicle behind a gate where tow trucks have trouble getting in. In Porter Ranch Estates, large homes often have three or four cars in the garage, and we are often asked to add spare chip keys so every driver in the household has a backup.

Around The Vineyards and the Porter Ranch Town Center area, the typical call is a key lost while shopping or dining, or a fob that stopped working in the parking lot. Residents of the Renaissance and Sorrento tracts commonly call for spare keys after buying a used car whose previous owner only handed over one. We reach these areas by way of Rinaldi St, Sesnon Blvd, Tampa Ave, Corbin Ave, Reseda Blvd, Porter Ranch Dr, Mason Ave, and the Ronald Reagan Fwy (SR-118).

Porter Ranch also has dust and grit blowing in from the hills, and it can wear on key blades and ignition cylinders over time. If your key has started to stick or turn roughly, mention it when you call at (323) 997-8867. A worn ignition can make a newly programmed key feel unreliable, and we would rather check that on the same visit.

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Other Porter Ranch locksmith services

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

Transponder Key Programming in Porter Ranch — FAQs

What is a transponder key and why won't a regular copy start my car?
A transponder key has a small chip in its head that sends a code to your car's immobilizer. A plain copy cut from the blade shape alone has no matching chip, so the engine will not start. The chip has to be programmed to the vehicle.
Can you program a key in Porter Ranch if I have lost all my keys?
Often yes. We come to your vehicle, verify ownership, cut a blade if needed, and program a new key on site. Call (323) 997-8867 and give us the make, model, and year so we can tell you what to expect.
Do you work 24/7 in Porter Ranch?
Yes. Crenshaw Lock Company is available 24 hours a day, 7 days a week and is fully mobile. Call (323) 997-8867 any time and we will talk through your situation.
Do I need to bring my car to a shop?
No. We have no storefront. We bring the cutting and programming equipment to your driveway, garage, or parking space anywhere in Porter Ranch, including inside gated communities when we are given access.
What do you need to verify before making a key?
We ask for reasonable proof that the vehicle is yours, such as ID that matches the registration or title. It is a standard safeguard and protects you from someone else obtaining a key to your car.
Can you program a spare key if I still have one that works?
Yes, and it is usually the simpler situation. Adding a spare while you still have a working key avoids the harder all-keys-lost process. Call (323) 997-8867 to set it up.
Can a lost key be blocked from starting my car?
On many vehicles, yes. During programming we can often set the car to recognize only the keys we register, so a lost key no longer starts the engine. Whether this is possible depends on the vehicle.
Do you program smart keys and key fobs too?
Many of them, depending on the make and model. Push-button start vehicles use different key types than traditional chip keys, so tell us what your car has when you call and we will confirm what we can do.
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