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Crenshaw Lock

Transponder Key Programming in Granada Hills · 24/7 mobile

Transponder Key Programming in Granada Hills, California

Crenshaw Lock Company provides mobile transponder key programming in Granada Hills, California, 24 hours a day, 7 days a week. We come to your vehicle and program chip keys to its immobilizer, so you don't need a tow. Call (323) 997-8867 to talk through your car and situation.

  • Mobile to your Granada Hills 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 car's immobilizer. If the chip's code isn't recognized, the engine may turn over briefly and then shut off, or it won't start at all. That is why a copy cut at a hardware counter often opens the door but never starts the car. Programming is the step that teaches the vehicle to accept a key, and it takes the right equipment and some care.

In Granada Hills, the need usually comes up at inconvenient moments: a lost only key in the parking lot at Granada Hills Charter High School, a spare that stopped working after years in a drawer, or a used car bought with a single key and a shrug from the seller. We are fully mobile and have served Greater Los Angeles and Ventura County since 1987, under owner and lead tech David Shar. There is no storefront to drive to, because we bring the work to wherever the car is parked.

This page explains how programming typically goes, what changes the cost, and what to expect with the vehicles common in a Northern Valley community of commuters. Whether you need an additional spare while you still have a working key or a replacement after losing every key, we can talk it through by phone first so you know what the job will involve before anyone is dispatched.

How it works in Granada Hills

  1. 1

    Call and describe the vehicle

    Phone (323) 997-8867 and tell us the make, model, and year, where the car is parked, and whether you still have any working key. Those details tell us what kind of immobilizer system we are dealing with and what the job will likely require.

  2. 2

    We come to the car

    Because we are fully mobile, we meet you at your home in the neighborhood, your workplace, or a parking spot along Balboa Blvd or Devonshire St. Nothing needs to be towed, and the work happens right at the vehicle.

  3. 3

    Confirm ownership

    Before creating or programming a key, we ask for reasonable proof that the vehicle is yours, such as registration and ID. This protects you and is a normal part of responsible automotive locksmith work.

  4. 4

    Prepare the key

    If you need a new key, we cut the blade to match your vehicle's lock where applicable and prepare a compatible transponder chip or key head. If you already have a key, we check that it is suitable for programming.

  5. 5

    Program to the immobilizer

    We connect programming equipment to the vehicle and register the new key with its immobilizer. Depending on the car, this may add a spare alongside existing keys or involve a full key-learning procedure.

  6. 6

    Test everything

    We test the key in the ignition or start system, plus door operation and any remote functions. You leave knowing every key you were given actually starts the car.

Need transponder key programming in Granada Hills?

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 simpler to program than others
  • Whether you still have a working key (adding a spare) or have lost all keys and a new key must be created from scratch
  • The type of key involved, such as a basic chip key, a flip key, or a proximity smart key, which differ in hardware and procedure
  • Whether the key blade must be cut, including laser-cut or high-security blades
  • Whether remote lock and unlock buttons also need to be programmed
  • Time of day and the location of the vehicle, since we are available around the clock and travel to you

Why Granada Hills chooses us

  • Fully mobile service, so the work is done where your car is parked rather than at a shop you have to reach
  • Available 24/7, including nights and weekends when a dead key situation tends to happen
  • In business since 1987, led by owner and lead tech David Shar
  • We explain the job by phone first and describe what affects the price rather than quoting blindly
  • We test every key we program before we leave, including remotes when applicable
  • We verify ownership before programming, which protects you from key misuse

Transponder Key Programming across Granada Hills

Granada Hills spreads across the northern San Fernando Valley, from the older core along Chatsworth St in Old Granada Hills up toward the foothills near O'Melveny Park. Most residents depend on their vehicles: commutes run along Balboa Blvd, Zelzah Ave, and Hayvenhurst Ave to the I-405, the Ronald Reagan Fwy (SR-118), or the I-5 to the east. When a key fails in this setting, getting the car running again matters quickly, and a mobile service saves the added trouble of arranging a tow.

We work throughout the community, including Old Granada Hills, the Balboa Highlands tract with its Joseph Eichler mid-century homes, and Knollwood near the Knollwood Country Club. Many driveways in these areas hold more than one car, and families often realize they only have a single working key for a vehicle that several people drive. Adding a programmed spare while you still have a key is usually simpler than starting over after losing everything. We serve ZIP codes 91344 and 91394, and can meet you at home, at a parking lot near Rinaldi St or San Fernando Mission Blvd, or near Bee Canyon and Bull Creek.

Foothill conditions also play a role. Heat and dust can be hard on key fobs, worn key blades, and ignition cylinders, and a key that has been sticking in the ignition is worth looking at before it fails altogether. If you notice a worn key, or a car that hesitates to start, call (323) 997-8867 and we can talk through whether programming a fresh key makes sense.

Locked out or need a locksmith now?

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Other Granada Hills locksmith services

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

Transponder Key Programming in Granada Hills — FAQs

What is transponder key programming?
It is the process of registering a chip key with your vehicle's immobilizer so the car recognizes it and allows the engine to start. Without programming, a key may turn the ignition but the car will not run.
Can you program a key at my home in Granada Hills?
Yes. We are fully mobile and come to your car, whether it is in a driveway in Old Granada Hills, a Knollwood street, or a parking lot. Call (323) 997-8867 to arrange it.
I lost all my keys. Can you still help?
In many cases, yes. We can create and program a new key even without an existing working one, though the procedure is more involved than adding a spare. Call (323) 997-8867 with your vehicle details.
Is it cheaper to add a spare before losing my only key?
Generally, adding a spare while you still have a working key is simpler than replacing everything after a total loss. Exact pricing depends on your vehicle and key type, so we explain the factors by phone.
Will a key copied at a hardware store start my car?
A plain cut copy may open the door but will not start a car with an immobilizer unless it contains a properly programmed chip. We can supply and program a key that works.
Do you also program remote buttons?
Often, yes. Depending on the vehicle, remote lock and unlock functions can be programmed along with the key. Tell us about your car when you call so we can confirm.
Do I need to prove I own the vehicle?
Yes. We ask for reasonable proof of ownership, such as registration and identification, before programming a key. It protects you and is standard practice for this work.
Are you available at night or on weekends?
Yes, we operate 24/7. If you are stranded late at night or on a weekend in Granada Hills, call (323) 997-8867 and we will talk through your situation.
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