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Crenshaw Lock

Transponder Key Programming in La Verne · 24/7 mobile

Transponder Key Programming in La Verne, California

Crenshaw Lock Company provides 24/7 mobile transponder key programming in La Verne, California. We come to your car, program a chip key to its immobilizer, and test it before we leave, whether you are at home, work, or stranded. Call (323) 997-8867.

  • Mobile to your La Verne 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 is more than a cut piece of metal. Inside the plastic head sits a small chip that talks to your vehicle's immobilizer, and if the car does not recognize that chip, the engine will not start, no matter how perfectly the blade turns in the ignition. Programming is the step that teaches the car to accept a new key. In La Verne, we are usually called for it after someone has lost their only key, snapped a worn one, or bought a replacement online that turns out not to be coded to the vehicle.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and David Shar leads the work. We are fully mobile. There is no shop to tow your car to and no storefront to visit; the equipment comes to wherever the vehicle is parked. That matters a lot with an all-keys-lost situation, because a car that cannot start should not have to be moved just to get a key made.

Whether you live in a Craftsman near Old Town La Verne, rent near the University of La Verne, or park in one of the foothill developments toward Marshall Canyon, the process is the same: we identify the vehicle, confirm you are authorized to have a key made, cut and program the key, and make sure it starts the car and operates the doors as it should. We are available around the clock, so a dead-end evening after a Foothill Blvd errand does not have to wait until morning.

How it works in La Verne

  1. 1

    You call and describe the situation

    Call (323) 997-8867 and tell us the make, model, and year, how many working keys you have left (if any), and where the car is. A lost-key situation and an add-a-spare situation are handled differently, so these details help us bring the right equipment.

  2. 2

    We come to the vehicle

    Because we are mobile only, we drive to you, whether the car is in a driveway off Bonita Ave, in a student parking area, or on a side street near Fruit St. Nothing needs to be towed for a key job in most cases.

  3. 3

    Ownership is verified

    Before making a key for a vehicle, we ask for proof that it is yours, typically a photo ID along with registration or title information. This protects you and keeps keys from ending up in the wrong hands.

  4. 4

    The key is cut and prepared

    We cut the blade to your vehicle's key code or by working from the lock, and match the correct chip type to your make and model. Some vehicles use a standard chip key, while others use a key with a built-in remote.

  5. 5

    The chip is programmed to the immobilizer

    Using diagnostic programming equipment connected to the car, we register the new key with the vehicle's immobilizer. When the car supports it, we can also add a spare or remove a lost key from the system so it no longer starts the car.

  6. 6

    We test everything before leaving

    We start the engine, test the door locks and any remote buttons, and confirm the key works from a cold start. You should leave with keys you can trust, not a guess.

Need transponder key programming in La Verne?

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 have more involved security that takes more time and specialized equipment.
  • All keys lost versus adding a spare: when no working key exists, the car usually has to be accessed and programmed from scratch, which is generally more involved than cloning or adding to an existing key.
  • Type of key: a basic transponder key, a key with remote buttons, and a push-button smart key are different parts with different costs.
  • Time of day and location: we are available 24/7, and late-night or hard-to-reach calls can be a factor in how a job is quoted.
  • Whether the key needs to be cut: laser-cut, edge-cut, and standard-cut blades require different machines and different amounts of work.
  • Key quantity: programming two keys in one visit is often more efficient than coming back later for a second one.

Why La Verne chooses us

  • Fully mobile, 24/7: we come to your vehicle in La Verne at any hour, with no storefront and no towing required for most key jobs.
  • Serving the area since 1987: decades of experience in Greater Los Angeles and Ventura County means we have seen a wide range of vehicles and key systems.
  • Owner-led: David Shar leads the work, so questions about your car's key system get answered by someone who actually does the job.
  • Verification first: we confirm ownership before making a key, which protects you if your vehicle ever goes missing or changes hands.
  • Tested before we leave: every key is checked for starting, door function, and remote operation while we are still with you.
  • Spare and lost-key cleanup: when possible, we help add a spare and can remove a lost key from the system, so a missing key is not a lasting risk.

Transponder Key Programming across La Verne

La Verne is a mix of older streets and newer developments, and vehicle key needs follow that mix. Around Old Town La Verne, along D Street and Bonita Ave, residents often park on the street or in short driveways beside early-1900s Craftsman homes, and a lost key can leave a car stuck right at the curb. We can program a replacement there without needing the vehicle moved.

Near the University of La Verne, student and renter vehicles are common, and keys are easily lost during moves, term starts, and busy weeks. Up in North La Verne and the Marshall Canyon foothills, newer developments mean many households have multiple late-model cars with chip keys, where a spare is cheaper and easier to add before the last key disappears. Commuters on SR-210 and SR-57, or people heading to Fairplex or Brackett Field, can also call when a key fails somewhere away from home.

We serve all of ZIP code 91750 and the surrounding communities, around the clock. If you are anywhere in La Verne and need a transponder key programmed, 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.

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Other La Verne locksmith services

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

Transponder Key Programming in La Verne — FAQs

Can you program a transponder key if I have lost all my keys in La Verne?
In most cases, yes. An all-keys-lost job is more involved than adding a spare, but we come to the vehicle, verify ownership, and program a new key to the immobilizer on site. Call (323) 997-8867 and tell us the make, model, and year.
Do you have a shop I can drive to?
No. Crenshaw Lock Company is fully mobile, so there is no storefront. We travel to your vehicle anywhere in La Verne, including Old Town, the University of La Verne area, and the foothill neighborhoods.
Are you available at night or on weekends?
Yes, we are available 24/7. If a key fails late in the evening or you are locked out on a weekend, call (323) 997-8867.
Will you need proof that the car is mine?
Yes. We ask for photo ID and proof of ownership or authorization, such as registration or title information, before making a key. It is a standard safeguard that protects you.
Can you add a spare key before I lose my last one?
Yes, and that is usually the easier route. Having an existing working key often makes programming a spare more straightforward than starting from nothing.
Can a lost key be removed from my car's system?
On many vehicles, yes. When the car supports it, we can reprogram the system so a lost key no longer starts the engine. Ask us when you call, since it depends on the vehicle.
I bought a key online. Can you program it?
Often we can, but it depends on whether the chip and key type match your vehicle. Some online keys are the wrong type or are locked and cannot be programmed. Call (323) 997-8867 and we can talk through it before you spend more.
How is the price determined?
It depends on your vehicle, the type of key, whether you have a working key, and the time and location of the call. We explain the factors and give you a clear quote before we begin work.
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