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Crenshaw Lock

Transponder Key Programming in Glendora · 24/7 mobile

Transponder Key Programming in Glendora, California

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

  • Mobile to your Glendora 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 the plastic head holds a small chip that talks to your car's immobilizer. If the chip's code does not match what the car expects, the engine may crank without starting, or not crank at all. That is why a key copied at a hardware counter often opens the door but will not start the car. Programming is the step that pairs a key's chip with your vehicle.

In Glendora, the need tends to show up in everyday places: a commuter lot near Citrus College, a driveway off Lone Hill Avenue, or a trailhead parking area near Big Dalton Canyon where a spare key was left on a hook at home. Crenshaw Lock Company is fully mobile, so there is no shop to tow your car to. We bring the equipment to wherever the vehicle is parked.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner David Shar leads the work. Whether you have lost every key, need a spare before one goes missing, or have a key that stopped working, we will explain what your particular vehicle needs before we start.

How it works in Glendora

  1. 1

    Call and describe the vehicle

    Phone (323) 997-8867 and tell us the make, model, and year, and whether you still have a working key. That tells us whether this is a spare-key job or an all-keys-lost situation, which are handled differently.

  2. 2

    We come to you in Glendora

    Our service is fully mobile and available around the clock. We meet you at your home, workplace, or wherever the car is parked, so there is no towing to a shop.

  3. 3

    Confirm ownership

    Before cutting or programming a key, we ask for reasonable proof that the vehicle is yours, such as registration and identification. This protects you and every other owner.

  4. 4

    Cut and prepare the key

    If needed, we cut the blade to match your locks and prepare a compatible transponder key or fob. Some vehicles use a standard-style key, others use a laser-cut or push-button type.

  5. 5

    Program to the immobilizer

    We connect our programming equipment to the vehicle and register the new key. Depending on the model, existing keys may be kept or re-registered together.

  6. 6

    Test everything

    We check that the key opens the doors, turns in the ignition, starts the engine, and that any remote buttons work. You should leave with keys you have seen operate the car.

Need transponder key programming in Glendora?

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

Call (323) 997-8867

What affects the price

  • Vehicle make, model, and year, since some brands use more involved security systems than others
  • Whether you have a working key to copy or all keys are lost, which changes the programming method
  • The type of key needed: basic transponder, laser-cut blade, flip key, or proximity smart key
  • How many keys you want programmed in one visit
  • Time of day and how far the vehicle is from our dispatch area, given we work 24/7
  • Whether a key blade must be cut or a damaged ignition or lock must be addressed first

Why Glendora chooses us

  • Fully mobile service: we work at your car instead of asking you to arrange a tow
  • Operating since 1987, with owner David Shar leading the work
  • Open 24/7, which matters when a lost key strands you late at night
  • We explain the scope of work and cost factors before starting
  • We verify ownership before programming, which protects you from theft
  • We test the key fully, including remotes, before we consider the job done

Transponder Key Programming across Glendora

Glendora covers a lot of ground, and cars here end up in varied settings. In North Glendora's foothill neighborhoods, many residents park in long private drives or behind gates, and a car stuck without a working key may be a long walk from help. We come to the driveway. In Glendora Village, drivers parking near the historic downtown shops and restaurants sometimes lose or break a key during a day out, and we can meet you there rather than having you arrange a tow.

South Glendora's post-war tract neighborhoods have plenty of households with multiple drivers and aging family vehicles, where a single remaining key is a real risk. Adding a spare while one still works is usually simpler than replacing everything after the last one is lost. We serve ZIP codes 91740 and 91741, and regularly work around Grand Avenue, Glendora Avenue, and Lone Hill Avenue.

If you commute on the Interstate 210 (Foothill Freeway), park near Citrus College, or head up toward the Big Dalton Canyon trailheads, a key problem can happen far from home. Call (323) 997-8867 any hour and we will plan the visit around where your vehicle actually is.

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 Glendora locksmith services

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

Transponder Key Programming in Glendora — FAQs

What is a transponder key?
It is a key with an embedded chip that sends a code to your car's immobilizer. The engine will only run if the code is recognized, which is why the key must be programmed and not just cut.
Can you program a key if I lost all my keys in Glendora?
Often yes. All-keys-lost situations take a different process than copying from a working key, and the details depend on the vehicle. Call (323) 997-8867 with your make, model, and year and we will tell you what to expect.
Do I need to tow my car to you?
No. We are fully mobile and come to your vehicle, whether it is in a driveway in South Glendora, a lot near Glendora Village, or elsewhere in the city. There is no storefront to visit.
Why did the key from a hardware store not start my car?
A copy may cut the blade correctly but lack a chip programmed to your vehicle. Without that pairing, the key can turn the lock but the immobilizer will not allow the engine to start.
Is it cheaper to add a spare than replace all keys?
Usually it is simpler, since a working key makes programming more straightforward. Exact pricing depends on your vehicle and key type, so call (323) 997-8867 to discuss your situation.
Do you work at night and on weekends?
Yes. We are available 24 hours a day, 7 days a week, including holidays, throughout Glendora and the surrounding area.
Will you ask for proof that the car is mine?
Yes. We ask for reasonable proof of ownership, such as registration and ID, before making or programming a key. It protects owners from unauthorized access.
Can you program smart keys and key fobs too?
Many vehicles with push-button start or remote fobs can be handled, though it depends on the make and model. Tell us the vehicle details when you call and we will 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