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Crenshaw Lock

Transponder Key Programming in Pomona · 24/7 mobile

Transponder Key Programming in Pomona, California

Crenshaw Lock Company provides mobile transponder key programming in Pomona, 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 situation.

  • Mobile to your Pomona 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 modern car key is more than a cut piece of metal. Inside the plastic head is a small transponder chip that talks to the vehicle's immobilizer, and if the car doesn't recognize that chip, the engine won't start no matter how perfectly the blade turns in the ignition. Transponder key programming is the work of teaching the car to accept a new key, whether you lost your only one, cracked a worn spare, or simply want a backup before something goes wrong.

In Pomona, the need tends to show up at inconvenient places: a parking structure near Cal Poly Pomona, a lot off Holt Avenue, a driveway in Phillips Ranch, or the shoulder after a long drive on the I-10, SR-60, or SR-57. Because Crenshaw Lock Company is fully mobile, we bring the equipment to wherever the car is sitting. There is no storefront to visit, and no need to get a dead-key vehicle towed to a dealership lot just to get a working key.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. We are available around the clock. Programming procedures vary a great deal between makes, models, and years, so we start by learning what you drive and what keys you still have, then explain plainly what is and isn't possible for your vehicle before any work begins.

How it works in Pomona

  1. 1

    Tell us about the vehicle

    Call (323) 997-8867 and give us the make, model, and year, plus where the car is parked. Let us know whether you have any working key at all. Whether you have a spare changes the programming approach for many vehicles, so this first conversation shapes everything that follows.

  2. 2

    Confirm ownership

    Before we create a key for any vehicle, we ask for reasonable proof that the car is yours or that you are authorized to have a key made for it. This protects you and every other driver in Pomona. It is a standard part of responsible automotive locksmith work.

  3. 3

    Come to the car

    We travel to you in our mobile unit, whether you are at home in Ganesha Hills, at work near Pomona Valley Hospital Medical Center, or in a campus lot. The work happens on site, so the vehicle stays where it is.

  4. 4

    Cut and prepare the key

    If the key needs a blade, we cut it to match your vehicle's lock. Many newer vehicles use a laser-cut or high-security profile, others a standard edge cut, and some use push-button start with a proximity fob. We confirm the right key type for your car before cutting.

  5. 5

    Program to the immobilizer

    Using diagnostic and programming equipment, we register the new transponder with the vehicle's immobilizer. Depending on the vehicle, this may involve connecting through the diagnostic port and following the manufacturer's required sequence for adding a key.

  6. 6

    Test everything

    We check that the key turns the ignition, starts the engine, and operates the door locks and any remote functions. If you ordered multiple keys, we test each one so you leave knowing every key works.

Need transponder key programming in Pomona?

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 systems are far more involved to program than others
  • Key type: a basic transponder key, a laser-cut key, a remote head key, or a smart proximity fob
  • Whether you have a working key to copy or all keys are lost, which changes the amount of work required
  • How many keys you want made in one visit, including a backup spare
  • Whether the key blade must be cut or an existing key can simply be programmed
  • Time of day and the vehicle's location, since we serve around the clock and travel to you

Why Pomona chooses us

  • Fully mobile service: we come to your car in Pomona instead of asking you to arrange a tow
  • Available 24/7, including nights, weekends, and holidays, when a lost key tends to happen
  • In business since 1987 under owner and lead tech David Shar, with decades of hands-on lock and key experience
  • Plain explanations of what your specific vehicle needs, with no pressure and no guessing games
  • Ownership verification on every vehicle key job, which protects you from key-related theft
  • Broader lock expertise, so if a car problem turns out to involve a worn ignition or a broken key, we understand that side of the work too

Transponder Key Programming across Pomona

Pomona is a car-dependent city stitched together by the I-10, SR-60, SR-57, and SR-71, with everyday traffic on Holt Avenue and Garey Avenue. That means a lot of vehicles parked in a lot of different places: curbside near Antique Row on 2nd Street, in the lofts and garages around the Downtown Pomona Arts Colony, on the quiet streets of the Lincoln Park Historic District, and in the driveways of Phillips Ranch tract homes. We have driven to all of these kinds of locations to program keys on site.

Students and staff around Cal Poly Pomona and Western University of Health Sciences often juggle shared vehicles, rentals, and hand-me-down cars, and a lost or damaged transponder key can throw off a whole week. Visitors and vendors heading to Fairplex for the LA County Fair sometimes find themselves stranded with a dead or missing key far from home. In both cases, a mobile visit saves the time of arranging a tow. We serve addresses throughout ZIP codes 91766, 91767, 91768, and 91769, including the Westmont area.

If you are in Pomona and need a chip key programmed, call (323) 997-8867. We will ask about your vehicle, tell you honestly what the job involves, and come to wherever the car is parked.

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 Pomona locksmith services

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

Transponder Key Programming in Pomona — FAQs

What is a transponder key?
It is a key with a small electronic chip in its head. The chip sends a code to the vehicle's immobilizer, and the engine will only start if the code is recognized. Programming is how a new key gets added to the car's list of accepted keys.
Can you program a key if I lost all of mine?
In many cases yes, though it usually involves more steps than copying from a working key. Call (323) 997-8867 with your vehicle's make, model, and year and we will tell you honestly what is possible for it.
Do I need to tow my car to you?
No. We are fully mobile and come to your vehicle anywhere in Pomona, whether that is a driveway, a campus lot, or a roadside near the SR-60. We have no storefront, so everything happens at your location.
Are you available at night or on weekends?
Yes. Crenshaw Lock Company is available 24/7. You can reach us at (323) 997-8867 at any hour, and we can discuss your situation and schedule the visit.
Will you need proof that the car is mine?
Yes. We ask for reasonable proof of ownership or authorization before making a key for any vehicle. This is standard practice for responsible locksmiths and helps prevent vehicle theft.
What affects the cost of programming a key?
Mostly the vehicle, the type of key or fob, whether you have a working key, how many keys you want, and whether a blade must be cut. We explain these factors up front when you call (323) 997-8867.
Is it worth having a spare programmed now?
Usually, yes. Adding a spare while you still have a working key is generally simpler than starting from nothing after every key is lost. A backup can save you an inconvenient, stressful day later.
Can you program keys for more than one vehicle, like a small fleet?
Often we can handle several vehicles in one visit, depending on the makes and models involved. Call us to describe what you have and we will work out a plan that fits your schedule.
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