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Crenshaw Lock

Transponder Key Programming in Montebello · 24/7 mobile

Transponder Key Programming in Montebello, CA

Crenshaw Lock Company provides mobile transponder key programming in Montebello, California, 24 hours a day, 7 days a week. We come to your vehicle and program chip keys to its immobilizer, so you never need a tow. Call (323) 997-8867 to get started.

  • Mobile to your Montebello 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 crank without starting or not turn over at all. That's why a key cut at a hardware counter can open the door yet never start the car. Programming is the step that teaches the vehicle to accept a new key.

In Montebello, this problem tends to show up at inconvenient moments: in the lot at The Shops at Montebello after a shift, in a driveway off Montebello Blvd on a weekday morning, or when you've lost your only key and the car sits in a garage in the Montebello Hills. Because Crenshaw Lock Company is fully mobile, we bring the equipment to wherever the vehicle is parked. There is no storefront to visit and no need to move a car that can't start.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. Transponder work rewards that experience, because it is part mechanical and part electronic. The key blade has to be cut accurately, and the chip has to be paired correctly. We explain what's involved before we start, so you know what to expect from the visit.

How it works in Montebello

  1. 1

    You call and describe the situation

    Call (323) 997-8867 and tell us the make, model, and year, whether you have a working key, and where the car is parked. Whether you're in North Montebello, near Grant Rea Park, or along Washington Blvd, we plan the visit around your location. We are available around the clock.

  2. 2

    We come to the vehicle

    Our technician drives to you with cutting and programming equipment. Nothing needs to be towed or taken to a dealership. If the car is in a garage, a driveway, or a mall parking structure, we work where it sits.

  3. 3

    We confirm ownership

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

  4. 4

    We cut and prepare the key

    If you need a new key blade, we cut it to match your vehicle's lock. For many vehicles this can be done without an original key. We also check that the transponder chip is compatible with your car's system before we attempt pairing.

  5. 5

    We program the chip to the immobilizer

    Using diagnostic equipment, we connect to the car and register the new key. Depending on the vehicle, existing keys may be kept or re-registered. We then test the key in the ignition and the door locks.

  6. 6

    We test everything before we leave

    We start the engine, check remote functions where applicable, and confirm every key you plan to carry works. If you have questions about spare keys, we answer them before the visit ends.

Need transponder key programming in Montebello?

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 more involved to program than others.
  • Whether you still have a working key or all keys are lost, which changes the steps required.
  • Type of key: a basic transponder key, a flip key, or a smart or proximity key each involve different parts and procedures.
  • Number of keys you want programmed during the same visit.
  • Time of day and your location within the service area, since we work at all hours.
  • Whether the key blade must be cut or an existing blade can be used.

Why Montebello chooses us

  • Fully mobile service: we come to your car in Montebello instead of asking you to tow it anywhere.
  • In business since 1987, with owner David Shar leading the work, not a rotating call center.
  • Available 24/7, which matters when the key problem happens late at night or on a weekend.
  • We explain the process and the factors that shape the cost before starting, with no surprise add-ons.
  • We handle both key cutting and chip programming, so you don't have to coordinate two separate vendors.
  • We verify ownership before making keys, which keeps the service responsible and secure.

Transponder Key Programming across Montebello

Montebello's car culture follows its geography. Residents in the older flats of the 90640 ZIP code, with their 1920s to 1950s Spanish Revival and Craftsman homes, often park in narrow driveways or on the street, and cars there tend to be a mix of long-owned vehicles and newer family models. Lost keys on those streets are common, and we bring everything we need to the curb.

In the newer hillside developments of Montebello Hills, many homeowners keep vehicles behind gates and garage doors. If the only key is lost or the fob stops working, we can work in the driveway or garage so you're not stranded. North Montebello and the adjacent Montebello Gardens area have a similar mix of driveways and street parking where mobile service is the easiest option.

Commuters and shoppers also run into trouble around I-5, I-710, Washington Blvd, and Beverly Blvd. A key that fails in the lot at The Shops at Montebello, near Grant Rea Park, or after an event at Quiet Cannon doesn't have to mean a tow. Call (323) 997-8867 and we'll meet you where the car 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 Montebello locksmith services

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

Transponder Key Programming in Montebello — FAQs

What is a transponder key?
It is a car key with a small chip inside the head that communicates with your vehicle's immobilizer. The car will only start if it recognizes the chip's code, which is why programming is required in addition to cutting the key.
Can you program a key if I've lost all my keys?
In many cases, yes. We can often cut and program a new key for a vehicle with no working key, depending on the make and model. Call (323) 997-8867 with your vehicle details and we'll tell you what to expect.
Do I need to tow my car to you?
No. We are fully mobile and have no storefront. We come to your vehicle anywhere in Montebello, whether it is in a driveway, a garage, or a parking lot.
Why won't my copied key start the car?
A key that was only cut mechanically can turn the lock but lacks the programmed chip, so the immobilizer blocks the engine. Having the chip programmed to the car fixes this, and we can do it on-site.
Do you offer service at night and on weekends?
Yes. Crenshaw Lock Company is available 24 hours a day, 7 days a week. Call (323) 997-8867 at any hour and we'll arrange service.
Will you ask me to prove I own the car?
Yes. We ask for reasonable proof of ownership or authorization before making a key. It protects owners and is a normal part of professional automotive locksmith work.
Can you program keys for a car in a gated hillside driveway or garage?
Generally yes, as long as we can reach the vehicle. If you are in Montebello Hills behind a gate, let us know when you call so we can plan access.
How is the price determined?
It depends on the vehicle, the type of key, whether you have a working key, and how many keys you need. We talk through those factors before we begin so you know what applies to 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