Open 24/7 · Greater Los Angeles & Ventura County

(323) 997-8867
Crenshaw Lock

Transponder Key Programming in San Fernando · 24/7 mobile

Transponder Key Programming in San Fernando, California

Crenshaw Lock Company provides mobile transponder key programming in San Fernando, California, 24 hours a day, 7 days a week. We come to your vehicle and program chip keys to its immobilizer, so you do not need a tow or a dealer visit. Call (323) 997-8867.

  • Mobile to your San Fernando 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
Open now(323) 997-8867

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 is not recognized, the engine may turn over without starting, or may not crank at all. That is why a copy cut at a hardware counter often opens the door but will not start the car. Programming is the step that teaches the vehicle to accept a new key.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and owner and lead technician David Shar built the business around going to the customer. We are fully mobile. There is no storefront to visit, so the work happens where your car is parked: a driveway off Maclay Avenue, a curb near the San Fernando Mall, or a shopping center lot along San Fernando Road.

San Fernando is a small, walkable city, and plenty of people here rely on one car for work, school runs, and family errands. Losing the only key, or having a worn one finally fail, can disrupt the whole household. This page explains how programming works, what affects the cost, and what to expect when you call.

How it works in San Fernando

  1. 1

    You call and describe the situation

    Call (323) 997-8867 any hour. Tell us the make, model, and year, whether you still have a working key, and where the car is. A spare key in hand is a much simpler job than an all-keys-lost situation, and knowing which one you face helps us prepare.

  2. 2

    We confirm the vehicle and key type

    Not every chip key is the same. Some use a basic fixed-code chip, others use rolling-code or push-button start systems, and some vehicles need a specific key blank. We work out what your car requires before we start so the right key and equipment come to you.

  3. 3

    We come to your vehicle

    Because we are mobile, we travel to your location, whether that is a home near Las Palmas Park, a lot near City Hall, or a roadside spot off I-5 or CA-118. We are available around the clock, and the work is done on site.

  4. 4

    We cut and prepare the key

    If you need a new key, we cut the blade to match your locks, using the door or ignition if there is no existing key to copy. The transponder chip is then matched to the key so it is ready to be introduced to the car.

  5. 5

    We program the key to the immobilizer

    Using professional programming equipment, we connect to the vehicle and register the new key. Depending on the model, that may include adding a key alongside existing ones or setting up a replacement after all keys are lost.

  6. 6

    We test everything before we finish

    We check that the key turns the lock, starts the engine, and that remote functions work if the key has them. You should leave with a key you trust, and we recommend having a spare made so you are not stranded again.

Need transponder key programming in San Fernando?

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 manufacturers use more complex immobilizer systems than others
  • Whether you have a working key to copy or all keys are lost, which changes the amount of work involved
  • The type of key: a basic chip key, a remote-head key, a flip key, or a push-button smart key
  • Whether the key blade needs to be cut from scratch or an existing key can be duplicated
  • The number of keys you want programmed in one visit, such as a spare alongside the replacement
  • Time of day and exact location, since we serve nights, weekends, and holidays and travel to you

Why San Fernando chooses us

  • Fully mobile service, so your car does not have to be towed to a shop or dealership
  • Available 24/7, including late nights and weekends when a dead key leaves you stuck
  • Serving Greater Los Angeles and Ventura County since 1987, with owner David Shar leading the work
  • Both the key and the programming handled in one visit instead of being split between different providers
  • Honest guidance on whether you need a new key, a spare, or a repair to a failing one
  • Familiarity with the older neighborhoods and tight downtown streets around San Fernando, which helps us reach parked vehicles efficiently

Transponder Key Programming across San Fernando

San Fernando is a compact city of about 2.4 square miles, entirely surrounded by the City of Los Angeles, and known as The Mission City. Despite its small size, it is fully reachable by road, and we work throughout it. In Downtown, around the San Fernando Mall, Truman Street, and San Fernando Road, cars are often parked on the street while owners shop, work, or run a storefront. If a key stops starting your car there, we can come to the curb and program a replacement on the spot.

Residential areas bring their own routines. In the Las Palmas Park neighborhood, many homes are early-20th-century bungalows and Spanish-style houses with driveways or street parking, and families often share a vehicle. The same applies near Layne Park and the Recreation Park area, where cars sit at the curb during weekend games and gatherings. If a spare key was never made, or the only chip key was lost at the park, we can program a new one without you leaving the neighborhood.

We serve ZIP code 91340 and the surrounding area, including drivers who commute along I-5, CA-118, Brand Boulevard, and Maclay Avenue, and those visiting Lopez Adobe or the area near Mission San Fernando Rey de Espana in neighboring Mission Hills. Wherever you are parked in San Fernando, 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.

Call (323) 997-8867

Other San Fernando locksmith services

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

Transponder Key Programming in San Fernando — FAQs

What is a transponder key?
It is a key with a small electronic chip in the head. The car's immobilizer reads the chip's code, and the engine will only start if the code is recognized. This helps prevent theft by hot-wiring or by using a simple copied blade.
Can you program a key for my car in San Fernando without towing it?
Yes. We are fully mobile and come to your vehicle, whether it is at home near Las Palmas Park, downtown by the San Fernando Mall, or elsewhere in the city. Call (323) 997-8867 to get started.
I lost all my keys. Can you still make one?
In many cases, yes. An all-keys-lost situation usually takes more work than copying a working key, but it is something we handle on site. Call (323) 997-8867 with your vehicle details and we will explain what to expect.
Why won't my duplicate key start the car?
A key cut at a hardware counter may match the lock but has no programmed chip, or has a chip the immobilizer does not recognize. The blade can open the door, but the car will not start until the key is properly programmed.
Do you offer transponder key programming at night or on weekends?
Yes. We operate 24 hours a day, 7 days a week, including holidays. If your key fails late at night or on a weekend, you can reach us at (323) 997-8867.
How much does transponder key programming cost?
The price depends on the vehicle, the type of key, whether you have a working key, how many keys you need, and when and where we are called out. We prefer to discuss your situation on the phone so we can explain what applies to you.
Should I make a spare key while you are there?
We recommend it. Adding a spare during the same visit is usually simpler than starting over later, and it protects you from being stuck if your only key is lost or fails.
Do you have a shop I can visit in San Fernando?
No. Crenshaw Lock Company is mobile only, so there is no storefront. We bring the equipment to your car, wherever it is parked in San Fernando or the surrounding area.
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