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Crenshaw Lock

Key Fob Replacement in Duarte · 24/7 mobile

Key Fob Replacement in Duarte, California

Crenshaw Lock Company provides mobile key fob replacement and programming in Duarte, California, available 24/7. We come to your car, home or workplace to replace remote fobs and smart keys. If you have lost or damaged a fob, call (323) 997-8867 to talk it through.

  • Mobile to your Duarte location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
Modern car smart key fob on dark leather
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A key fob rarely fails at a convenient time. In Duarte it tends to happen in a hospital parking structure after a long shift, in a driveway off Mountain Avenue with groceries in hand, or at a trailhead lot near Fish Canyon Falls when the sun is going down. Modern remotes and proximity keys carry electronics that have to be matched to your specific vehicle, so a replacement is more than cutting a piece of metal.

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 storefront to drive to and no need to tow a car you cannot start. Our technician comes to wherever the vehicle is parked and handles the replacement and programming on site.

This page explains how a fob replacement works, what affects the cost, and what to have ready when you call. Whether you lost your only fob, cracked a case, or have a smart key that has stopped responding, the first step is a phone call to (323) 997-8867 so we can ask a few questions about your vehicle.

How it works in Duarte

  1. 1

    Tell us about the vehicle

    When you call, we ask for the make, model, and year, and whether the car uses a flip key with remote, a push-button remote, or a proximity smart key with push-button start. We also ask whether you still have any working key. This tells us what type of replacement and programming is involved.

  2. 2

    We come to you

    Because we are fully mobile and available around the clock, we travel to your location, whether that is a driveway in Butler or Cotter, an apartment lot near the A Line, or a parking area near City of Hope. You do not need to move the car.

  3. 3

    Verify ownership

    Before creating a new key, we confirm that you are the rightful owner. Expect to show identification and some proof that the vehicle is yours, such as registration or insurance paperwork. This protects you and is standard good practice.

  4. 4

    Cut and program the replacement

    We match the new fob to your vehicle, cutting an emergency or flip key blade if your fob uses one, and programming the electronics to communicate with the car. When the situation allows, we program on site using professional equipment.

  5. 5

    Test every function

    We test locking, unlocking, trunk or hatch release, panic features where equipped, and starting the engine. If you have other fobs, we can check that they still work after programming.

  6. 6

    Advice on spares and care

    We suggest keeping a spare fob in a safe place at home, and we explain battery care for proximity keys so a dead battery does not catch you off guard again.

Need key fob replacement in Duarte?

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 manufacturers use more complex security systems than others.
  • Type of fob: a basic remote, a flip key with remote, or a proximity smart key each involve different parts and programming.
  • Whether you have a working key to copy from or all keys are lost, which changes the amount of programming work.
  • Whether the fob also needs a mechanical key blade cut.
  • Time of day and your location, since after-hours and farther-out calls involve different logistics.
  • Whether you want one replacement or an additional spare programmed in the same visit.

Why Duarte chooses us

  • Fully mobile service, so we work on your car where it sits instead of asking you to arrange a tow.
  • Operating since 1987 under owner and lead technician David Shar.
  • Available 24/7, which matters when a fob fails late at night or on a weekend.
  • We explain what the job involves before starting, including whether a repair, reprogramming, or full replacement makes sense.
  • We check ownership before making keys, which keeps your vehicle secure.
  • Our work also covers residential and commercial locks, so we can help with a house rekey or deadbolt upgrade on the same call if you need it.

Key Fob Replacement across Duarte

Duarte is a foothill city where cars are part of daily life. Residents in the 1950s and 1960s ranch and tract neighborhoods of Butler and Cotter often park in driveways and on residential streets, while newer condos and apartments near the A Line have shared or garage parking where a failed fob can leave you stuck. In the ZIP code 91010, which covers much of the city, we regularly see the kinds of situations that make a mobile service useful: a car that will not start in a driveway, or a fob lost after a day of errands along Huntington Drive, the old Route 66.

The City of Hope medical campus brings doctors, nurses, researchers, and visiting families into Duarte at all hours. Shift work does not follow a business-hour schedule, and neither does a lost fob. If you are parked near the campus and your smart key stops working, we can come to you instead of leaving you to sort out a tow.

Further up toward Royal Oaks and the Fish Canyon area, in ZIP code 91009 and nearby, homes are more spread out and trailhead parking near Fish Canyon Falls can be quiet, especially after dark. If you lose a fob on a hike along the Duarte Recreational Trail or near Encanto Park, call (323) 997-8867 and we will talk through what is possible. We reach drivers from the I-210 and I-605 corridors to the neighborhoods off Mountain Avenue and Buena Vista Street.

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 Duarte locksmith services

See all of our Duarte services, or our citywide key fob replacement page.

Key Fob Replacement in Duarte — FAQs

Can you replace a key fob if I lost all my keys in Duarte?
In many cases, yes. All-keys-lost situations take more programming work, but we can often handle them at your vehicle. Call (323) 997-8867 with your vehicle details and we will explain what is involved.
Do I need to bring my car anywhere?
No. We are fully mobile and there is no storefront. We come to your car in Duarte, whether at home, work, or a parking lot.
Are you available at night or on weekends?
Yes, we operate 24/7. If your fob fails late at night after a shift near City of Hope, you can call (323) 997-8867 any time.
What do I need to show to get a new fob?
We need to confirm you own the vehicle. Have photo identification and registration or insurance paperwork ready. This is a standard security step.
Is it cheaper to replace a fob than to go to a dealer?
We will not make blanket claims, because it depends on the vehicle. Mobile service can save you the cost and hassle of towing, and we can explain your options before work begins.
My smart key stopped working. Does it need replacing?
Not always. A weak battery is a common cause. Try replacing the battery first, and if the key still does not respond, call us and we can determine whether it needs reprogramming or replacement.
Can you program a spare fob while you are there?
Usually yes. If you have a working key, adding a spare is often simpler than replacing a lost one, and it is a good way to avoid future emergencies.
Which Duarte areas do you serve?
We serve all of Duarte, including Butler, Cotter, Royal Oaks, and the Fish Canyon area, in ZIP codes 91010 and 91009. Call (323) 997-8867 to confirm your location.
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