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Crenshaw Lock

Car Key Replacement in Monrovia · 24/7 mobile

Car Key Replacement in Monrovia, California

Crenshaw Lock Company provides car key replacement in Monrovia, California, 24 hours a day. Our fully mobile technicians come to your vehicle, then cut and program a new key on site, even if you have no original. Call (323) 997-8867 to talk with us about your car.

  • Mobile to your Monrovia location
  • Available 24/7
  • Price quoted before we start
Call (323) 997-8867or tap to call — we answer 24/7
New flip car key and key blank ready for cutting
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Losing a car key is stressful anywhere, but in Monrovia it tends to happen at inconvenient moments: after dinner on Myrtle Avenue, at the trailhead near Monrovia Canyon Park, or in a parking spot near the Metro A Line station when you are heading home from work. A dead-end like that usually does not call for a tow. In most cases a replacement key can be made right where the car is parked.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, and car key replacement is one of the jobs our mobile technicians handle most. We are fully mobile, which means there is no shop to tow your car to and no storefront to visit. Our technician arrives with key-cutting and programming equipment, works at your vehicle, and tests the new key before leaving.

Whether you have a traditional metal-blade key, a transponder key, a remote-head key, or a push-button smart key, the process starts with the same basics: confirming that you own the vehicle and identifying exactly which key system it uses. From there we cut and program a replacement, and when you have no original key at all, we can generate one from the vehicle itself. Owner and lead tech David Shar built the company on explaining the work plainly, and we keep that approach on every call.

How it works in Monrovia

  1. 1

    Call and describe the situation

    Call (323) 997-8867 any hour. Tell us the make, model, and year of the vehicle, where it is parked in Monrovia, and whether you have any working key. We will explain what is likely involved before anyone drives out.

  2. 2

    We come to the car

    Because we are fully mobile, the technician travels to you, whether that is a driveway in Mayflower Village, a curb in Old Town, or a lot off Huntington Drive. Your car stays where it is.

  3. 3

    Verify ownership

    Before we make a key we ask for proof that the vehicle is yours, typically a photo ID and registration or title. This protects you and every other driver; a locksmith who skips this step is not one to trust.

  4. 4

    Cut the key

    If the car needs a physical blade, we cut it using the vehicle's key code or by decoding the lock itself. This works even when there is no original key to copy.

  5. 5

    Program the key to the vehicle

    Modern keys must be electronically paired with the car's immobilizer system. We program the new key on site and, where the vehicle allows, can remove a lost key from the system so it no longer works.

  6. 6

    Test everything

    We test the key in the door, ignition or start button, and the remote functions such as lock, unlock, and trunk. You should leave with a key that works every time, not one that nearly works.

Need car key replacement in Monrovia?

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

Call (323) 997-8867

What affects the price

  • The type of key your vehicle uses: a basic metal key, a transponder key, a remote-head key, and a smart proximity key involve different parts and different programming work.
  • Make, model, and year, since some manufacturers use more complicated security systems that take more time and specialized equipment to program.
  • Whether you have a working key to copy or all keys are lost, because starting from nothing adds steps to the job.
  • How many keys you need; having a spare made during the same visit is often more efficient than coming back later.
  • The time and place of the call, including late-night or holiday service and how far the technician must travel to reach you.
  • Whether the vehicle also has a damaged ignition or door lock that needs attention alongside the key.

Why Monrovia chooses us

  • Fully mobile service: the work happens at your car, so you never pay for a tow just to get a key made.
  • In business since 1987, with decades of hands-on experience across many vehicle makes and key systems.
  • Available 24/7, including nights, weekends, and holidays, with no storefront hours to work around.
  • Cut and programmed on site, including all-keys-lost situations where there is no original to copy.
  • Ownership verification on every job, which keeps the process honest and protects your vehicle.
  • We explain what the job involves before work starts, and we do not make timing or pricing promises we cannot keep.

Car Key Replacement across Monrovia

Monrovia is a foothill city where the car is part of daily life. Residents commute along the I-210 (Foothill Freeway), run errands on Huntington Drive and Foothill Boulevard, and drive up Mountain Avenue toward the canyon. That mix of freeway, boulevard, and hillside driving means keys get lost in all kinds of places, from a restaurant booth in Old Town Monrovia to a hiking spot above North Monrovia, where cell service and daylight may both be limited.

We work throughout the city, including ZIP codes 91016 and 91017. In Old Town, around Myrtle Avenue, Library Park, and the Aztec Hotel, street parking and evening crowds are common, and we can come to your car right at the curb. In Mayflower Village and the residential streets nearby, we often meet customers in driveways, where a spare key can be made at the same visit.

If you live in the hills of North Monrovia above Foothill Boulevard, a long driveway or a gated lot does not change anything; we come up to the car. Commuters who park near the Metro A Line station and find a key missing or broken after a long day can also call us rather than arrange a tow. Whatever the location, call (323) 997-8867 and we will talk through next steps.

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 Monrovia locksmith services

See all of our Monrovia services, or our citywide car key replacement page.

Car Key Replacement in Monrovia — FAQs

Can you make a car key in Monrovia if I have no original key?
Yes. In most cases we can cut and program a new key even when every original is lost. Call (323) 997-8867 with your vehicle's make, model, and year and we will tell you what is involved.
Do I need to tow my car to get a replacement key?
Usually not. We are fully mobile, so the key is cut and programmed at your vehicle, whether it is parked in Old Town, at home, or on a hillside street.
What proof of ownership will you ask for?
We will ask for identification and proof the vehicle is yours, such as registration or title. We do this on every job for your protection.
Are you available at night or on weekends?
Yes, we are available 24/7 including nights, weekends, and holidays. You can reach us any time at (323) 997-8867.
Can you program a smart key or push-button start fob?
In many cases yes. Smart keys vary by manufacturer, so tell us the vehicle details when you call and we will let you know what to expect.
Will the old lost key still work after you make a new one?
On many vehicles we can erase lost keys from the car's system during programming so only the keys you have will start it. Ask us when you call, since this depends on the vehicle.
How is the price of a replacement key determined?
It depends on the key type, vehicle make and year, whether any key remains, how many keys you want, and the time and location of the call. We can walk you through those factors by phone.
Can you also make a spare key while you are there?
Yes, and it is often a good idea. Having a spare made during the same visit is usually simpler than starting over after the next lost key. Call (323) 997-8867 to arrange it.
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