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(323) 997-8867
Crenshaw Lock

Key Fob Replacement in Diamond Bar · 24/7 mobile

Key Fob Replacement in Diamond Bar, CA

Crenshaw Lock Company provides key fob replacement in Diamond Bar, California, around the clock. We are fully mobile, so we come to your car, replace the lost or damaged remote or smart key, and program it on site. Call (323) 997-8867 any hour, any day.

  • Mobile to your Diamond Bar 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
Open now(323) 997-8867

A dead, cracked, or missing key fob is more than an annoyance in Diamond Bar. Most of us here depend on our cars every day, whether it is the SR-60 commute, the SR-57 run toward the Orange County line, or a quick trip down Diamond Bar Blvd for groceries. When the fob stops working, or disappears entirely, the car can feel stranded even if the engine is perfectly fine.

Crenshaw Lock Company has served Greater Los Angeles and Ventura County since 1987, led by owner and lead technician David Shar. We are a fully mobile locksmith with no storefront to visit, which suits this situation well: you should not have to tow a car anywhere just to get a new remote. We come to the driveway, the parking lot, or the roadside, and we work on the vehicle where it sits.

Key fob replacement covers several different situations. Some people have lost every key and need a new one created from scratch. Others still have one working fob and want a spare before the last one disappears. Others have a remote with worn buttons, a dead transmitter, or a smart proximity key that no longer talks to the car. Each one is handled a little differently, and we will tell you plainly what your vehicle needs before we start.

How it works in Diamond Bar

  1. 1

    Call and describe the situation

    Reach us at (323) 997-8867 and tell us the make, model, and year, and whether you have any working key left. That helps us understand whether this is a spare, a replacement, or an all-keys-lost situation.

  2. 2

    We come to your location

    Because we are fully mobile and available 24/7, we travel to you, whether you are at home, at work, or parked at a shopping center. No tow or trip to a shop is needed.

  3. 3

    Verify ownership

    Before we create or program any key, we ask for proof that the vehicle is yours, such as registration and identification. This protects you and every other vehicle owner.

  4. 4

    Identify the correct fob

    We confirm the right remote or smart key type for your vehicle, including the transponder or proximity technology it uses, so the replacement is compatible and not just similar looking.

  5. 5

    Cut, program, and pair

    If your fob includes an emergency or blade key, we cut it. We then program the new fob to the vehicle so the remote functions and the car recognizes the key to start.

  6. 6

    Test everything before we leave

    We test lock and unlock, any trunk or panic functions, and starting the engine. If you want a spare, we can program that during the same visit.

Need key fob replacement in Diamond Bar?

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.
  • Type of key: a basic remote, a flip key, or a smart proximity key all differ in hardware and programming needs.
  • Whether you have a working key, because an all-keys-lost situation usually takes more work than adding a spare.
  • Whether the fob is an original manufacturer part or a quality aftermarket option, when both are available.
  • Whether a physical emergency blade needs to be cut as part of the job.
  • Time of day and your location, since we are available around the clock and travel to you.

Why Diamond Bar chooses us

  • Fully mobile service, so the work happens at your car and you do not need to arrange a tow.
  • Operating since 1987, with owner David Shar leading the work.
  • Available 24/7, including nights, weekends, and holidays.
  • We explain the options and what your vehicle requires before work begins, with no pressure.
  • We verify ownership before programming, which keeps your vehicle secure.
  • The same company can also help with house lockouts, deadbolts, and commercial locks, so one number covers many needs.

Key Fob Replacement across Diamond Bar

Diamond Bar is a hillside suburb where cars are part of daily life, and fob problems tend to show up in familiar places. We hear from drivers in Pathfinder and the Sunset Crossing area whose remotes quit in the driveway, and from residents of the Summitridge area who find a fob missing after a day out. In the guard-gated Country Estates, many homes have long driveways and keypad gates, so having a locksmith come directly to the property is especially convenient.

We serve both Diamond Bar ZIP codes, 91765 and 91789. Our work often takes place in parking areas around Diamond Hills Plaza, near Diamond Bar Center, at the Diamond Bar Golf Course, or by the trails and picnic areas at Sycamore Canyon Park, where a fob can easily slip out of a pocket. Commuters near the SR-57/SR-60 interchange at Grand Avenue also call us when a smart key gives out before the drive to work.

Whether you are on Golden Springs Dr, along Grand Ave, or in a quiet cul-de-sac, call (323) 997-8867. Because we are mobile, there is no shop to find. We come to wherever your 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 Diamond Bar locksmith services

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

Key Fob Replacement in Diamond Bar — FAQs

Can you replace a key fob if I lost all my keys?
In many cases yes. We can often create and program a new key even without a working one, after verifying ownership. Call (323) 997-8867 with your vehicle details and we will explain what is involved.
Do I need to bring my car anywhere in Diamond Bar?
No. We are fully mobile and come to your car, whether it is at home, at work, or at a parking lot near Diamond Hills Plaza.
Do you offer key fob service at night?
Yes. We are available 24/7, including nights, weekends, and holidays. Call (323) 997-8867 any time.
What proof of ownership will you need?
We typically ask for your identification and vehicle registration or title that match the car. This keeps your vehicle protected.
Can you program a spare fob if mine still works?
Yes, and it is usually simpler than replacing after losing every key. Having a spare programmed now can save trouble later.
Is it the same as a dealer replacement?
The result is a working fob programmed to your vehicle, but we come to you instead of requiring a trip or tow. Availability of parts depends on the vehicle.
What affects the price of a new fob?
The vehicle, key type, whether you have a working key, and whether a blade must be cut all play a role. We do not quote numbers in advance on this page; call (323) 997-8867 to discuss your situation.
Do you serve gated areas like The Country Estates?
Yes. We come to gated properties in Diamond Bar. Let us know the gate access details when you call so we can arrive prepared.
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