What key fob replacement actually covers
A key fob is the small electronic remote that locks and unlocks your car, and on many vehicles it also starts the engine. Replacing one is more than buying a plastic case with buttons. The new fob has to be cut or emergency-keyed where needed, paired with your car's computer, and tested until every button and the start function behave the way they did when the car was new.
People search for this under a lot of names: remote car key replacement, smart car key replacement, proximity key replacement, push to start key replacement, or just 'I need a spare key fob.' They all describe the same family of work. What changes from car to car is the technology inside the fob and how the vehicle accepts a new one.
This page is about fobs and remotes specifically. If your problem is a worn ignition, a snapped metal key, or a car you can't get into, those are different jobs, and we've pointed you to the right pages below where it matters.
- Replacing a lost, stolen, or broken fob
- Adding a spare key fob while you still have a working one
- Programming a fob you bought elsewhere, when the vehicle allows it
- Swapping a cracked shell or a dead battery that has caused the fob to fail
- Proximity and push-button start key replacement
What happens when a fob dies, disappears, or stops talking to the car?
Fobs fail in ordinary ways. The battery runs down and the buttons go quiet. The case cracks after one too many drops on concrete. The fob gets washed in a jacket pocket, or it falls out of a bag on a bus and never comes back. Sometimes it works for the door locks but the car won't start, which usually points to the transponder side of the key rather than the buttons.
Willowbrook's mild, flat climate is easy on electronics compared with places where heat or salt air eat at them. In this area, fobs mostly wear out the way fobs do anywhere: from daily handling, keyring weight, dropped keys, and old batteries nobody changed. If your fob is flaky rather than dead, a battery or a worn shell may be the whole problem, and we'll tell you so before replacing anything.
The most important question is whether you still have one working key. If you do, adding a fob is usually the simpler job. If every key is gone, the car has to be handled as an all-keys-lost situation, which takes more steps and generally costs more. Our page on lost car key replacement covers that scenario in detail.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How we replace and program a key fob, step by step
Every vehicle is a little different, but the work follows the same honest sequence. We don't guess at what your car needs; we confirm it first.
- You call (213) 577-1366. We ask for the make, model, year, and what the current key looks like: a flip key, a plain remote, or a card or fob with a start button.
- We confirm what your vehicle uses, including checking the VIN where it matters. Where information about a particular model is uncertain or conflicting, we say so and confirm in person rather than promise something we haven't verified.
- A mobile technician comes to your car, or you can bring the vehicle to our Westwood storefront at 10740 Wilshire Blvd if that's easier.
- We check the existing key situation: whether any working key remains, whether the ignition and door lock behave normally, and whether the battery in the old fob is simply spent.
- We prepare the new fob, which may include cutting an emergency key blade, and pair it to the vehicle's system.
- We test every function: lock, unlock, trunk or hatch, panic, remote start if equipped, and starting the engine. Then we test the old keys too.
- If you want, we program a spare at the same visit, since adding one while we're already connected is usually the more economical route compared with a second trip later.
Remote key, smart key, proximity key: what's the difference?
The words get mixed up, so here is the plain version. A remote key, sometimes called a flip key or remote head key, has a metal blade you put in the ignition and buttons for the locks. A smart key or proximity key stays in your pocket; the car senses it nearby, lets you open the door, and starts with a button. Push button start key replacement and proximity key replacement describe that second kind.
Smart keys usually need more careful handling. They tend to carry a hidden emergency blade, they pair to the car through its security system, and they can be more sensitive to which replacement part is used. A fob that looks identical on the outside may not talk to your car at all if the internal electronics are wrong.
The chip inside the key is its own piece of the puzzle. If your trouble is the car cranking but not starting, read our page on transponder key programming, since that chip and the fob's remote circuitry are separate parts, even when they live in one housing.
We don't quote chip types or frequency details from memory, because they vary by make, model, and year. We confirm by VIN or in person before ordering or programming anything.
- Remote head key: metal blade plus lock and unlock buttons
- Smart or proximity key: stays in the pocket, opens and starts the car without being inserted
- Push button start fob: the same family as a smart key, named for the start button on the dash
- Basic remote only: operates the locks but doesn't start the engine
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What affects the cost of key fob replacement?
We don't publish a flat number here because a flat number would be misleading. Fob work varies widely, and anyone quoting a figure without knowing your vehicle is guessing. We give you a clear quote once we know your car and your situation, before work starts.
These are the factors that move the cost up or down:
- Vehicle make, model, and year: some systems are simple to pair and others are tightly controlled
- Fob type: a basic remote usually costs less than a proximity or smart key
- Whether you have a working key: adding a spare is usually lighter than an all-keys-lost job
- Whether the vehicle's security system allows locksmith programming or requires dealer-side access
- New original-equipment fob versus a quality aftermarket one, where the car accepts it
- How many fobs you want programmed in one visit
- Whether an emergency key blade has to be cut
- Where the car is and what hour you call; a visit at 3 a.m. is a different logistical job than a weekday afternoon
- Whether the problem is really the fob, or a battery, a worn shell, or a failing ignition
Should you go to the dealer or call a locksmith?
Sometimes the dealer is the right answer, and we will say so. A small number of vehicles have security systems where a locksmith can't complete the programming without dealer-only access. When that's the case with your car, we'll tell you plainly rather than take your money and fail. We confirm this by VIN and in person, not by hunch.
For many other vehicles, a locksmith is the more practical route. We come to the car, which means you don't need a tow or a ride to a service department when the key is the only thing stopping the car from running. For a spare key fob, mobile programming is usually the more convenient option because you skip the appointment and the waiting room.
If your problem turns out to be the ignition itself, not the fob, we'll say so and point you toward ignition repair rather than sell you a fob that won't fix it.
Why call Wilshire Lock & Key for a key fob
We've been in business since 1987. That's a long stretch of cars, keys, and changing technology, and it's why we know to ask the unglamorous questions first: do you have a working key, what does the fob look like, and what does the VIN say?
We run a real storefront at 10740 Wilshire Blvd in Westwood plus mobile service vans. When you call, you reach us, not a national call center that sells the job to whoever is available. There are no dispatch middlemen between you and the person who will work on your car. David, the owner and lead technician, oversees the work.
Our phone is answered 24 hours a day, 7 days a week, year-round at (213) 577-1366. A dead fob rarely fails at a convenient time, so neither does our line.
One more thing worth knowing: California requires locksmith companies to hold a BSIS LCO license. Ask any locksmith you call for it, including us, and be wary of anyone who dodges the question.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Key fob replacement around Willowbrook
Willowbrook is an unincorporated community of Los Angeles County, covering the ZIP codes 90059, 90061, and 90222. We work across all of them. The area sits roughly 18 miles from our Westwood base, and our mobile vans serve it directly.
The Rosa Parks Station area is a good example of why mobile fob service matters here. Commuters park and ride the Metro A and C lines from the station, and a fob that dies or goes missing during the workday means a car stranded in a lot. When that happens, a technician can come to the vehicle at the park-and-ride, confirm what the car needs, and program a replacement on the spot. If the keys are locked inside rather than lost, see our car lockout page.
Drivers around the Martin Luther King Jr. medical campus on 120th Street have a different pattern: long shifts, cars parked for hours, and little time to deal with a dead remote. Staff and visitors near Martin Luther King Jr. Community Hospital and Charles R. Drew University of Medicine and Science can have us meet the vehicle where it is rather than losing a day to a dealership trip.
Along the Wilmington Avenue, Imperial Highway, and El Segundo Boulevard corridors, plenty of people work off the street or run small shops, and the vehicle is part of the livelihood. Residents near Magic Johnson Park, Mona Park, and the streets close to Watts and East Rancho Dominguez are just as covered. Older houses with small driveways and street parking mean cars often sit overnight outside, and a fob lost at home is often discovered in the morning, right when you need to leave.
If you want a broader look at what we do here, our Willowbrook locksmith page lists the full range.
Before you call: what helps us help you faster
A little information up front makes the quote clearer and the visit shorter. None of it is required, and we'll walk you through whatever you don't know.
Our automotive locksmith service and our car key replacement page give the wider picture if your situation isn't purely a fob. If you'd like us to come to you, see how our mobile locksmith service works.
- Make, model, and year of the vehicle
- The VIN, visible through the windshield on the driver's side dash, or on your registration
- Whether you still have any working key
- Whether the old fob is lost, broken, or just not responding
- Whether you want a spare key fob made at the same time
- Where the car is parked, and whether you can get to it
Frequently asked questions
Can you replace a key fob if I've lost every key?
Often yes, though it's a bigger job than adding a spare. With all keys lost, the car's system has to be handled differently, and it usually takes more time and costs more. Whether we can complete it depends on the vehicle, and we confirm by VIN or in person. If your car is dealer-only for this, we'll tell you honestly.
Do you come to me in Willowbrook, or do I have to bring the car?
We come to you. Our mobile vans serve Willowbrook, including ZIP codes 90059, 90061, and 90222. You can also bring the vehicle to our storefront at 10740 Wilshire Blvd in Westwood if that suits you better.
Is a dead key fob always a reason to replace it?
No. A weak battery is a common cause, and a cracked shell can sometimes be swapped without replacing the electronics. We'll check the simple fixes first, because replacing a fob that only needed a battery wastes your money.
Can you program a key fob I bought online?
Sometimes. It depends on whether the fob is compatible with your vehicle and whether the car accepts it. Fobs that look identical can have different electronics inside. Please call us with your make, model, year, and the fob's details before you spend more, and we'll tell you what we can do.
What's the difference between a smart key and a push button start fob?
They're essentially the same family. A smart key, or proximity key, lets the car sense the fob nearby so you can open the door and start without inserting a key. Push button start refers to the start button that goes with it. Both usually need careful pairing to the vehicle.
How much does key fob replacement cost?
It depends on the vehicle, the fob type, whether you have a working key, whether the car allows locksmith programming, and how many fobs you want. We don't quote a number without knowing your car, but we'll give you a clear quote before any work begins.
Is it better to get a spare key fob now instead of waiting?
Usually, yes. Adding a spare while you still have a working key is generally simpler and the more economical route than replacing everything after the last one is lost. It also means you're not stuck if the main fob fails.
Will you tell me if the dealer is the only option for my car?
Yes. Some vehicles have security systems that require dealer-side access, and we'd rather say so than take a job we can't finish. We confirm by VIN or in person and give you a straight answer.
Do you answer the phone at night and on weekends?
Yes. Our line at (213) 577-1366 is answered 24 hours a day, 7 days a week, year-round, including holidays.
More locksmith help in Willowbrook
Key Fob Replacement near Willowbrook
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.