What car key replacement actually involves
A car key is not one thing anymore. Some are plain cut metal. Some carry a chip that the car has to recognize before it will start. Some are remote fobs, and some are smart keys that talk to the car without ever touching the ignition. Replacing one means two jobs: getting the physical cut right where there is a blade, and getting the electronics to match the vehicle where there is a chip or remote.
That is why a Westmont driver who calls us for a spare gets a few questions before we say anything else. We need the make, model and year, whether you still have any working key, and what the current key looks like. From there we can tell you whether the job is something we do at the curb or whether your particular car needs something different.
This page covers the full range of work under the car key replacement heading: a duplicate car key while you still have one in hand, a spare car key so you are never stuck with a single copy, and a replacement when the original is gone, broken or worn out. If your situation is specifically that every key is lost, our page on lost car key replacement goes into that case in more detail.
Which kind of key do you have, and why it matters
The type of key decides almost everything about the job: the time it takes, the equipment we bring, and the cost. In broad terms, these are the categories we sort a request into. Where your own vehicle falls depends on its make, model and year, and we confirm that by VIN and in person rather than guessing over the phone.
- Mechanical keys: a cut blade with no electronics. Cutting is the whole job.
- Transponder keys: a blade with a chip inside the head. The blade has to be cut and the chip has to be programmed so the car accepts it. Our page on transponder key programming explains that side in more depth.
- Remote head keys and fobs: the key and the lock/unlock buttons share a housing, or the remote is a separate piece. See key fob replacement for fob-specific work.
- Smart or proximity keys: the car senses the key nearby and starts with a button. These usually need diagnostic equipment to pair a new one.
How we handle a car key replacement, step by step
We keep the process the same whether you are in a driveway off Vermont Avenue or parked at work, because the order of steps is what keeps the job clean.
- You call (213) 577-1366. Someone answers, any hour, any day. You give us the vehicle's make, model and year and describe your key situation.
- We tell you honestly whether your vehicle is one we can handle on site, whether it may be a dealer-only case, and what information we need to confirm. We verify the details by VIN when we arrive.
- A mobile van comes to your location. Our storefront is at 10740 Wilshire Blvd in Westwood, and the vans cover the area from there.
- We confirm that you are the owner or have authority over the vehicle. Expect to be asked for identification and something that ties you to the car, such as registration. This protects you, and we do not skip it.
- We look at what you have. If there is a working key, we can often read and copy from it. If there is none, we work from the vehicle's lock and its key information.
- We cut the key blade where there is one, then program the chip or remote to the vehicle where that applies.
- We test everything before we leave: the door lock, the trunk if it has its own lock, the ignition, the remote functions, and starting the engine. You should see it all work while we are standing there.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Same day car key replacement and mobile service: what to expect
People searching for same day car key replacement usually need the car running today, and we understand that. We answer the phone around the clock, and because the work is done by mobile van, there is no tow to a shop for most jobs. The cutting and programming equipment travels with us.
We will not promise a fixed arrival window or a fixed finish time, because those depend on where we are when you call, traffic, and what your vehicle demands. What we can promise is a straight answer about the situation. Sometimes the right key blank is on the van and the job is quick. Sometimes a blank or part has to be sourced, and we say so up front instead of leaving you waiting.
For a broader look at how our vans work, see our page on mobile locksmith service in Westmont. If you are not in the middle of an emergency, a spare can be done on a planned visit, which is calmer for everyone.
Duplicate, spare or full replacement: which one are you after?
These three requests sound alike, but they are different jobs.
A duplicate car key is a copy made from a key that still works. This is usually the simpler path because we have something to work from. A spare car key is the same idea with a purpose: you want a second key before the first one goes missing. A replacement is what you need when the original is lost, snapped, or no longer functions.
Our advice, after many years at this: make the spare while you still have a working key. Replacing when you have zero keys is nearly always more involved, because there is nothing to read from and the car may need to be set up to accept a new key from scratch. If you are weighing whether to wait, that difference is the main reason not to.
One related note: ordinary key duplication for house and apartment keys is its own service. If you have a ring with both, our key duplication page covers the non-vehicle side.
What affects the cost of replacing a car key?
We do not quote numbers on a web page, because a number given before we know your vehicle would be a guess. Here is what actually moves the cost, so you can judge any quote you receive from anyone.
- Key type. A mechanical key is a different job from a chip key, and a smart key is different again.
- Vehicle make, model and year. Some vehicles are straightforward and some require more specialized procedures.
- Whether you have a working key. Copying from one is usually the more economical route compared with starting from nothing.
- How many keys you need. Doing a spare alongside a replacement in the same visit is often more efficient than two separate trips.
- Whether a blank or part has to be sourced. Common blanks are easier to have on hand than unusual ones.
- Time and place. After-hours calls and distance from our base can factor in, and we explain how before we start work.
- Whether anything else is wrong. If the key will not turn because the ignition is worn or damaged, that is a separate repair, covered under ignition repair.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366When a car is dealer-only, and when it is not
Honesty matters more than closing a job. Some vehicles, and some key types, can only be completed through the dealership, usually because of how the manufacturer controls key codes or security access. When a car falls in that category, we say so on the phone or as soon as the VIN confirms it, and we do not take payment for work we cannot finish.
The reverse is also true. Plenty of drivers assume the dealer is their only option when it is not. A mobile visit can spare you the trouble of arranging a tow or finding a way to get the car there. We cannot tell you which side your car is on without the make, model, year and VIN, so we do not pretend to. That is why the first call is mostly questions.
Why call Wilshire Lock & Key for your car key
Wilshire Lock & Key has been in business since 1987, and David, the owner and lead technician, oversees the work. We are one company: the person who answers the phone is part of the same operation that sends the van, not a call center passing your job to whoever bids. That is what we mean by no dispatch middlemen.
We have a real storefront at 10740 Wilshire Blvd in Westwood and mobile vans on the road, and we serve 140 cities across Los Angeles and Ventura counties. Westmont sits about 14 miles from our base, and it is a regular part of that service area.
One more thing worth knowing as a consumer: California requires locksmith companies to hold a BSIS LCO license. Ask any locksmith you call for it before work begins. It is a fair question and a good habit.
If you need a hand with something adjacent to your key, such as a car you are locked out of or a key stuck in the lock, those are different jobs that we handle separately. See car lockout and broken key extraction.
Car keys in Westmont: what the area looks like for this work
Westmont is an unincorporated part of Los Angeles County, covered by ZIP codes 90044 and 90047. It is densely built, with 1920s to 1940s bungalows and Spanish-style cottages next to small postwar homes and two-story apartment buildings, especially along Vermont, Normandie and Western avenues. Renters make up a large share of households.
That matters for car keys more than you might expect. In a rental household, the car key often lives on the same ring as the apartment key, the mailbox key and a security-door key. When that ring goes missing, there are several problems at once. We handle the vehicle side as car key replacement, and our Westmont locksmith pages cover the door and mailbox side. Apartment lockouts and mailbox lock changes along Vermont and Western avenues are common scenarios for us, and a lost ring usually means both the car and the building need attention.
We work around the Vermont Avenue corridor, the Western Avenue corridor and the Normandie Avenue corridor, as well as along Century Boulevard and Manchester Avenue, and the Jesse Owens Park area. If you are near the Vermont and Manchester intersection, near Vermont Knolls, or on the Morningside Park side toward Inglewood, tell us where the car is parked when you call and we will plan the visit around it.
The climate is easy on keys. Westmont is a flat inland coastal plain with a regular morning marine layer and mild temperatures, and corrosion is minor. A worn key here is usually worn from years of daily use, not from salt or weather, and a fob usually fails from battery or button wear. Worn keys are worth replacing before they snap in the lock or ignition, which is a much bigger headache than a planned spare.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How to prepare before we arrive
A few minutes of preparation makes the visit faster and keeps the cost predictable.
- Have your photo ID and your vehicle registration or other proof of ownership ready.
- Know the make, model and year, and be ready to point us to the VIN on the dash or door jamb.
- Gather any keys you have, even broken ones, and any remote or fob that still works.
- Tell us if the car has had key trouble before, such as a key that sticks or a worn ignition.
- Park where the vehicle is accessible, and let us know about any gate or security-door access.
Frequently asked questions
Can you make a car key on site in Westmont, or do I have to go to a dealer?
For many vehicles we can cut and program a key at your location with our mobile vans. Some vehicles and key types are dealer-only, and we tell you plainly when that is the case. We confirm by VIN and in person, so call (213) 577-1366 with your make, model and year and we will tell you what we can and cannot do.
Is it cheaper to make a spare car key than to replace a lost one?
Usually yes, it is the more economical route. With a working key we have something to copy from, and the car is already set up around it. When every key is lost, the job generally involves more steps. We do not quote numbers on this page because the final cost depends on your vehicle and key type.
What is the difference between car key cutting and key programming?
Cutting shapes the metal blade so it fits the locks and ignition. Programming teaches the car to accept the chip or remote in the key. Some keys need only cutting, some need only programming, and many need both. We tell you which applies to your key before we start.
Do you offer same day car key replacement?
We answer the phone 24 hours a day, and since we work from mobile vans, many jobs can be handled the same day. We do not promise a fixed time, because it depends on your vehicle, whether the right blank is on hand, and where we are when you call. We will be direct about it on the phone.
What do I need to show you to get a new car key?
Expect to be asked for photo ID and proof you own or have authority over the vehicle, such as registration. We also confirm the VIN. That is for your protection, and it keeps a stranger from getting a key to your car.
My key is stuck or snapped in the ignition. Is that the same service?
Not exactly. A broken piece in the lock is handled by broken key extraction, and a worn or damaged ignition falls under ignition repair. Once the problem is solved, we can make the replacement key in the same visit when that makes sense.
Should I make a spare before my only key breaks?
Yes. A spare car key made from a working key is simpler than starting with no key at all. A key that is visibly worn, bent, or hard to turn is a good sign to make that spare soon.
How do I know a locksmith is legitimate?
California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith you call for it before work starts. Also be cautious of anyone who will not give you a company name, gives a vague quote, or sends someone without explaining the job. You can also visit our storefront at 10740 Wilshire Blvd, Los Angeles, CA 90024.
More locksmith help in Westmont
Car Key Replacement near Westmont
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
