What do you do when you've lost all your car keys?
Losing one key is an annoyance. Losing all of them is a different problem, because there is nothing left to copy. A basic duplicate only works when someone can trace or clone a key that already exists. When every key is gone, the key has to be made new, and on most modern vehicles that means cutting the blade to the right code and then getting the car to accept the new key electronically.
That is what lost car key replacement means at our shop: a replacement car key without the original. You do not need a spare in your pocket, and you do not need the old key to be recovered first. You need the vehicle, proof that it is yours, and a locksmith who has the equipment to build the key on the spot.
If you still have one working key, stop and read our page on key duplication instead. Making a copy from a key you hold is usually the more economical route, and it is worth doing before the last key disappears too.
How do we make a replacement car key without the original?
The process is the same whether we meet you at the curb or you bring the car to our Westwood storefront at 10740 Wilshire Blvd. The order of the steps matters, because the ownership check comes before any key is cut.
- You call (213) 577-1366. A person answers, day or night, and asks for the make, model, and year, where the car is, and whether any key at all is left.
- We confirm what the vehicle needs by VIN. We do not guess from the model name, because the same model can use different key systems depending on the year and trim.
- We verify ownership. You show ID and proof the car is yours, and we compare the details to the vehicle in front of us.
- We get the key code. Depending on the vehicle, that comes from the VIN through the proper channels, from the lock itself, or from the ignition or door lock being read directly.
- We cut the key blade to that code, then program the new key so the car's immobilizer recognizes it, where the vehicle has one.
- We test everything before we leave: the key turning the ignition or starting the car, the door locks, and any remote buttons that come with the key.
- If old keys are still unaccounted for, we can talk through removing them from the car's memory so a lost key can no longer start it, where the vehicle allows that.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What do we need from you to make a new key?
Any honest locksmith will ask you to prove the car is yours. This is not a formality. A key made without that check is a key that could be made for someone else's car, and we will not do that, no matter how convincing the story sounds at two in the morning.
Have these ready if you can:
- A government-issued photo ID.
- Proof of ownership, such as the registration or title, with your name matching the ID.
- The vehicle itself, or a way for us to read the VIN directly from it.
- Any information about keys that may still exist, such as a spare at a relative's home or a valet key in the glove box.
- If the car is leased or financed, any paperwork you have showing you are the registered driver or lessee.
What kind of key does your car use, and could it be dealer-only?
Car keys are not one thing. Some vehicles use a plain metal key with no electronics. Many use a key with a transponder chip that must be programmed to the car. Others use a remote-head key, or a push-button-start smart key with no visible blade at all. Which one your car has depends on the make, model, and year, and we do not make assumptions about it. We confirm by VIN, and in some cases by looking at the car in person.
We also tell you plainly when a vehicle is difficult. Some makes and years lock down their programming so tightly that only the dealer can complete the job, or require parts and access that a mobile locksmith cannot get for that specific car. When that is the case, we say so before you pay for anything, and we do not start work we cannot finish.
If your vehicle takes a chip key, the programming step is covered in detail on our transponder key programming page. If your key is a remote or smart fob rather than a plain key, see key fob replacement. For the broader picture of what we do with vehicle keys, our car key replacement page is the overview.
What affects the cost of lost car key replacement?
We do not quote numbers on a web page, because the honest answer depends on your car. What we can do is tell you exactly what moves the cost up or down, so nothing surprises you when we give you a quote.
The first factor is the type of key. A plain blade key is a much simpler job than a chip key, and a chip key is simpler than a smart key with encrypted communication. The second factor is the vehicle's make and year, since some systems need more equipment and more time to program than others. The third is how many keys you need. Having us make two while we are already there is usually a lighter-cost move per key than coming back later for a spare.
Other factors are the location and the hour. A job at our storefront differs from a mobile call to your address, and a call in the middle of the night differs from a daytime appointment. The last factor is condition: if the ignition or door lock is damaged or worn, the key may need extra work to function, and that is an add-on we will name before we do it.
Every quote we give you covers the whole job as we understand it. If something changes on site, we stop and explain it before we continue.
- Key type: plain, chip, remote-head, or smart key.
- Vehicle make, model, and year.
- Number of keys you want made.
- Mobile service versus bringing the car to the storefront.
- Time of day and distance traveled.
- Condition of the ignition and locks.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How does a locksmith compare to the dealer for an all-keys-lost situation?
Both can solve the problem, and for some vehicles the dealer is the only route. For many others, a locksmith is the more practical one, for a few reasons that have nothing to do with marketing.
A mobile locksmith comes to the car. A dealer usually needs the car brought to them, and a car with no key cannot be driven there, so it often means arranging a tow first. Locksmiths also tend to work outside normal business hours, which matters when the key vanished on a Saturday night. And we can cut and program on the spot, which often avoids waiting on a part order.
The dealer can be the right call when the vehicle is on the dealer-only list for key programming, or when the car is under a warranty or service agreement that you want to keep clean. We will tell you honestly if yours is one of those. We would rather lose a job than leave you with a half-finished key and a car that still will not start.
What does lost car key service look like in West Carson?
West Carson is an unincorporated county area, and most addresses here use the Torrance mailing ZIP 90502, while the southern edge shares 90710 with Harbor City. We are about 22 miles from the West Carson area by road distance from our Westwood base, and our mobile vans cover it as part of our wider service area across Los Angeles County.
The housing here shapes how lost-key calls tend to play out. Along the Vermont Avenue corridor and the Normandie Avenue corridor you find garden apartments and small rental complexes, where the car often sits in an assigned or shared lot. If you realize the keys are gone while you are standing in one of those lots, we can come to you and work from the vehicle where it is parked. Tenants in the same buildings sometimes get locked out of the apartment as well; if that is part of the problem, our car lockout page covers getting into a vehicle without a key, and our apartment lockout page covers the door.
Postwar tract homes and newer townhome infill near the Harbor-UCLA Medical Center area mean a lot of cars are parked in driveways or in small garages. A car in a driveway is easy to reach. A car parked on a street near the Sepulveda Boulevard corridor or the Harbor Freeway interchange is also workable, as long as we can safely park nearby and the vehicle can be reached for programming.
If you are near the Harbor Gateway or Harbor City side of the ZIP boundary and are not sure whether you count as West Carson, it does not matter. Tell us where the car is, and we will take it from there.
One more local note. West Carson sits on the flat harbor-adjacent plain inside the marine layer zone, without direct coastal salt exposure. For car keys, that means the usual causes of lost or damaged keys here are ordinary wear and everyday loss rather than corrosion. If your problem is a worn ignition rather than a lost key, that is a separate repair, which our ignition repair page covers.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Why call Wilshire Lock & Key for a lost car key?
We have been in business since 1987, and we are one company. When you call (213) 577-1366, you are not reaching a dispatch service that sells your job to whichever subcontractor answers first. The person on the phone works for the same shop whose van arrives at your car.
We operate a real storefront at 10740 Wilshire Blvd in Westwood, plus mobile vans. That combination matters for lost-key jobs. If your car can be towed or driven, the storefront is a controlled place to work. If it cannot, the van comes to you. Our mobile locksmith service covers how that works in general.
David, the owner and lead technician, oversees the work. You will not be handed to someone we cannot name. Our phone is answered 24 hours a day, 7 days a week, year-round, because keys do not get lost on a schedule.
One more thing worth knowing: California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith you call for it. A legitimate company will give it to you without hesitation. Ask us the same questions you would ask anyone else; we would rather you were careful.
What should you do before you call about a lost car key?
A few quick checks can save you a call, and a few things are worth avoiding. Do these in this order if you can.
First, retrace your steps and check obvious places: jacket pockets, the gym bag, the last place you set the keys down. Check whether the car is actually locked, since some cars with a smart key will not unlock if the key is far enough away. Ask anyone else who drives the car whether they have a key. A single spare changes the whole job and is almost always the more economical route.
Second, do not try to force the ignition or door lock. Damaging a lock turns a key problem into a lock repair, and the lock repair is added to the cost. Also do not buy a random key blank or remote online and expect it to work; a key that is cut but not programmed will not start a chip-equipped car.
Third, if you think the keys were stolen rather than lost, tell us. That changes the plan. We can talk about having the missing keys removed from the car's memory so they no longer work, where the vehicle allows it, and you may want to report the theft separately.
Finally, write down your VIN before you call, or take a photo of it. It is usually visible through the windshield at the base of the dashboard on the driver's side, and it is also on your registration and insurance card.
Frequently asked questions
Can you make a car key if I have lost every key and have no original?
Yes. That is exactly what lost car key replacement is. We build the key from the vehicle's VIN and key code, cut it, and program it to the car where needed. You will need to prove ownership, and we confirm what your specific vehicle requires by VIN before we start.
Do you come to West Carson, or do I have to bring the car in?
We come to you. Our mobile vans serve West Carson, including the Vermont Avenue, Normandie Avenue, and Sepulveda Boulevard corridors and the area around Harbor-UCLA Medical Center. If you prefer, or if the car can be moved, you can also bring it to our storefront at 10740 Wilshire Blvd in Westwood.
What proof do I need to show that the car is mine?
A government-issued photo ID and something showing ownership, such as the registration or title, with a name that matches. We compare these to the vehicle itself. If the car is leased or financed, bring whatever paperwork shows you are the registered driver or lessee.
Will the new key work if my car has a chip or push-button start?
It can, as long as the vehicle is one we can program. Chip keys and smart keys need electronic programming in addition to cutting, and what your car requires depends on its make, model, and year. We confirm by VIN before we begin. If your vehicle is dealer-only for programming, we tell you before any work starts.
Is a dealer ever the only option for a lost car key?
Sometimes, yes. Some vehicles restrict key programming to the dealer, or need parts or access a mobile locksmith cannot get for that specific car. We will tell you honestly if yours is one of them. For many other vehicles, a locksmith is the more practical route because we come to the car and can often finish in one visit.
What if my lost key could be found by someone else?
Tell us. Where the vehicle allows it, the old key can be removed from the car's memory so it no longer starts the engine. That depends on the make and model, and we confirm what is possible when we program the new key. If the key may have been stolen, it is also reasonable to report that separately.
How much will a replacement car key cost?
We do not give prices online because it really depends on your car. The main factors are the key type, the vehicle's make and year, how many keys you want made, whether we come to you or you come to us, the time of day, and the condition of the ignition. Call (213) 577-1366 and we will explain what applies to your vehicle.
Should I make a spare while you are already making a new key?
In most cases, yes. Having us make a second key during the same visit is usually the more economical route compared with another call later. A spare also means that the next lost key is a simple duplicate rather than another all-keys-lost situation.
More locksmith help in West Carson
Lost Car Key Replacement near West Carson
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.