What does it mean when you've lost all your car keys?
Losing every key to your car is a different problem from misplacing a spare. With a spare, a locksmith copies it. With nothing in hand, there is nothing to copy, so the new key has to be built from the car itself. That is lost car key replacement: making a working key when the original is gone for good.
Most keys made in recent decades are more than cut metal. The blade has to fit the ignition and doors, and many vehicles also need a transponder chip or remote that the car's computer recognizes before the engine will run. A replacement car key without the original is really two jobs: producing the right cut, then teaching the vehicle to accept the new key.
However the keys went missing, whether from a pocket in a parking lot, a shopping bag, a move, or a borrowed car, the first question is the same: where is the car, and can we reach it? For many vehicles we can do the whole job where it is parked, which saves a tow. For others the honest answer is more complicated, and we cover that below.
It also helps to be clear about what 'lost' means. If the keys are probably in the house or a coat pocket, a careful search costs nothing. If they are gone for good, or may have been stolen, replacement matters, and so does making sure the old keys no longer work in the car.
How do we make a replacement car key without the original?
Every vehicle differs, but a lost-all-keys call follows the same order. Chip keys are a specialty of their own, and our transponder key programming page explains that side. If you lost a remote or push-button fob, the key fob replacement page covers what differs, and car key replacement gives the wider overview.
How long the work takes varies with the vehicle and the key type, and we would rather give you an honest idea for your specific car on the phone than promise a number here.
- You call (213) 577-1366. We ask for the year, make, and model, where the car is, whether it is locked, and whether any key at all, even a broken one, still exists.
- We confirm ownership with your ID and the car's registration or title before any key is made.
- We identify the key and security system from the VIN and, where the data is unclear, from the car itself. We confirm in person rather than guess.
- We produce the cut blade, using VIN-based code information where it is available for that vehicle, or by reading the lock itself when it is not.
- We program the new key to the car's computer through the diagnostic port, and where the vehicle allows, we remove the lost keys so they no longer start it.
- We test the key in the ignition, the doors, and any remote functions before you take it.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What do you need to show before we make a key?
We make keys for the person who can show the car is theirs. That protects you too: a locksmith who will key any car for anyone standing next to it is not one to call. Have these ready when you call.
If the registration was in the glovebox of the locked car, say so. There are sometimes other ways to establish ownership, and we would rather work through it with you than turn you away without trying.
- Photo ID
- Registration or title that matches your ID
- The VIN, visible through the windshield at the driver's side corner of the dash, on the door jamb sticker, and on your registration
- Year, make, and model, plus trim if you know it
- If the car is leased, financed, or registered to someone else, tell us on the phone so we can say what paperwork works
What affects the cost of lost car key replacement in Simi Valley?
We do not post numbers, because honest pricing depends on your exact car. Here is what moves the total, so a phone quote makes sense when you hear it.
For vehicles we can handle, a mobile visit is often the more economical route compared with towing to a dealer and waiting on an order, since you skip the tow and the second trip. Often, not always. If the dealer is the lighter-cost option for your car, we will tell you.
- Make, model, and year. Security systems vary widely, and that drives the work involved.
- Key type: a plain metal key, a chip key, a remote-head key, or a smart key for push-button start. More electronics generally means more cost.
- How the blade gets cut. A code lookup is quicker than decoding the lock by hand.
- How many keys you want. Making a spare in the same visit is usually more economical than a second trip, since the setup is already done.
- Whether the lost keys need to be removed from the car's memory.
- The condition of the ignition and door locks. A worn or damaged ignition can complicate programming and may need its own repair.
- Location and time. Simi Valley is about 35 miles from our Westwood storefront, and an after-hours call differs from a daytime one.
- Whether your car is a dealer-only case, covered next.
Is there a car you cannot key without the dealer?
Yes, and we say so up front. Some vehicles, particularly certain makes and newer model years, lock key creation inside manufacturer-secured systems. On those, the dealer or an authorized channel may be the only way to a working key, and anyone promising otherwise without your VIN is guessing.
Key data also varies by trim level and production date, and sources sometimes conflict. Where the information is unclear, we confirm by VIN and in person before committing. If the answer is dealer-only, we would rather tell you on the phone than after a van has driven out. Even then we can often help around the edges, such as opening a locked car so it can be towed.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Where do we handle lost car keys around Simi Valley?
Simi Valley is spread out, and ZIP codes 93063 and 93065 take in everything from flat ranch-tract streets to hillside roads. Because we come to the car, the useful question is where it sits right now. Our storefront is in Westwood, about 35 miles away, so we ask for an exact address or cross street at the start of the call and plan the drive from there.
Across the valley floor, where 1960s-70s single-family ranch tracts dominate, the car is usually in a driveway or at the curb, which is the simplest setup for us. In Wood Ranch, master-planned streets and HOA communities are common, so mention any guest parking rules. On the winding hillside streets of Santa Susana Knolls and Big Sky, tell us whether the car is on the street or up a steep driveway. In Bridle Path, large lots and horse gates can put the car a good distance from the road, so give us gate and access details when you call.
Public lots are the other half. Car lockouts at Simi Valley Town Center and the Metrolink station are common in town, and they overlap with lost keys: if the keys vanished between the store and the car, or between the platform and the lot, you may have a locked car, no key, and no easy way home. Our car lockout service opens the door; the new key is the second step, and often both fit in one visit. Whether the car is at Rancho Simi Community Park or near Adventist Health Simi Valley, tell us the lot and the nearest entrance.
Heat matters here. Summers are hot and dry, and Santa Ana wind events are part of life in this valley, so waiting beside a locked car is more than an inconvenience. If a child or pet is inside, call 911 first, then call us.
Why call Wilshire Lock & Key for a lost car key?
We have been in business since 1987. David, the owner and lead technician, oversees the work. We are one company, not a dispatch service that passes your call to whoever is nearest: the same business answers the phone and sends the van. We run a storefront at 10740 Wilshire Blvd, Los Angeles, CA 90024, in Westwood, plus mobile locksmith vans serving 140 cities across Los Angeles and Ventura counties, Simi Valley included. The line at (213) 577-1366 is answered 24 hours a day, 7 days a week, year-round.
Because the vans and the storefront belong to one company, the technician who arrives is working from what you already told us on the phone. David's oversight means the process above is the process every time, including the part where we tell you when a job belongs at the dealer.
California requires locksmith companies to hold a BSIS LCO license, issued through the Bureau of Security and Investigative Services. Ask any locksmith who comes to your car for their license number, and check it with the state before work begins. It is a fair question, and a company worth hiring will not mind it. Our automotive locksmith page lists the rest of our vehicle work.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What should you do before the locksmith arrives?
A little preparation makes the visit faster and the quote more accurate. If you have a spare at home, say so. A working key changes the job from lost car key replacement to copying, which is simpler, and a family member can sometimes bring it to you.
- Retrace your steps once, calmly: pockets, bags, the last place you parked. A key found now saves everyone time.
- Find the VIN and gather your ID and registration.
- Note the exact location, plus any gate codes, HOA guest-parking rules, or steep access.
- Do not pry the door or force the ignition. Damage can turn a key job into an ignition repair job.
- If the keys were lost with a bag or wallet that has your address inside, mention it.
What happens after the new key works?
We test it, and where the vehicle allows, we remove the lost keys from the car's memory so a found or stolen key will not start it. Whether that is possible depends on the system, and we tell you which applies.
Then get a spare now. Once you have a working key, key duplication can be the lighter-cost way to add another, though a chip key copy still needs programming, so ask which applies to yours. Keep the spare somewhere other than your car or your own bag.
If your keys disappeared along with something showing your address, treat your home as part of the problem. Rekeying house locks is a separate job, and it is worth raising while you are already on the phone with us.
Frequently asked questions
Can you make a car key if I have lost every key?
For many vehicles, yes. We build the key from your VIN and proof of ownership, then program it to the car. Some makes and newer models are dealer-only, and where the data is unclear we confirm by VIN and in person before promising anything.
Do you need my original key to make a replacement?
No. That is the point of this service. If you have even a worn or broken key, mention it, because it can simplify the job. A working spare changes it to simple copying.
Will you come to my car in Simi Valley, or do I need to tow it?
Our mobile vans come to the car, and for many vehicles the whole job happens where it is parked. Simi Valley is about 35 miles from our Westwood storefront, so give us your exact location. If your car turns out to be dealer-only, we tell you that on the phone.
What proof of ownership do I need?
Photo ID plus registration or title that matches it, and the VIN. If the car is leased, financed, or in someone else's name, tell us when you call so we can say what paperwork works.
How much does a replacement car key cost without the original?
It depends on the make, model, year, key type, how the blade is cut, how many keys you want, and your location and time of day. We quote by phone once we have your VIN, and we say so honestly if the dealer is the lighter-cost option.
Will my old lost key still start the car after you make a new one?
On many vehicles we can remove the lost keys from the car's memory so they no longer start it. It depends on the system, and we tell you what applies to yours.
Can you help if my car is also locked?
Yes. Getting the door open is a separate step from making the key, and often we can do both in one visit. If the car must be towed, we can help with the lockout.
Do you work at night and on weekends?
Yes. The phone at (213) 577-1366 is answered 24 hours a day, 7 days a week, year-round, including holidays.
More locksmith help in Simi Valley
Lost Car Key Replacement near Simi Valley
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
