What does car key replacement involve for an Altadena driver?
Car key replacement is more than cutting a piece of metal. On many modern cars, the key or fob also has to be recognized by the vehicle's immobilizer, the security system that decides whether the engine is allowed to start. So the job has two halves: making a key that physically fits, and programming it so the car accepts it. Done properly, both halves happen at your vehicle.
That is why we come to you. Our mobile vans carry key-cutting and programming equipment, so whether your car is in a driveway off Santa Rosa Avenue, in front of a house in West Altadena, or parked at the edge of a canyon trail, the work happens where the car sits. In most situations you do not need a tow to a dealership just to get a key made. We say most on purpose, and a later section explains the exceptions honestly.
This page covers spare keys, duplicate car keys, all-keys-lost replacement, and ignition keys. It is one part of our wider automotive locksmith work. When your problem is really something else, such as a fob that needs its own attention or an ignition cylinder that has failed, we point you to the right page instead of pretending one service covers everything.
Which car key situation are you in?
The word replacement covers several very different situations, and the situation drives almost everything about the job: what we need from you, what we can do at the curb, and what affects the cost. Here are the common ones.
If you are not sure which one you are in, that is fine. Describe it on the phone and we will sort it out with you.
- A spare or duplicate car key: you still have a working key and want a second one before you need it. This is usually the calmest and more economical route, because a working key gives us something to work from.
- All keys lost: you have no key at all. We can make a new one for your vehicle using its VIN and proof of ownership. Our page on lost car key replacement walks through that situation in more detail.
- A worn, cracked, or broken key: a key that is bending, losing its cuts, or sticking in the door is worth replacing before it fails completely. A key snapped off inside a lock is a separate extraction job, and we will tell you when we see it.
- A fob that stopped working: sometimes it needs a battery, sometimes a new unit, sometimes reprogramming. Our key fob replacement page covers that side.
- A key that will not turn the ignition: the key may be worn, or the ignition itself may be the problem. If it is the ignition, see ignition repair, because a new key will not fix a damaged cylinder.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How does mobile car key replacement work, step by step?
Every vehicle is different, but the shape of the visit is consistent. Here is how a typical call goes from your first ring to a key that starts the car.
- You call (213) 577-1366, at any hour. Give us the make, model, and year, tell us what happened to the key, and tell us exactly where the car is parked.
- We work out what your vehicle needs. That means looking at the VIN and the type of key or fob the car uses, and checking whether anything makes the job one only a dealer can do. We tell you what we find before work begins.
- We confirm that the car is yours. We ask for ID and registration or title. This is for your protection as much as ours, and a locksmith who skips it is a locksmith to think twice about.
- We explain the cost before cutting anything. The factors are laid out below, and you should hear how they apply to your car before you say yes.
- We cut the key. Depending on the vehicle, that means cutting from a code, from an existing key, or from the information the car's lock requires.
- We program the key or fob to the vehicle where programming is needed. Our page on transponder key programming explains this part in more depth.
- We test everything with you standing there: the door locks, the trunk if it uses the same key, and the ignition, started more than once. If you want a spare while we are already on site, this is the moment to say so.
What affects the cost of car key replacement?
We do not put 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 on the quote surprises you.
One practical tip: if you are going to need a second key, having it made during the same visit is usually the more economical route compared with calling us back later for a separate trip.
- The type of key. A plain metal key, a key with a built-in security component, a remote-head key, and a smart or proximity key are very different pieces of hardware, and they carry different costs.
- The make, model, and year. Manufacturers handle key security differently, and the same type of job can be simpler on one vehicle than another.
- Spare versus all keys lost. Copying from a working key is generally more straightforward than building a first key from nothing.
- How many keys you want. Programming and cutting multiple keys in one visit is different from coming back for each one.
- Time and place. Middle-of-the-night calls, holidays, and distance all play a role in a mobile job. Altadena is a drive from our Westwood storefront, and that is part of how we plan a visit.
- Whether the vehicle needs special tools or access. If the job turns out to require dealer-level access, we tell you before any work starts.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366When is a car key a dealer-only job?
Not every vehicle can be handled on the street, and we would rather say so than waste your evening. Whether a particular make, model, and year needs a chip, a fob, a special code, or a dealer visit varies, and we do not guess over the phone. We confirm by VIN and in person.
If your vehicle turns out to be one where the manufacturer restricts key programming to its own dealers, we will tell you plainly, before cutting or programming anything. We do not pretend to be able to do a job we cannot do, and we do not hold your car hostage to a visit that cannot succeed.
If you already know the dealer is your only option, you can still call us to talk through what you need to bring, such as your registration and ID, so the dealer visit goes smoothly.
Why call Wilshire Lock & Key for a car key?
There are plenty of ways to end up with a key, and plenty of people who will answer a phone and promise to send someone. Here is what is actually different about us.
One more thing worth knowing: California requires locksmith companies to hold a BSIS LCO license. Ask any locksmith, including us, for their license number before they start work. A legitimate company will give it to you without fuss.
- We have been in business since 1987, so we have seen how car keys, and the security around them, have changed over many years.
- We have a real storefront at 10740 Wilshire Blvd in Westwood, plus mobile service vans. You are not calling a name that disappears behind a call center.
- We are one company, with no dispatch middlemen. The people who answer the phone are the people who stand behind the work.
- David, the owner and lead technician, oversees the work. He is not a name on a banner; he is accountable for how the job is done.
- The phone is answered 24 hours a day, 7 days a week, year-round, at (213) 577-1366. Losing a key does not keep business hours, and neither do we.
What does car key replacement look like around Altadena?
Altadena is an unincorporated part of Los Angeles County, with ZIP code 91001, and it sits about 26 miles from our Westwood base. The place has a character of its own, and it shapes what a car key call tends to look like here.
Start with the terrain. Altadena runs up into the foothills, with the Eaton Canyon Nature Area, the Cobb Estate and Sam Merrill Trailhead, and the canyon areas around Rubio Canyon and Millard Canyon. People park at trailheads, go for a hike, and sometimes come back without the key that was in a pocket. That is where mobile car key replacement matters most. If the key is lost on the trail, a new one can be made at the car. If the key is locked inside the vehicle instead, that is a different job, and our car lockout page covers it.
Now the neighborhoods. A driver in Janes Village or near the Christmas Tree Lane district on Santa Rosa Avenue often parks on the street or in a narrow driveway, so we ask for the exact spot and plan around where we can safely work. In The Meadows and East Altadena, the same questions apply: where the car is, how we reach it, and who can show us the registration. In La Viña, a gated community at the northwest edge, tell us on the phone that the car is behind a gate so we can plan access before the van arrives.
West Altadena deserves a moment of its own. The January 2025 Eaton Fire destroyed thousands of structures there and elsewhere in Altadena, and the area is now a mix of surviving homes and active rebuilding. If your car keys were lost along with a house, or your household is living out of a vehicle, a rental, or a temporary address, you can still get a new key made. A car key is made from the vehicle's identity and your proof of ownership, not from the original key. You may need replacement documents first, and we can tell you what we need so that the visit is not wasted.
The climate matters too. Altadena's foothill summers run hotter than the basin, with intense sun and strong, dry Santa Ana winds carrying grit off the San Gabriels. Heat and sun are hard on key fobs, batteries, and plastic, and grit works its way into locks and ignitions. A key that has begun to wear is better replaced on your schedule than at a trailhead on a windy afternoon.
If you live in Altadena and want the full picture of what we do locally, see our Altadena locksmith services page. For jobs where you simply need us to come to you, our mobile locksmith page explains how that works.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Should you make a spare car key before you need one?
Yes, in most cases, and the reason is simple: it is almost always easier to copy a working key than to build the first key from nothing when none is left. A spare car key that lives somewhere safe turns a bad day into a minor inconvenience.
Keep the spare away from the car and away from your usual key ring. A spare in the glove box or under the bumper gives little protection if the car is the problem. A trusted person's home, or a secure spot in your own, is a better choice.
Check the spare you already have, too. Some spares were made long ago and are rarely tested. If yours has never started the car, or the fob buttons have gone dead, tell us when you call. It is far better to find that out in your driveway than at a trailhead.
How should you get ready before we arrive?
A few minutes of preparation makes the visit smoother and often shorter. Here is what helps.
- Have your VIN ready. It is usually visible through the windshield on the driver's side or on the door jamb sticker.
- Have your ID and your registration or title where you can reach them.
- Find any key you do have, even a broken, worn, or old one. It helps us.
- Tell us the exact parking spot and whether there is a gate, a locked lot, or limited street access.
- Give us the make, model, and year, plus what kind of key you have now, such as a plain key, a remote-head key, or a push-button fob.
- Mention any other keys you want made while we are there, so we can plan the visit around the whole job.
Frequently asked questions
Can you make a new car key if I have lost every key?
In many cases, yes. We work from the vehicle's VIN and your proof of ownership, then cut and program a new key at the car. Whether a given make, model, and year can be done on site or needs a dealer is something we confirm by VIN and in person, and we tell you before any work starts.
Do I have to go to the dealer for a replacement car key?
Often you do not. Our mobile vans carry the equipment to cut and program many keys at your vehicle. Some vehicles are dealer-only, and we will say so plainly once we have checked your VIN, rather than letting you pay for a visit that cannot succeed.
How much does car key replacement cost in Altadena?
It depends on the type of key, the make, model, and year, whether you have a working key to copy, how many keys you want, and the time and place of the call. We explain how each applies to your car and give you the cost before we cut anything.
Can you do same day car key replacement?
For many vehicles, the cutting and programming happen in a single visit at your car, so the job can finish the same day. Our phone is answered 24 hours a day, 7 days a week. Whether your particular car can be done on site is confirmed by VIN.
What do I need to show you to prove the car is mine?
We ask for your ID and the vehicle's registration or title. If your documents were lost, tell us when you call and we will explain what you can gather first. We do not make keys without confirming ownership.
I lost my key on a trail near Eaton Canyon. Can you meet me at the car?
Yes. Tell us where the car is parked, including the nearest trailhead or street, and we will come to you. If the key is locked inside the car rather than lost, that is a lockout, which is a related but separate service.
Will the lost key still start my car after you make a new one?
It depends on the vehicle. Whether old keys can be removed from a car's memory varies by make, model, and year, and we confirm by VIN. Ask us when you call if this is a concern, such as when a key may have been stolen.
Do you serve all of Altadena, including La Viña and West Altadena?
We serve Altadena, ZIP code 91001, including neighborhoods such as West Altadena, East Altadena, Janes Village, and The Meadows. If your car is behind a gate, as in La Viña, tell us when you call so we can plan access.
Can you make a spare car key if I only have one working key?
Yes, and it is usually the more economical route compared with waiting until all your keys are gone. We cut and program the spare at your car, and test it with you before we leave.
More locksmith help in Altadena
Car Key Replacement near Altadena
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
