What does car key replacement involve?
Car key replacement is more than cutting a piece of metal. On many modern cars, the key has to be cut to fit the locks and also introduced to the car's immobilizer so the engine will start. That second step is programming, and it is the reason a hardware-store copy will sometimes open the door but refuse to start the car.
We do both steps at your vehicle. Our mobile vans carry key cutting and programming equipment, so a Monrovia driver does not have to arrange a tow to a dealer just to get a working key. Replacement keys, duplicate keys and spare keys all follow the same basic path. What changes is how much we have to work from, mainly whether you still have a working key to copy.
The type of key your car uses decides most of the rest: a traditional cut key, a transponder key, a remote head key, a flip key or a push-button smart key. We work that out from the year, make, model and VIN rather than guessing from a photo, because guessing is how people end up paying for the wrong blank.
What if I have lost every key to my car?
Losing every key is the situation that worries people most, and for us it is routine work. With nothing to copy, we work from the vehicle itself. The VIN and the car's locks give us what we need to produce a key that fits, and then we program it to the car. Some vehicles make this straightforward. Others take more steps, and a few push the job toward the dealer. Once we have your VIN, we tell you which of those your car is before we start anything.
We have a separate page on lost car key replacement in Monrovia that goes deeper on the all-keys-lost process. For now, one practical point: before you call, check the jacket you wore last, the bag you carried, the cupholders and the seat gaps. If a second key exists anywhere, even at a relative's house, a duplicate is usually the more economical route compared with starting from nothing.
How does mobile car key replacement work, step by step?
Here is how a typical call goes from your first ring to a key that starts the car.
- You call (213) 577-1366. A person answers at any hour. Tell us the year, make and model, and exactly where the car is parked.
- We ask for the VIN, which is usually visible at the base of the windshield on the driver's side or on the sticker in the driver's door jamb, and we confirm what kind of key your car uses.
- We ask for proof that the car is yours, such as registration or title along with your ID. This protects you as much as us.
- You hear what the job involves and what is driving the cost before we begin. If you decide not to go ahead, that is your call.
- We cut the key to fit your locks, using your existing key as the pattern or working from the vehicle if all keys are gone.
- We program the key to the car and test it properly: door, trunk if it has a separate lock, ignition, and any remote buttons.
- We hand over the finished key and suggest a spare while we are already there, since the second key is the easy part once the first one is done.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Can you do same day car key replacement in Monrovia?
Often, yes, because the work happens at the car and not at a shop across town. We will not promise it for every vehicle, though. Same day car key replacement depends on whether we can get the right blank or fob for your particular car, whether the vehicle has any unusual requirements, and where our vans are when you call. On the phone, we tell you plainly whether we can finish today. If we cannot, we say so instead of stringing you along.
Our storefront is at 10740 Wilshire Blvd in Westwood, about 29 miles from Monrovia, and the mobile locksmith side of the business is what actually comes to you. Because the phone is answered 24 hours a day, a key lost at night starts getting handled at night: the VIN is taken, the key type is identified and the plan is made. You are not left waiting for an office to open.
Why get a spare or duplicate car key before you lose the last one?
A duplicate car key made from a working key is almost always the lighter-cost job compared with an all-keys-lost replacement. There is no hunting for information the car should already have given us, and no pressure of being stranded while it happens. If you currently own only one key, the time to make a spare car key is today, not the morning you cannot find it.
Plain car key cutting is sometimes all that is needed, for example when a key has no chip in it. We confirm that by VIN and not by assumption. If your key has a chip, it needs transponder key programming as well as cutting. If your car uses a remote or a push-button smart key, the related work is covered under key fob replacement.
- You own only one key to a car you depend on every day.
- Several people in the household share one vehicle.
- A new driver in the family is about to start using the car.
- Your current key is worn, the blade is bent, or the remote buttons barely respond.
- You want a spare kept somewhere safe and not in the car itself.
What about ignition key replacement and worn keys?
Keys and ignitions wear together. A key that has been used for years rounds off its cuts, and the ignition cylinder wears to match. When a key starts to stick, turn hard or only work when jiggled, replacing the key is often the right first step. Sometimes, though, a fresh key still drags in the old cylinder. That tells us the problem is the ignition and not the key.
That is why ignition key replacement should start with a look at both parts. If the new key behaves badly in the old ignition, we will tell you, and the next step is ignition repair, not a second key that cannot fix the real problem. Better to learn this in the first visit than after paying for a key that never felt right.
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 car key replacement?
We do not publish a flat figure, because honest car key pricing depends on the car in front of us. These are the things that move the cost, roughly in order of importance:
- The type of key: a simple cut key, a transponder key, a remote head key or a smart key are very different jobs and parts.
- Year, make and model, which determine what equipment and key blanks are involved.
- Whether you have a working key to copy or all keys are lost. Duplicating is usually the more economical route.
- How many keys you want made in the same visit. The second or third key is typically less work than the first.
- Where the car is and when you call. Travel to Monrovia from our Westwood base and after-hours calls both play a part.
- Extra work uncovered along the way, such as a worn ignition or a key broken off in a lock.
- Whether the car falls into a category that needs dealer involvement, which we explain below.
When is the dealer the only option?
We would rather you hear this from us than learn it halfway through a job. Some vehicles, and some situations, are dealer-only or close to it. That can come down to how a particular manufacturer secures its keys, or to the exact model year. Where information about a specific car is unclear or conflicting, we do not bluff. We confirm by VIN and in person before we say yes.
If your car needs the dealer, we will tell you before any work starts and not after you have paid for a trip. If a smaller fix will solve your problem, for example a broken key extraction so that you do not need a whole new key, we will point you toward that. Our goal is to solve your actual problem, not to sell you the most expensive version of it.
Why call Wilshire Lock & Key for your car key?
We have been in business since 1987, and we serve 140 cities across Los Angeles and Ventura counties. Some things set us apart in a trade where many companies are call centers with a phone number and little else:
- A real storefront at 10740 Wilshire Blvd, Los Angeles, CA 90024, plus mobile service vans. There is an actual place behind the phone number.
- One company, no dispatch middlemen. The person who answers (213) 577-1366 works for the same company that sends the van.
- David, the owner and lead technician, oversees the work, so the standard of the job is not left to chance.
- Calls answered 24 hours a day, 7 days a week, year-round.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What should I know about locksmith licensing?
California requires locksmith companies to hold a license from the Bureau of Security and Investigative Services (BSIS), called an LCO license. Ask any locksmith for that license number before they start work on your car. It is a fair question and a reputable company will not mind answering it. For our wider range of car work, our automotive locksmith page lists what else we handle.
Car key replacement around Monrovia: Old Town, Station Square and the Highlands
Monrovia is a single ZIP code, 91016, but it covers very different parking situations, and each one shapes how a key job goes. In Old Town Monrovia along Myrtle Avenue, cars are often parked on the street or near restaurants and shops, and a lost key means we meet you wherever the vehicle sits. Around the Station Square area near Monrovia Station on the Metro A Line, the newer townhome developments mean many residents park in garages or assigned spaces, which is easy to work in as long as we know the exact location.
Up in the Monrovia Highlands, the hillside homes climb toward the foothills, and we come to your driveway or curb and cut and program the key right there. In South Monrovia, where smaller postwar houses and apartment complexes are common, shared parking and multiple drivers per household make a spare car key especially worthwhile. We also meet drivers along Huntington Drive, Foothill Boulevard and Myrtle Avenue, or in a lot such as Huntington Oaks Shopping Center.
Monrovia Canyon Park brings its own scenario: a hiker comes back to the lot and the key is gone, lost on the trail or locked inside the car. The first problem is getting in, which is a car lockout job. If the key is truly lost and not just inside the vehicle, we can move straight on to making a new one at the same visit.
The local climate matters a little too. Monrovia's hot summers and the periodic Santa Ana winds are hard on plastic fob cases and button pads, and wind-blown dust works its way into key blades and ignition slots. A fob that is cracking or a key that feels gritty in the lock is worth dealing with before it fails completely.
Frequently asked questions
How much does car key replacement cost in Monrovia?
It depends on the key type, your car's year, make and model, whether you have a key to copy, how many keys you want, and the time and place of the call. We explain what is driving the cost before we start, so you can decide with the facts.
Do I need my original key to get a duplicate car key?
A working key makes things simpler and usually less costly, because we can copy it. But it is not required. If you have lost every key, we can still make one from the vehicle using the VIN and proof of ownership, as long as your car is not a dealer-only case.
Can you make a car key if I have lost all of them?
In most cases we can, and we do it at your car. We take the VIN, confirm the key type and tell you straight whether your vehicle is something we can handle or something that needs the dealer.
Will a locksmith key work as well as a dealer key?
A key that is cut correctly and programmed to your car should open the doors and start the engine the same way. We test every function before we hand it over. The difference people notice most is that we come to you, so there is no tow to a dealership.
Do I have to bring my car to you?
No. Our mobile vans come to your car in Monrovia, whether that is a driveway in the Highlands, a street in Old Town or a parking lot. Our storefront is in Westwood, but most car key jobs happen where the vehicle is parked.
What do I need to show to prove the car is mine?
Expect to show your ID along with registration or title for the vehicle. We ask this on every car key job. It protects owners from someone else making a key to their car.
Can you program a key I bought online?
Sometimes. It depends on the key type and the quality of the part. Online keys vary, and some do not match the car's system properly. Call us with your year, make, model and VIN, and we will tell you whether it is worth bringing or whether a key from us is the safer route.
Do you handle car key problems at night in Monrovia?
Yes. Our phone at (213) 577-1366 is answered 24 hours a day, 7 days a week, year-round. For a late-night call we get the VIN, work out the key type and tell you honestly what we can complete and when.
More locksmith help in Monrovia
Car Key Replacement near Monrovia
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.