What does key fob replacement actually involve?
A key fob is the small electronic device that locks and unlocks your car and, on many vehicles, starts it. Some fobs are a plastic remote with buttons, attached to or built into a metal key. Others are smart fobs, also called proximity keys, that stay in your pocket or bag while the car senses them nearby and lets you press a button to start the engine. People search for this under many names: remote car key replacement, smart car key replacement, push to start key replacement, push button start key replacement. They all describe the same job, which is getting you a working fob that your particular car recognizes and obeys.
Replacing one is not like cutting a house key. A fob contains a transmitter and usually a security chip, and the car has to be told to accept it. That means two separate pieces of work: getting the right fob hardware for your vehicle, and programming it to that vehicle. We do both, either at your car in Covina or at our storefront at 10740 Wilshire Blvd in Westwood.
This page is about the fob itself. If what you really need is a chipped key without remote buttons, our transponder key programming page covers that work. If you are not sure what kind of key your car uses or you are weighing every option for a new key, start with our overview of car key replacement in Covina and we will sort out which path fits.
What should you do when your fob is lost, cracked, or just stopped working?
Most fob calls come from a handful of situations. The fob is lost and there is no spare. The case cracked after a drop, or the fob went through a wash with the jeans it was in. The buttons are worn smooth and only work half the time. The car only responds when the fob is held right up against the dash. Or the battery died, you swapped in a fresh one, and nothing changed, which usually points to damage on the board inside or a fob that has lost its pairing with the car.
If the fob is gone entirely and you have no other working key, the situation is more urgent, because the car may not start and may not even be accessible. We handle that under lost car key replacement, where the starting point is different from simply adding a spare. If the fob is sitting on the seat or in the ignition area and the doors are locked, that is a car lockout first, and a fob question second.
Swapping the battery is the first thing most people try, and it is worth doing if the fob still lights up or works occasionally. If it has been completely dead for a long time, has taken on moisture, or has a visibly cracked case, the battery is rarely the whole story. When you call, tell us the make, model, and year, what the fob does and does not do, and whether you have any other key. We will tell you plainly whether a battery is likely to be enough or whether you need a replacement fob.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How does key fob programming work, step by step?
Here is how a typical call goes. The exact details change from one vehicle to the next, but the order stays the same. Whether we come to you through our mobile locksmith service or you drive to the storefront, the process is the same.
- You call (213) 577-1366 and a person answers, at any hour. We ask for the make, model, and year, the VIN if you can read it off the dash or door jamb, and whether you have any working key left.
- We work out what your car uses: a remote head key, a flip key, or a proximity smart key with push button start. Some of that we can tell from the year and model. Some we confirm by VIN, because the same model can change fob type partway through its production run.
- We tell you whether your vehicle is one we can handle or one that has to go through the dealer. We would rather say that on the phone than after we have driven to you.
- We confirm ownership. We ask for photo ID and something tying you to the vehicle, such as registration or title. This protects you, since the same service in the wrong hands is how cars get stolen.
- We supply the fob, cut the emergency key blade if the fob has one, and program the fob to the car. Then we test every button, the lock and unlock functions, and for smart keys, the push-button start, before we call the job finished.
- If you want a spare key fob, this is the moment to add one. Programming a second fob during the same visit is usually the more economical route compared with calling us back later, because the travel and setup are already done.
Remote key, flip key, or push-to-start smart key: what is the difference?
The type of fob you have shapes how it is replaced, so it helps to know what you are holding. Here are the three common styles we see.
- Remote head key: a metal key blade with the lock and unlock buttons built into the plastic head. The blade turns in the ignition and the car reads the chip inside; the buttons work the doors and trunk.
- Flip key: the same idea, except the blade folds into the fob like a pocketknife. Easier to carry, but the hinge is a common failure point.
- Proximity smart key: used with push button start. The car detects the fob nearby, so you can unlock the door and start the engine without taking it out of your pocket. Most have a small emergency blade hidden inside for a dead battery or dead car.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Can a locksmith program my car, or does it have to go to the dealer?
Sometimes yes, sometimes no, and we will not pretend otherwise. Some makes and model years lock programming behind manufacturer-only tools, or require a code or a key that can only be ordered by VIN. Because we cannot verify every vehicle without seeing it, we confirm by VIN or in person instead of promising over the phone. If your car is a dealer-only case, we will say so directly and point you the right way instead of sending a van to your driveway for nothing.
There is a middle category too: cars where we can do the programming but the fob or key has to be ordered ahead by VIN, which affects timing. And there is a difference between adding a fob when you still have a working one and starting from zero when every key is gone. On some vehicles, the all-keys-lost job is more involved. We explain which situation you are in before any work begins.
One more point on used and online fobs. A fob bought from an online listing may be locked to another car, may be the wrong frequency, or may not be programmable at all. If you have one, bring it or describe it and we will check it first. Sometimes it can be used; sometimes you will have spent money on a fob that cannot be reused, and we would rather tell you that before you buy than after.
What affects the cost of a key fob replacement in Covina?
We do not publish flat figures, because the same phrase, key fob replacement, covers very different jobs. What we can do is tell you exactly what moves the cost, so a quote makes sense when you hear it.
Coming to the storefront can be the lighter-cost option when the car is drivable and you have a working key, since there is no travel involved. A mobile visit to Covina is a real convenience, and travel is part of what it covers. We explain what is driving the cost on your job before we start work, and you can reach us through the contact page or by phone. If any company will not tell you what a job includes, treat that as a warning sign.
- The type of fob: a basic remote costs differently than a proximity smart key for a push button start vehicle.
- Make, model, and year, including whether a suitable fob is readily available for your car.
- Whether you have a working key. Adding a spare is a different job than starting from no keys.
- Whether an emergency key blade has to be cut, and whether that cut depends on a code tied to your VIN.
- How many fobs you want programmed during the visit.
- Where the work happens: at your car in Covina or at our Westwood storefront, and the time of day you call.
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 key fob?
There are a few plain reasons, and none of them are dramatic.
California requires locksmith companies to hold a BSIS LCO license. Whoever you hire for fob work, ask for the license number and check it with BSIS before anyone touches your car. That is a fair question to ask any locksmith, and a company that dodges it is telling you something.
- We have been in business since 1987, so car key work is not a side project for us.
- We have a real storefront at 10740 Wilshire Blvd in Westwood plus mobile service vans, so you can come to us or have us come to you.
- You are dealing with one company, not a dispatch middleman who sells the call to whoever picks it up. The phone is answered 24 hours a day, 7 days a week, year-round, at (213) 577-1366.
- David, the owner and lead technician, oversees the work. Our wider automotive locksmith service is built around the same approach: explain the job, confirm the car, do the work, test it.
Key fob service across Covina: downtown, Covina Hills, and the corridors
Our base is in Westwood, about 32 miles from Covina, and we serve the city across ZIP codes 91722, 91723, and 91724. Rather than quote you a canned arrival estimate, we give you a realistic one when you call and we know where you are.
In Downtown Covina around the Citrus Avenue district, a lot of parked cars belong to people working shifts, eating out, or catching a show at the Covina Center for the Performing Arts. Those are the situations where a fob gets dropped, left behind, or quits with the car parked on the street. The Arrow Highway corridor and parts of the Azusa Avenue corridor have apartment complexes, which usually means shared parking, several drivers per household, and a real need for a spare fob that does not live in the same bag as the original. If you are a landlord or manager dealing with vehicles in a shared lot, we can talk about that when you call.
Think of a commuter who parks at the Covina Metrolink Station for the day and comes back to a fob that will not work, or no fob at all. That is the kind of call we plan for. If the car is locked with the fob inside, that starts as a lockout; if the fob is lost or dead, it becomes a replacement and programming job, and we can handle either from a single phone call. We can meet you in a parking lot near places like Emanate Health Inter-Community Hospital, Covina Park, or IKEA Covina, where people park for hours and are in no mood to wait on a locksmith across town.
Covina Hills in the southeast has larger, semi-rural lots with many gated driveways, and Charter Oak, the adjacent unincorporated area with Covina addresses, and the Badillo Street corridor are also within our service area. A gate remote is a separate device from a car fob, so tell us on the phone which one you mean. Summers here are hot and dry, with little marine-layer relief, and a car baking in a parking lot is not kind to small batteries and plastic fob cases. Replacing a weak battery early is cheap insurance, though if the case is already cracked or the buttons are failing, replacing the fob is the more reliable fix.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366How can you avoid a second fob emergency?
Most fob emergencies are avoidable, and the single best habit is to have a second working fob before you need one. Programming a spare while you still have an original is a simpler job than replacing a lost key, and it means a dead battery or a dropped fob is an annoyance instead of a stranded car.
- Program a spare key fob now, while the original still works, and keep it somewhere other than your car or your everyday bag.
- Replace the fob battery at the first sign of reduced range or a slow response, not after it quits entirely.
- Know your car's backup start method. Many smart-key vehicles have a way to start with a dead fob, but the method varies by vehicle, so check your owner's manual.
- Do not buy a fob online and assume it will work. Check with us first so you do not pay for a fob that cannot be programmed.
- If the fob is fine and the car still will not start, the problem may be elsewhere. Our ignition repair page covers that side of things.
Frequently asked questions
How do I get a replacement key fob in Covina if I lost my only one?
Call (213) 577-1366 and tell us the make, model, year, and VIN if you can read it. We confirm what your car uses, check whether it is a case we can handle or a dealer-only one, verify ownership, then supply and program a new fob. Having no working key makes the job more involved, and we explain that before we start.
Can you program a key fob at my car, or do I have to bring it in?
In most cases, our mobile vans come to you in Covina and program the fob on the spot. If your car is drivable and you have a working key, coming to our Westwood storefront can be the lighter-cost option. Either way, we confirm your vehicle by VIN or in person first.
Can you replace a push-to-start or push button start key?
Yes, for many vehicles. Proximity smart keys need the right hardware and programming, and some makes and model years restrict programming to dealer tools or VIN-ordered keys. We tell you honestly up front which side your car falls on instead of promising before we know.
Will I have to go to the dealer?
Not always, but sometimes. Some vehicles can only be programmed with manufacturer-only tools or need a key ordered by VIN. If yours is one of those, we say so plainly and point you in the right direction. We confirm by VIN or in person rather than guess over the phone.
Can I buy a fob online and have you program it?
Bring it or describe it to us first. Online fobs are sometimes locked to a different car, use the wrong frequency, or simply cannot be programmed to your vehicle. We check before programming, and we would rather tell you if it will not work than have you find out after buying it.
How long does key fob programming take?
It depends on the vehicle. Adding a fob when you still have a working one is usually simpler than an all-keys-lost situation, and some cars require a key ordered by VIN ahead of time. When you call, we explain what to expect for your specific car instead of giving a generic answer.
What do I need to prove I own the car?
Bring photo ID and something that connects you to the vehicle, such as the registration or title. We ask for this every time. It protects you and every other car owner, because fob programming in the wrong hands is a common way vehicles get stolen.
If I replace a lost fob, will the old one still work?
On some vehicles, the car's memory can be cleared of old fobs during programming so a lost one no longer works. Not every vehicle supports that, so we confirm by VIN or in person and tell you what your car allows before the work starts.
Do you come to Covina Hills and Charter Oak, or just central Covina?
We serve Covina across ZIP codes 91722, 91723, and 91724, including Downtown Covina, Covina Hills, Charter Oak, and the Arrow Highway, Azusa Avenue, and Badillo Street corridors. Call (213) 577-1366 and give us your location, and we will tell you what arrival to expect.
More locksmith help in Covina
Key Fob Replacement near Covina
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.
