What does key fob replacement in San Dimas actually include?
A key fob is the remote, or the smart key, that locks and unlocks your car and, on many vehicles, lets it start. When one is lost, cracked, soaked, or just stops answering the car, you need a replacement that the vehicle accepts, not one that merely looks right. That is the job: sourcing the correct fob for your vehicle, cutting the emergency blade if it has one, and programming it so the car recognizes it.
We work across the whole range: remote head keys with a blade and buttons, flip keys, standalone remotes, and proximity fobs for push-button-start cars. We also make spare key fobs when you still have a working one in hand. That is the calmer situation, and it is usually the more economical route compared with starting from zero keys.
This page is about the fob itself. If what you really need is a plain cut-and-programmed key, our car key replacement page covers that, and transponder key programming covers chip keys that have no buttons at all.
Why do key fobs stop working?
Most fob calls we get start with one of a handful of causes. Knowing which one you have changes what we do, and sometimes it means you do not need a new fob at all.
If you have not changed the battery in a couple of years, try that first. Many fobs use a small coin battery that is cheap and easy to swap, and we will tell you straight on the phone if that sounds like your problem. We would rather you save the visit than pay for a replacement you did not need.
- A weak or dead battery, which shows up as shorter range, needing several presses, or the car saying it cannot detect the key.
- Worn or collapsed buttons, common on fobs that have lived on a keyring for years.
- Water or moisture damage after a pocket trip through the wash or a day at the pool.
- A cracked case or a broken circuit board after being dropped, stepped on or run over.
- A fob that is simply gone: lost, stolen, or left somewhere you cannot get back to.
- A fob that still looks fine but has lost its link to the car, which sometimes happens after a battery or module repair.
How does key fob programming work, step by step?
Programming is where a fob replacement succeeds or fails. The car has to accept the new fob as one of its own, and the method depends on the vehicle. We confirm what your car needs before we commit to anything, rather than guessing at the curb.
- You call (213) 577-1366 and give us the year, make and model, and tell us whether the car has a key slot or a start button.
- We ask what you still have: a working key, a dead fob, or nothing at all. That tells us how involved the job will be.
- We confirm the exact fob and programming method by VIN or in person, because the same model can use different parts depending on year and trim.
- A mobile van comes to your car. If the vehicle is not drivable, that is not a problem, since the work happens where it sits.
- We verify ownership, which is standard practice for any car key work.
- We cut the emergency blade if needed, then program the new fob to the car and, where the vehicle allows, add or remove fobs in its memory.
- We test every button and the start function with you before we leave, so you see it working.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Remote, smart key or proximity fob: which one do you have?
People often describe their key in different words than the trade uses, so here is the quick sort. Knowing which type you carry helps us tell you what the replacement involves.
Push-to-start and push-button-start key replacement is its own category because there is no key turned in the ignition. The car looks for the fob nearby and allows the start button to work. If you have lost that fob entirely, the car's security system has to be taught a new one. Some vehicles allow that to be done on-site by a qualified locksmith, and some lock that access behind dealer-only procedures. We will tell you plainly which side your car falls on once we have the VIN, and we will not start work we cannot finish.
- Remote head key: one piece, a metal blade and lock-unlock buttons together.
- Flip key: the blade folds into the fob body.
- Standalone remote: buttons only, with a separate chip key for starting the car.
- Proximity or smart key: no blade needed to start, usually carried in a pocket or bag, with a hidden emergency blade inside.
- Push-button-start fob: a proximity key paired with a start button on the dash.
What affects the cost of a key fob replacement?
We do not quote numbers in a web page because the honest answer depends on your car, and a flat figure would be wrong for many of you. What we can do is explain what moves the cost, so a quote on the phone makes sense when you hear it.
If you have a working key and just want a spare key fob, the job is usually simpler than a replacement when every key is gone. Adding to a car that is already communicating with a key is generally the lighter-cost scenario. Starting from no keys at all often takes more steps and more time on site.
- The vehicle itself: year, make, model and trim decide which fob hardware is needed and how the car accepts it.
- Fob type: a basic remote is a different part than a proximity smart key.
- Keys on hand: a spare added to a working key is generally simpler than an all-keys-lost situation.
- Emergency blade: cutting a blade adds a step that a blade-free fob does not need.
- Programming method: some cars accept on-site programming, while others need extra security access.
- Where and when: a mobile visit to your location, and the hour you call, factor into the total.
- Parts sourcing: availability of the right fob for your vehicle can affect timing and cost.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366Can I buy a fob online and have it programmed?
Sometimes, yes, but it is a gamble worth understanding. Online listings often do not match the exact frequency, chip or part number your car needs, and a fob that looks identical can still refuse to pair. Some used or refurbished fobs are already locked to another vehicle and cannot be reused. If you already bought one, call us with the part number and we will tell you honestly whether it is worth trying before you spend more.
If you would rather skip the guesswork, we source the fob that matches your VIN, cut it and program it in one visit. If the car turns out to be a dealer-only case, we will say so up front instead of leaving you with a fob that does not work.
Why call Wilshire Lock & Key for a key fob?
Fob work is detail work. Pairing the wrong part or rushing a security procedure can leave you worse off than when you called, so who you hand the job to matters.
California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith for it before they touch your car, including us. It is a fair question and a good habit.
- In business since 1987, so we have seen how car security has changed across many years of vehicles.
- A Westwood storefront at 10740 Wilshire Blvd plus mobile service vans, so the work comes to you.
- One company from first call to finished fob. No dispatch middleman passing your job to a stranger.
- David, the owner and lead technician, oversees the work and the standards we hold it to.
- Phone answered 24 hours a day, 7 days a week, because dead fobs rarely wait for business hours.
- Plain explanations about what your car needs, including when it is a dealer-only case.
Where in San Dimas do we replace and program key fobs?
San Dimas is a spread-out, car-dependent city, and most fob problems happen where you are, not where it is convenient. Our vans reach the 91773 ZIP code from the Westwood storefront, roughly 40 miles away, and we come to the car so you do not have to move it.
A very common scene is the commuter who loses a fob and is stuck at the San Dimas A Line park-and-ride. A car that cannot be started or driven is a poor candidate for a tow, and programming at the car solves it where it sits. If you are locked out as well, our car lockout service comes first, then we handle the fob.
Around the Via Verde planned community, the townhomes, condos and golf-course homes tend to mean shared parking, garages and guest spaces, and a lost fob there is often a driveway or garage job. On the Lone Hill Avenue corridor and along Foothill Boulevard, we also get calls from people who dropped a fob while running errands. Downtown on Bonita Avenue, shoppers and shop workers lose fobs between parking spots and storefronts.
Summer heat is a factor here. San Dimas is inland valley territory, with highs well above the coastal basin, and fobs left in a hot car or a pocket in the sun are hard on batteries and plastic cases. If a fob has gone sluggish in late summer, a new battery is the first thing worth trying before a replacement.
Park days at Frank G. Bonelli Regional Park and Raging Waters are another pattern. Fobs get wet, sandy or dropped near the water or the lot, then fail on the walk back. We can meet you in the lot, even if the car will not unlock.
Locked out or need a locksmith now?
We answer around the clock, every day of the year.
Call (213) 577-1366What should you have ready when you call?
The more we know at the start, the faster we can tell you what is possible. Here is what helps.
- Year, make and model of the car, and the trim level if you know it.
- Whether the car has a key slot or a push-button start.
- What you still have: a working key, a broken fob, or none.
- The VIN, visible through the windshield at the dash or on your registration.
- Your ID and proof of ownership, which we check as part of the job.
- Where the car is parked, and whether it can be moved or is stuck.
When a fob is part of a bigger problem
Occasionally what looks like a fob failure is something else. If the fob works the doors but the car will not start, or the key sticks or will not turn, the trouble may be in the ignition. In that case, our ignition repair service is the right fit. For a full picture of what we do on vehicles, see our automotive locksmith page. If you simply cannot reach us by phone right away, use the contact page, though calling is faster.
Frequently asked questions
Can you come to my car in San Dimas to program a key fob?
Yes. Our mobile locksmith vans come to where the car is parked in San Dimas, whether that is a driveway, a lot, or the A Line park-and-ride. We confirm what your vehicle needs by VIN or in person first, and we tell you if it is a dealer-only case.
Do I need my original key fob for programming?
Not always, but having one makes things simpler. With a working key we can often add a spare. With none, the process is usually more involved. The exact steps depend on the vehicle, so give us the year, make and model when you call.
What if I lost every key fob for my car?
Call us anyway. All-keys-lost cases are common, and many cars can be handled at the vehicle. Some vehicles lock that work behind dealer-only security access, and if yours does, we say so plainly rather than starting a job we cannot finish.
Can you replace a push-button-start fob?
Yes, for many vehicles. Proximity fobs have to be matched to your exact car and taught to its security system, so we confirm the part and method by VIN before we begin. If your car needs dealer-only procedures, we will tell you before any work starts.
Will my lost fob still work after you program a new one?
On many vehicles, the car's memory can be reset so that a lost fob is removed and no longer works. Whether that is possible depends on the vehicle, so we confirm it for your car. If theft is a concern, mention it when you call.
Is it better to replace the fob or just the battery?
If the fob is physically fine but weak, a battery is the lighter-cost fix, and we will tell you if that sounds like your case. Replace the fob when it is lost, cracked, water-damaged, or has stopped working even with a fresh battery.
How long does key fob programming take?
It depends on the vehicle, whether you have a working key, and whether the right fob is on hand. We give you an honest expectation on the phone once we know the car. We do not promise a number we cannot stand behind.
Do you also help if I am locked out and my fob is missing?
Yes. We can open the car first with our car lockout service, then move to the fob. Having both handled by one company in one visit keeps it simpler. You can also reach us at (213) 577-1366 at any hour.
More locksmith help in San Dimas
Key Fob Replacement near San Dimas
Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.
Last updated 2026-10-11.