2021 Ford Explorer Key Replacement in Los Angeles, CA

The 2021–2026 Explorer uses the same key setup, so everything on this page applies to those years too. The full picture is on the Ford Explorer key guide.

2021 Ford Explorer: key facts

Key type: Smart / proximity key
Push-to-start: Yes
Transponder chip: Varies by trim — we confirm by VIN
Programming: Confirmed per vehicle — call us
All keys lost: Depends on trim — call to confirm

Push-button start with a smart proximity fob standard. Chip family is our era knowledge, not verified this session. NASTF's own service guidance confirms PATS functions through Ford FDRS/FJDS with a non-dealer login require NASTF VSP credentials or an OEM-assisted immobilizer request; aftermarket tool coverage for these years varies — we confirm current coverage before quoting, and say plainly if a job is dealer-or-VSP-only.

What kind of key does a 2021 Explorer use, and what does that mean for you?

The 2021 Explorer comes with push-button start and a smart proximity fob. The car senses the fob nearby, so you never put a key in an ignition. That also means there is no simple bladed key to copy at a hardware store the way there was on older vehicles.

Inside the fob there is a mechanical backup blade. It is how you get into the vehicle when the fob stops responding, and it is worth knowing where it is before you need it. Pull it out once, in your driveway, so you aren't learning how at a dark curb.

Our general understanding is that the immobilizer chip in this era sits in the 128-bit Hitag Pro family. We have not verified that for this exact model year, so treat it as background, not a promise. What matters for you is simple: the fob has to be electronically accepted by the Explorer, not just cut or cased correctly.

Key type: smart proximity fob, push-to-start
Mechanical backup blade: yes
Chip family: believed 128-bit (Hitag Pro), not verified

Is it a dead battery or a lost fob?

The most common complaint on these is a dead fob battery. The dash shows a 'No key detected' message even though the fob is in your pocket. The emergency blade will still open the door, so a dead battery rarely leaves you with a vehicle you can't enter.

Two other problems come up as well: fobs that were soaked in water, and fobs that were crushed, often in a back pocket or under a seat. If the fob is damaged, a new battery won't help, and replacing it is the next step.

If you can't tell which one you have, call us. Describing the dash message and what the fob does when you press a button usually sorts it out, and we'd rather tell you a battery is the problem than sell you a fob you don't need.

Duplicate key or all keys lost: how does it differ on this Explorer?

If you still have a working fob, adding another is the more straightforward situation. For this setup, an original key needs to be present to make a duplicate. The existing fob gives us something to work from, and that is generally the lighter-cost route.

All keys lost is a different job, and here we are going to be honest about what we know. Whether a 2021 Explorer can be handled by a non-dealer locksmith in an all-keys-lost situation is not something we have confirmed for this year, and the programming method itself is not verified in our data.

What we do know comes from NASTF's own service guidance: Ford immobilizer (PATS) functions through Ford's FDRS or FJDS software, with a non-dealer login, require NASTF VSP credentials or an OEM-assisted immobilizer request. Aftermarket tool coverage for these years varies. So we check current coverage before quoting, and if a job turns out to be dealer-or-VSP-only, we tell you plainly instead of letting you wait on us.

You call and tell us the situation: spare fob in hand, or none.
We take the VIN and confirm what the current tools cover for your Explorer.
We explain which route applies: duplicate from an existing fob, all-keys-lost through us, or a dealer-or-VSP path.
If it is something we can do, we come to you with the van or you visit the shop at 10740 Wilshire Blvd in Westwood.
The new fob is set up and tested with push-to-start before we leave you.

Locked out or need a locksmith now?

We answer around the clock, every day of the year.

Call (213) 577-1366

What affects the cost of replacing a 2021 Explorer fob?

Replacement fobs for smart-key vehicles cost more than older bladed keys, and that is simply how the technology works. We won't quote figures on a web page, because the real number depends on your situation, but these are the factors that move it:

Whether you have a working fob to copy or have lost every key
Whether the job is something non-dealer tools can do or needs a dealer or VSP route
The fob itself, which varies by the exact version on your Explorer
Whether the fob is damaged from water or a crush, or just needs a battery
Where you are: we can come to you with a mobile van, or you can visit the shop

What we haven't verified, and why we call you back with a VIN

For this model year, the chip family, the programming method and the all-keys-lost options are all unconfirmed in our records. Rather than guess, we confirm by VIN and in person before we commit to anything. If we can't do the job with the tools we have, we say so up front.

California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith for it before they start work. That is a fair question for us or anyone else.

Wilshire Lock & Key has been in business since 1987, with a Westwood storefront and our own mobile vans. When you call, you reach one company, not a dispatch middleman, and David oversees the work. If you want to compare other models, see our Ford Explorer key pages or the wider Ford key replacement guide, or browse all car key services. To start a request online, use our contact page.

Frequently asked questions

Can I still get into my 2021 Explorer if the fob battery dies?

Yes. The fob has a hidden emergency blade that opens the door even when the battery is dead. The 'No key detected' message is a common sign of a weak battery. If a new battery doesn't fix it, the fob may be damaged.

Do you need my original key to make a copy?

For this smart-fob setup, yes, an original key is needed to duplicate. If you have no working fob, it becomes an all-keys-lost situation, which we handle differently and confirm by VIN first.

Can a locksmith do an all-keys-lost job on a 2021 Explorer?

We haven't verified that for this year. Ford immobilizer functions with a non-dealer login need NASTF VSP credentials or an OEM-assisted request, and aftermarket tool coverage varies. We check current coverage before quoting and tell you if it is dealer-or-VSP-only.

Why does a smart fob cost more than an older car key?

It has electronics, a radio link to the vehicle and an immobilizer that must be accepted by the Explorer. Older bladed keys were mostly metal. The exact cost depends on the job type and the fob version, so we quote after we confirm your VIN.

My Explorer fob got wet. Is it ruined?

Not always, but water damage is a known problem with these fobs. If it no longer responds after drying and a fresh battery, it likely needs replacing. Call us and describe what it does, and we can tell you what to expect.

Can you come to me, or do I need to visit the shop?

Either. We have a storefront at 10740 Wilshire Blvd in Westwood and mobile service vans. Call (213) 577-1366 any hour, any day, and we will work out which fits your situation.

We cover all these cities

Reviewed by David, Owner & Lead Technician, Wilshire Lock & Key — in the locksmith trade since 1987.

Last updated 2026-10-11.