2010 Lexus GX Key Replacement

The 2010–2023 GX uses the same key setup, so everything on this page applies to those years too. The full picture is on the Lexus GX key guide.

2010 Lexus GX: key facts

Key type: Smart / proximity key
Push-to-start: Yes
Transponder chip: Varies by trim — we confirm by VIN
Programming: OBD
All keys lost: We can originate new keys on site

GX460: HYQ14ACX smart fob (GNE board 271451-5290). Catalog listings disagree on the chip inside this fob — most describe it as 'DST+'/DST80, but at least one lists DST40 — so we match replacements by the fob's FCC ID and board number, not the chip label. All-keys-lost via OBD smart-code reset with professional tools; reused OEM fobs need an immobilizer reset.

What kind of key does a 2010 Lexus GX use?

The 2010 GX 460 runs on a smart proximity key. The fob stays in your pocket, the SUV senses it, and you start the engine with the push-button. There is no ignition key to turn. The fob listed for this truck is the HYQ14ACX smart fob, built on a board numbered 271451-5290.

Inside that fob is a mechanical backup key. It is there for the day the fob battery dies or the door can't be unlocked electronically. Keep it with you or in a known place, because it is the one part of the system that works without power.

What this means for you: a lost fob is not a simple copy job. The replacement has to be matched to the truck and programmed to it, and that is why it costs more than replacing a traditional bladed key.

Spare key or all keys lost: what changes?

For this setup, making an additional key is easiest when you still have an original working key. We use it as the reference while we program the new fob. If you have already lost every key, that is still workable. All-keys-lost on this GX is handled through the OBD port with professional tools that reset the smart-code, and it does not require NASTF secure data registry access.

If you plan to reuse an older factory fob, for example one from a parts source, it generally can't just be paired. A used OEM fob needs an immobilizer reset first, so tell us up front if that is the plan.

You call (213) 577-1366 and give us the year, model and, if you can read it, the VIN.
We check your fob details against the board number and FCC ID rather than relying on a catalog photo.
We come to you with a mobile van, or you come to our Westwood storefront at 10740 Wilshire Blvd if the truck can get there.
We cut or confirm the mechanical backup key and program the smart fob to the truck over OBD.
We test the fob for door function and push-button start before we finish.

What affects the price of a replacement GX fob?

We don't quote numbers on a web page because the real answer depends on your situation. These are the things that move the cost:

Whether you have an original key to work from or all keys are lost, since lost-key work takes more steps.
Whether you want a new fob or plan to reuse an OEM one, which needs an immobilizer reset.
Whether we come to you or you bring the truck to the storefront.
How many fobs you want programmed in the same visit.
The state of your current fob. Water-damaged or crushed fobs are often not worth saving, and a dead battery alone is a much lighter-cost fix than a full replacement.
The backup blade, if it also needs to be cut.

Locked out or need a locksmith now?

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

Call (213) 577-1366

What we confirm by VIN instead of assuming

Here is the honest part. Parts catalogs disagree about the chip inside this fob. Most describe it as DST80 (sometimes written 'DST+'), but at least one lists DST40. Because of that, we don't treat the chip label as settled for your truck.

Instead we match by the fob's FCC ID and board number, and we confirm against your VIN and the fob itself before we order or program anything. If you've already bought a fob online, send us the label details first so we can tell you whether it fits.

Why call Wilshire Lock & Key for this

We've been in business since 1987, with a storefront in Westwood and mobile vans. You deal with one company, not a dispatch service that passes your call to a stranger, and David oversees the work. Our line is answered 24 hours a day, every day of the year.

Before you hire any locksmith, ask for their BSIS LCO license. California requires locksmith companies to hold one. For more on other models, see our Lexus key pages, the GX overview, or the full car keys section. If you'd rather write first, use our contact page.

Frequently asked questions

My 2010 GX says 'key not detected.' Do I need a new fob?

Not necessarily. A dead fob battery is the most common cause of that message. Try the mechanical backup key for the door first. If a fresh battery doesn't fix it, the fob may be damaged and we can test it.

Can you make a key if I lost every fob for my 2010 GX?

Yes. All-keys-lost is possible on this truck. We program a new smart fob through the OBD port using professional tools to reset the smart-code, and we confirm the right fob by VIN first.

Do I need an original key to get a spare?

Having an original key makes duplication straightforward, and for this setup the original is needed for a standard duplicate. Without one, the job becomes an all-keys-lost job, which is still doable.

Does the 2010 GX have a hidden metal key?

Yes. The smart fob contains a mechanical backup key. It lets you open the door when the fob battery is dead, so it is worth knowing where it is.

Can I use a used Lexus fob I found online?

Sometimes, but a reused OEM fob needs an immobilizer reset before it will work, and it has to be the right fob for your truck. Send us the fob's label and board details before you buy.

Do you confirm the fob type before programming?

Yes. Catalog listings conflict on the chip inside this fob, so we match by FCC ID and board number and confirm by VIN. We don't rely on the chip label alone.

Do you come to me, or do I bring the GX in?

Either works. Our mobile vans can come to you, or you can visit our storefront at 10740 Wilshire Blvd in Westwood. Call (213) 577-1366 to talk through which makes sense.

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.