Lexus RX key replacement in Los Angeles

Lexus RX keys by year

Year	Key type	Chip	Push-to-start
2026	Smart / proximity key	varies — ask us	Yes
2025	Smart / proximity key	varies — ask us	Yes
2024	Smart / proximity key	DST-AES ('B9' smart key, 8A family)	Yes
2023	Smart / proximity key	DST-AES ('B9' smart key, 8A family)	Yes
2022	Smart / proximity key	8A (128-bit DST-AES)	Yes
2021	Smart / proximity key	8A (128-bit DST-AES)	Yes
2020	Smart / proximity key	8A (128-bit DST-AES)	Yes
2019	Smart / proximity key	8A (128-bit DST-AES)	Yes
2018	Smart / proximity key	8A (128-bit DST-AES)	Yes
2017	Smart / proximity key	8A (128-bit DST-AES)	Yes
2016	Smart / proximity key	8A (128-bit DST-AES)	Yes
2015	Smart / proximity key	DST80 ('DST+' smart) (unconfirmed)	Yes
2014	Smart / proximity key	DST80 ('DST+' smart) (unconfirmed)	Yes
2013	Smart / proximity key	DST80 ('DST+' smart) (unconfirmed)	Yes
2012	Smart / proximity key	DST80 ('DST+' smart) (unconfirmed)	Yes
2011	Smart / proximity key	DST80 ('DST+' smart) (unconfirmed)	Yes
2010	Smart / proximity key	DST80 ('DST+' smart) (unconfirmed)	Yes
2009	Remote-head key	4D-68	No
2008	Remote-head key	4D-68	No
2007	Remote-head key	4D-68	No
2006	Remote-head key	4D-68	No
2005	Remote-head key	4D-68	No
2004	Remote-head key	4D-68	No
2003	Transponder chip key	4C	No
2002	Transponder chip key	4C	No
2001	Transponder chip key	4C	No
2000	Transponder chip key	4C	No

Which Lexus RX key do you actually have?

The Lexus RX has gone through five key eras since 2000, and the key changed with almost every one. A 2002 RX300 uses a metal laser-cut blade with a transponder chip. A 2012 RX uses a push-button smart fob. A 2024 RX uses a newer smart key whose registration involves server-based authentication. Those are three different jobs with three different sets of tools, so 'I need a key for my RX' is never a complete request.

We start with the model year and then ask for the VIN. The year tells us the era. The VIN settles the edge cases: the RX400h hybrid and certain option packages in the 2000s, the conflicting chip listings on the 2010–2015 fob, and the newest model years where tool coverage is still catching up. For the brand-wide picture, see our Lexus key page, and for other makes the car key service hub. The year-by-year table on this page lists the key type, chip family and programming method for every model year.

What does a 2000–2003 RX300 need?

The first-generation RX300 (XU10; our data covers 2000 through 2003) uses a Texas 4C transponder chip in a laser-cut TOY48 short blade. The remote is a separate fob, so the key and the remote are two pieces. It is worth working out which piece you actually need before ordering anything.

These cars are old enough that wear is the main story. Laser-cut blades chip and round off until they stop turning the lock. Ignition wafers wear on high-mileage RX300s, which can feel like a bad key when the lock is the real problem. And a plain hardware-store copy may slide in and even turn, but it has no chip, so it will not start the car.

Programming is done through the OBD port, and all-keys-lost is possible. The catch is on the earliest cars: all-keys-lost can call for an immobilizer ECU reset rather than a quick OBD add, so we confirm by year and VIN before we tell you which route your car needs. A duplicate made from a working original key is the simpler path.

What do 2004–2009 RX330, RX350 and RX400h owners need?

The XU30 generation covers the RX330 (2004–2006), the RX350 (2007–2009) and the RX400h hybrid (2006–2008). The standard key on the gas models is a 4D-68 remote-head key, HYQ12BBT: blade, chip and lock buttons in a single head. It is OBD-programmable, including all-keys-lost.

The exception is the hybrid and some option packages, which used an early smart-key system instead. We do not guess on those. If you drive an RX400h or a loaded 2006–2009 model and are not sure what your key is, give us the VIN and we confirm per vehicle before ordering anything.

This era's typical failures are mechanical and cosmetic: cracked remote-head shells, worn buttons, dead remote batteries, and worn ignition wafers on high-mileage cars. If your key still starts the car and only the buttons or case have given out, a full replacement may not be the right fix, and we will look before recommending one.

Locked out or need a locksmith now?

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

Call (213) 577-1366

Why do 2010–2015 RX fobs get matched by board number?

Starting with the AL10 generation in 2010, smart key and push-button start are standard. The fob is the HYQ14ACX, built on the GNE board 271451-5290.

Here is where we are honest about what the catalogs say. Listings disagree on the chip inside this fob: most describe it as 'DST+' or DST80, but at least one lists DST40. We treat the chip as unconfirmed. So we match a replacement by the fob's FCC ID and board number instead of the chip label, and we confirm the exact setup by VIN. Ordering from a listing headline alone can leave you with a fob that looks right but will not register.

Programming is over OBD. All-keys-lost is handled with an OBD smart-code reset using professional tools. A reused OEM fob, such as one pulled from another car, needs an immobilizer reset before it will work on yours, so a secondhand fob is not plug-and-play.

How do the 2016–2022 smart keys differ?

The AL20 generation moved to 128-bit 8A (DST-AES) smart keys. Through 2020 the fob is the HYQ14FBB (G board 0010). For 2021 and 2022 Lexus changed to the HYQ14FLB fob, which carries the same Texas H-8A chip. Same chip family, different fob, so we match the exact fob to the year rather than assuming one fits all.

For 2016 through 2019, adding a key over OBD is routine, and all-keys-lost is handled with a DST-AES emulator and professional tools. From 2020, things tighten. In the US, all-keys-lost generally requires Toyota/Lexus server codes, through locksmith-credentialed NASTF VSP access or tool-specific authorization. Adding a key when you still have a working fob is less restricted. The 2021–2022 cars generally need server-code authorization for all-keys-lost as well.

The practical takeaway for a 2020–2022 owner: if you have one working fob, make the spare now. Waiting until the last fob dies moves you from the simpler job to the one that needs authorization.

What about the 2023–2026 RX?

The AL30 generation uses the 'B9' DST-AES smart key, and key registration involves server-based authentication. That changes who can do the work. All-keys-lost is possible with server-connected specialist equipment (Abrites TN016 is one example) or at the dealer, and not every shop covers these cars yet. We check the VIN and current tool coverage before committing, and if the dealer is the right route for your RX, we tell you that on the phone.

For 2025 and 2026 our data is thin, and we say so. We have no verified chip family or programming method for those years, aftermarket catalogs are still sparse, and Toyota and Lexus have begun moving some lines to a newer key type. We do not quote those cars blind. We confirm the key system and tool coverage by VIN first, then give you a straight answer on whether we can do it.

If you own one of these and still hold a working key, getting a second one made while the original works is the lighter-cost, lower-risk move.

Locked out or need a locksmith now?

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

Call (213) 577-1366

Duplicate or all keys lost: how does each era compare?

Every year in our data needs an original key present for a duplicate, and all-keys-lost is possible for each verified year. What changes is the route and the restrictions.

OBD is the programming method for every year we have verified, but OBD access alone does not mean a job is easy or open to every shop. From 2020 on, authorization is what separates the jobs, and on the newest cars the dealer may be the only option for a particular all-keys-lost situation. We tell you where your car falls before any work begins.

2000–2003: duplicate from a working key over OBD; all-keys-lost is possible, sometimes through an immobilizer ECU reset on the earliest cars.
2004–2009: OBD, including all-keys-lost on the standard remote-head key; hybrid and option-package cars are confirmed per vehicle.
2010–2015: OBD smart-code reset for all-keys-lost with professional tools; reused OEM fobs need an immobilizer reset.
2016–2019: add-a-key over OBD is routine; all-keys-lost uses a DST-AES emulator.
2020–2022: add-a-key with a working fob is less restricted; all-keys-lost generally needs server-code authorization.
2023–2024: server-authenticated registration; all-keys-lost through specialist server-connected equipment or the dealer.
2025–2026: not confirmed in our data; we verify by VIN before quoting.

What affects the cost of a Lexus RX key?

We do not give a number until we know the year and VIN, because RX keys range from a chipped metal blade to a server-authenticated smart key. These are the things that move the cost.

When you call, give us the year, the VIN, how many working keys you have, and where the car is. With that we can explain exactly what your quote is made of.

The era. A bladed or remote-head key is a lighter job than a smart fob, and lost-fob replacement is costlier than bladed keys.
Whether you have a working key. Adding a key with an original in hand is usually the more economical route compared with all-keys-lost.
Authorization. On 2020 and later cars, server codes or tool-specific authorization add steps to all-keys-lost work.
The exact fob. HYQ12BBT, HYQ14ACX, HYQ14FBB and HYQ14FLB are different parts, and we match by FCC ID and board number.
A reused OEM fob. It needs an immobilizer reset before it works, which adds labor.
Tool coverage on new cars. 2023 and newer need specialist equipment, and 2025–2026 coverage is still being confirmed.
Where the job happens. A mobile van coming to your car is a different job from you visiting our Westwood storefront, and we tell you which makes sense.

Locked out or need a locksmith now?

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

Call (213) 577-1366

What commonly goes wrong with RX keys?

The data points to a handful of repeat problems, and they line up by era.

Every year in our data also carries a mechanical backup key, so a dead fob battery does not have to mean being shut out of the door. We look at the battery first when a smart fob fails, because a fob that has gone quiet is not always a fob that needs replacing.

2000–2009: worn ignition wafers on high-mileage cars. The lock wears, not just the key.
2000–2003: worn or chipped laser-cut blades that stop turning the lock, and non-transponder hardware-store copies that will not start the car.
2004–2009: cracked remote-head shells, worn buttons and remote battery failure.
2010 onward: a dead smart-fob battery, where the car reports 'key not detected'.
2010 onward: water-damaged or crushed fobs.
Smart-fob years: lost-fob replacement is costlier than bladed keys, which is why a spare is worth making early.

How do we handle an RX key job, and when is the dealer the better call?

Wilshire Lock & Key has been in business since 1987. We run a storefront at 10740 Wilshire Blvd in Westwood plus mobile service vans, serve 140 cities across Los Angeles and Ventura counties, and answer the phone, (213) 577-1366, around the clock every day of the year. You deal with one company, with no dispatch middleman, and David, the owner and lead technician, oversees the work.

The dealer is a reasonable call for a 2025–2026 RX where coverage is unconfirmed, and for a 2023 or newer all-keys-lost job if we cannot confirm tool coverage by VIN. For many of the older eras, the work happens at your car, which matters when the car will not move.

One more thing worth knowing: California requires locksmith companies to hold a BSIS LCO license, and you should ask any locksmith for it before work starts, us included. If you have your VIN ready, contact us or start from the Wilshire Lock & Key home page.

You call and give us the model year, the VIN, and how many working keys you have.
We place the car in its era and tell you the likely route: duplicate, add-a-key or all-keys-lost, and whether it is OBD, an immobilizer reset, or authorization-dependent.
For unverified or conflicting setups (the 2010–2015 chip labels, 2025–2026 cars, hybrids and option packages), we confirm the exact system by VIN before ordering parts.
We match the key or fob by model and FCC ID or board number, not just by year.
We program it, then test starting, locking, unlocking and the backup blade.
If the dealer is the right route, we say so rather than start something we cannot finish.

Frequently asked questions

Can you make a Lexus RX key if I have lost every key?

For the years we have verified, all-keys-lost is possible, but the route differs by era. 2020 and later generally need server-code authorization, 2023 and newer need server-connected specialist equipment or the dealer, and 2025–2026 we confirm by VIN. Call with the VIN and we will tell you straight.

Will a hardware-store copy start my RX300?

It may cut and even turn the lock, but a non-transponder copy has no chip, so the 2000–2003 RX300 will not start with it. The car needs a transponder key programmed to it.

What fob does a 2012 Lexus RX use?

The 2010–2015 RX uses the HYQ14ACX smart fob on GNE board 271451-5290. Catalogs disagree about the chip inside (DST80 versus DST40), so we match by FCC ID and board number and confirm the exact setup by VIN.

Is the 2021 RX fob the same as the 2019 fob?

No. The 2016–2020 RX uses the HYQ14FBB, while 2021–2022 uses the HYQ14FLB. Both carry the same Texas 8A-family chip, but they are different fobs, so we match to the exact one for your year.

Can you help with a 2025 or 2026 RX?

We can start by confirming. Our information on those years is unverified: catalogs are thin and Lexus has begun moving some lines to a newer key type. Give us the VIN, and we confirm the key system and tool coverage, then tell you honestly whether we or the dealer is the right call.

Is it more economical to make a spare now?

Usually, yes. Adding a key while you still have a working one is generally the lighter route, especially from 2020 onward, when all-keys-lost adds authorization steps. Cost depends on the year, the fob and your situation, so we quote once we know the car.

Does my RX350 or RX400h use the same key?

The standard RX350 uses the 4D-68 remote-head key, HYQ12BBT. The RX400h hybrid and some option packages carry an early smart-key system instead, so we confirm per vehicle by VIN before ordering.

How do I know a locksmith is legitimate?

California requires locksmith companies to hold a BSIS LCO license. Ask any locksmith for it, and ask where they are located. Our storefront is at 10740 Wilshire Blvd in Westwood, and you can reach us at (213) 577-1366.

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.