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  4. Lexus LS500h 2018-2020 Smart Key 4-button 315MHz - 8990H-50020 - Genuine · OEM · New
Lexus LS500h 2018-2020 Smart Key 4-button 315MHz - 8990H-50020 - Genuine · OEM · New

Lexus LS500h 2018-2020 Smart Key 4-button 315MHz - 8990H-50020 - Genuine · OEM · New

Genuine new

SKU: B00651

$175.56
 625.00

Fits Lexus LS 2018–2020

  • 315 MHzFrequency
  • 4-buttonButtons

Ships the next working day if you order within 35 hours 43 minutes

Order via WhatsApp

Specifications

Genuine Lexus 4-button smart key for Lexus LS500h 2018-2020, 315 MHz, ID8A chip, blade not included. Part 8990H-50020.

Easy Return:
Make free local returns for defects on qualifying purchases
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Genuine · OEM · New

Lexus LS500h 2018-2020 Smart Key 4-Button

4-button · 315 MHz · ID8A · FCC ID HYQ14FBF · Part 8990H-50020

4
Buttons
315 MHz
Frequency
ID8A
Transponder chip
CR2032
Battery

⭐ Built for the Lexus LS500h 2018-2020, this 4-button smart key is a new genuine factory Lexus unit of part number 8990H-50020, running at 315 MHz with a DST-AES, ID 8A (Texas Instruments 128-bit) transponder. Its buttons cover lock, unlock, trunk, panic. It is supplied as the key only, without the emergency blade, and is registered over OBD with a diagnostic tool. The same radio approval is fitted to 8990H-50010, 8990H-33020, 8990H-06010, so the part number, not the FCC ID, decides the order.

⚙️ Key features

4-button layout

Lock, unlock, trunk, panic.

315 MHz with ID8A

315 MHz transmitter paired with a DST-AES, ID 8A (Texas Instruments 128-bit) transponder for proximity entry and push-button start.

FCC ID is shared

Its radio approval is also used on 8990H-50010, 8990H-33020; the part number 8990H-50020 is the reference.

CR2032 coin cell

Runs on a user-replaceable CR2032 battery. The emergency blade is sourced separately.

💎 Benefits

Same layout as the original

Customers get back the 4 functions they use every day, with nothing missing on handover.

Clear part reference

Part number 8990H-50020 on the listing makes it quick to match against the customer's key.

Factory electronics

A genuine Lexus unit, so the electronics match the original key exactly.

Customer confidence

A factory key reassures customers who want the same part the car was built with.

👥 Who it's for

Automotive locksmiths

Add-key and all-keys-lost jobs on the Lexus LS500h with OBD key programmers.

Key shops and counter trade

Stock for walk-in spare key requests on the LS500h.

Dealers and garages

Replacement keys for used LS500h stock and service customers.

🚗 Compatible vehicles

LEXUSLS500h2018-2020hybrid (GVF50 / GVF55), North American 315 MHz
Before ordering, match part number 8990H-50020 or FCC ID HYQ14FBF printed on the original key.

📦 What's included

✅ IN THE BOX

✔ 1 × genuine new 4-button smart key with DST-AES, ID 8A (Texas Instruments 128-bit) transponder

❌ NOT INCLUDED

✘ Emergency insert blade (LXP90 profile) - source separately and cut to the vehicle's key code

✘ Programming to the vehicle - done over OBD with a diagnostic tool

📋 Specifications

📡 REMOTE
FCC ID
HYQ14FBF
Frequency
315 MHz
Buttons
4 (incl. panic)
Key type
Smart proximity key, push-button start
IC
1551A-14FBF
🔐 TRANSPONDER & BLADE
Transponder chip
DST-AES, ID 8A (Texas Instruments 128-bit)
Emergency key blade
Not included
Blade profile
LXP90
📦 PHYSICAL & POWER
Battery
CR2032
Weight
60 g
Condition
Genuine · OEM · New
🔢 PART NUMBERS
8990H-50020 part number

🛠️ Programming instructions

🔌OBD PROGRAMMING - DIAGNOSTIC TOOL REQUIRED

This proximity smart key cannot be learned by hand. It is registered to the car through the OBD-II port with a diagnostic tool.

Compatible tools: Toyota Techstream at the dealer, or locksmith tools whose software lists this model, such as Lonsdor K518.
Add key (spare): connect over OBD with a working key present and run the tool's smart key registration through the smart key ECU.
All keys lost: the route depends on the chip generation; newer platforms may need the smart key ECU read on the bench or an emulator before a key can be registered.
Blade: cut the LXP90 emergency blade, sourced separately, to the vehicle's key code and test it in the driver's door.
Check coverage first: support depends on the tool's software version and the exact model year. Verify the Lexus LS500h 2018-2020 smart key is in the tool's supported list before the job.

Frequently Asked Questions

Common questions about this product

The 8990H-50020 smart key fits the Lexus LS500h 2018-2020 with the 4-button layout, North America (USA / Canada) version. Match the part number printed on the back of the original key, and the button layout, before ordering. A key with a different part number may not register.
No. The FCC ID HYQ14FBF is a radio approval that Lexus also uses on 8990H-50010, 8990H-33020, 8990H-06010. Those keys can fit other cars or have other buttons, so the part number 8990H-50020 on the original key is the deciding reference.
The 8990H-50020 smart key transmits at 315 MHz and carries a DST-AES, ID 8A (Texas Instruments 128-bit) transponder inside the housing. Match the frequency on the original key too. A key on another frequency will not talk to the car.
The Lexus LS500h 2018-2020 smart key is programmed over the OBD-II port with the dealer system or a locksmith key programmer that covers this model. All keys lost takes extra steps that depend on the chip generation, so check the tool's coverage first.
No. The 8990H-50020 smart key is supplied as the key only, without its emergency insert blade; it takes an LXP90 profile blade. Source the blade separately and cut it to the vehicle's key code, by code or by decoding the door lock.
Yes. This listing is a genuine factory Lexus 8990H-50020 smart key, supplied new and unprogrammed, without the emergency blade. It is programmed to the car over OBD like any new key. Match the part number on the original first.
The 8990H-50020 smart key runs on a CR2032 coin cell battery, fitted inside the housing. Replace it when the range drops or the dashboard shows a low key battery warning. If the battery is flat, hold the key against the start button to start the car.
Related lookups:FCC HYQ14FBFLexus LS