Lexus Smart Key HYQ14AAB 89904-50380 – ID74 314MHz IS250 GS350 CT200H
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📋 Part No: 89904-50380 | FCC ID: HYQ14AAB | IC: 1551A-14AAB | Board No: 3370
ID74 TMS37126 314.3MHz ASK TOY48 Blade 4 Buttons HYQ14AAB Board 3370 Battery Not Included
Aftermarket Lexus smart key (Part No. 89904-50380 / HYQ14AAB) with ID74-WD03 TMS37126/4D 80-bit chip (P1:98), 314.3MHz ASK frequency, 4 buttons and TOY48 blade. CR1632 battery required separately. Suits 11 Lexus models across CT, ES, GS, HS, IS, LS and LX series. Diagnostic programming by a qualified locksmith or mechanic is required.
🔋 Battery Not Included: This smart key requires a CR1632 battery. Please purchase one separately before use. Battery access requires a tool.
⚠️ Diagnostic Programming Required: This Lexus smart key must be programmed using a diagnostic scan tool by a qualified automotive locksmith or mechanic. It cannot be self-programmed.
Key Features
Complete Smart Key
Full smart key with all electronics inside — not a shell only
314.3MHz ASK
314.3MHz ASK — matches Lexus HYQ14AAB factory specification
ID74 80-bit Chip
TMS37126/4D 80-bit chip (P1:98) for immobiliser compatibility
TOY48 Blade
TOY48 emergency blade — check your current key blade before ordering
4 Buttons
4-button layout — lock, unlock, boot and panic
11 Lexus Models
Suits CT200H, ES350, GS series, HS250H, IS series, LS460 and LX570
Vehicle Compatibility
| Vehicle | Year Range | FCC ID |
|---|---|---|
| Lexus CT200H | 2011 | HYQ14AAB |
| Lexus ES350 | 2010 – 2012 | HYQ14AAB |
| Lexus GS350 | 2009 – 2012 | HYQ14AAB |
| Lexus GS450H | 2009 – 2012 | HYQ14AAB |
| Lexus GS460 | 2009 – 2011 | HYQ14AAB |
| Lexus HS250H | 2010 – 2012 | HYQ14AAB |
| Lexus IS250 | 2009 – 2011 | HYQ14AAB |
| Lexus IS350 | 2009 – 2011 | HYQ14AAB |
| Lexus IS-F | 2009 – 2011 | HYQ14AAB |
| Lexus LS460 | 2009 | HYQ14AAB |
| Lexus LX570 | 2010 – 2011 | HYQ14AAB |
Programming Requirements
🔧 Diagnostic Programming Only — This Lexus smart key uses the ID74-WD03 TMS37126 80-bit chip and requires programming via a diagnostic scan tool by a qualified automotive locksmith or mechanic. Manual programming is not supported. Please confirm your locksmith has Lexus/Toyota compatible diagnostic equipment before purchasing.
Technical Specifications
| Manufacturer Compatibility | Lexus (Aftermarket) |
| Part No. | 89904-50380 |
| FCC ID | HYQ14AAB |
| IC | 1551A-14AAB |
| Board No. | 3370 |
| Type | Aftermarket Compatible Smart Key |
| Chip | ID74-WD03, TMS37126/4D 80BIT, P1:98 |
| Frequency | 314.3MHz ASK |
| Buttons | 4 |
| Blade | TOY48 |
| Battery Type | CR1632 (not included) |
| Battery Access | Tool Required |
| Programming Method | Diagnostic Only |
| Xhorse Compatible | No |
Before You Buy – Important Information
- This is a complete smart key with all electronics included — not a shell only
- Keys are not supplied with logos
- CR1632 battery is NOT included — purchase separately before use
- This key is suitable if your current key looks identical to this listing and uses a TOY48 blade
- Verify your vehicle's FCC ID is HYQ14AAB before ordering — check the label on your current key
- Programming must be performed diagnostically by a qualified automotive locksmith or mechanic
- This key cannot be self-programmed
Disclaimer: This product is an aftermarket compatible replacement key, distributed as a substitute for the original manufacturer's product. It is not produced by, authorised, endorsed, or approved by Lexus or Toyota. The word "Lexus" and all model names are used solely to indicate vehicle compatibility.
