Description
Lexus Proximity Key 2020-2022
This smart proximity remote is designed to work exactly like your original Lexus key for updated 2020-2022 models. It is a precise technical match for push-to-start key systems, featuring the Board ID 3950 architecture, IC Number 1551A-14FBB, and Texas ID H-8A transponder security. Whether you’ve lost your only set ("All Keys Lost") or just want to add a spare key for backup, this proximity key restores every factory feature, including keyless entry and power hatch control. Professional automotive locksmith programming is required to sync this remote to your vehicle.
The Technical Details
| FCC ID | HYQ14FLB |
| IC Number | 1551A-14FBB |
| Circuit Board ID | Board 3950 |
| Chip & Frequency | Texas ID H-8A / 315 MHz |
| Battery Type | CR2032 (Included & Installed) |
| Emergency Key | Uncut LXP90 Blade Included |
| Fits These Models |
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Things to Know Before Buying
How do I confirm my Lexus uses "Board 3950"?
The most reliable way is to open your current keyless entry remote case and check the number printed on the internal circuit board. It must show "3950". This board is used in the updated systems from 2020 onwards and is not interchangeable with earlier versions.
Can I program this myself?
No. Due to the advanced encryption in the FLB series, this smart proximity remote requires specialized diagnostic tools. A professional automotive locksmith has the software needed to sync the new push-to-start key to your immobilizer safely.
What arrives in the box?
You'll get the replacement key with a fresh CR2032 battery already inside, plus the uncut LXP90 emergency blade. You just need to take it to a locksmith to have it laser-cut and programmed.
⚠️ Check Your Board First
Lexus remotes are strictly version-specific. This proximity key is for Board ID 3950 and FCC ID: HYQ14FLB only. Verify your original board marking before ordering to ensure a successful programming experience.