Keymall Lexus Smart Key Fob Replacement HYQ14ACX 4-Button for RX350/RX450/GX460/LX570 — Uncut Blade, Includes Battery

Keymall Smart Key Fob Transmitter is a complete aftermarket 4-button replacement remote (HYQ14ACX / P/N 89904-48191, GNE/5290 board) compatible with select Lexus models from 2008–2016.

This Keymall remote is sold as a ready-to-program replacement head: it includes the circuit board, battery, chip, and an uncut key blade so a locksmith can cut and program the transponder to your vehicle. It matches the HYQ14ACX FCC ID and GNE (5290) board number and operates at 314.3 MHz. Because vehicle key systems vary, confirm the board stamping, FCC ID, part numbers, and button layout on your original remote before ordering.

How do I verify this remote will fit my Lexus?

Compatibility depends on internal board markings, FCC ID, and the physical key shape. Compare those details to your existing remote and the vehicle list below before purchasing.

• Check for "GNE" stamped on the circuit board or the number "5290".
• Confirm the FCC ID HYQ14ACX and part number 89904-48191 on your original remote.
• Make sure your original has four buttons (Lock, Unlock, Trunk, Panic) and the same key blade style.

What vehicles and model years are supported by this Keymall fob?

This aftermarket replacement is designed to match the listed Lexus models that used the HYQ14ACX configuration. Model years vary by model — always cross-check with your original remote.

• Lexus RX350: 2009–2015
• Lexus RX450 / RX450h: 2010–2015
• Lexus GX460: 2010–2016
• Lexus LX570: 2008, 2010–2013
• Lexus CT200h: 2011, 2013–2016

How is this remote delivered and what must I do after receiving it?

The package contains one complete key fob with an uncut key blank. It will require cutting and professional programming before it can start working with your car.

• Included: full remote assembly with CR2032 battery and key blank.
• Take the key blank to a qualified locksmith for cutting and programming.
• Confirm remote programming compatibility with your vehicle before instructing the locksmith to cut the key.

What should I expect from this aftermarket Keymall part versus an OEM key?

This Keymall remote is an aftermarket replacement without brand logo or OEM part engraving; it replicates function and internals but is sold at a lower price. Dealers may refuse to program non-OEM remotes, so use an independent locksmith experienced with aftermarket remotes.

• Aftermarket unit: identical electronics (HYQ14ACX / 314.3 MHz) but no Lexus emblem or back-side part number.
• Full functionality once properly programmed and cut (Lock, Unlock, Trunk, Panic).
• Recommended: verify board/part numbers and confirm programming before key cutting.

Who is this for: Drivers of compatible Lexus models (RX350/RX450/RX450h/GX460/LX570/CT200h) who need a cost-effective replacement remote that matches the HYQ14ACX/GNE (5290) configuration and are willing to have the uncut blade cut and the fob professionally programmed. This option suits DIY-savvy owners, independent locksmiths, and anyone seeking a functional aftermarket alternative to an OEM key fob.