## **How to install an Android head unit in Lexus RX 4 / RX300 / RX350 / RX450h AL20 (2015-2019)? (Lexus RX IV generation radio replacement / 12.3-inch display upgrade / Dashboard disassembly guide)**

### Symptoms:

When upgrading the factory infotainment system in a [Lexus RX IV](https://smarty-trend.com/en/lexus-rx-200t-300-350-450h-2015-2019-android-head-unit-apple-carplay-12-3-inch) generation (AL20 model series, years 2015–2019, including RX300, RX350, and RX450h) to a modern 12.3-inch Android head unit or large touchscreen multimedia display, installers require a precise, step-by-step procedure to safely remove the center console trim, air vents, factory screen housing, and mouse controller console without damaging delicate clips, route external antennas, and integrate the CAN-bus decoder to retain factory joystick/remote touch controls, steering wheel buttons, and climate control menus.

### Solution:

For a comprehensive step-by-step photo installation guide and wiring diagrams, review the official document folder: [Lexus RX 4 Installation Guide & Manuals](https://drive.google.com/drive/folders/15Pk4QSFmOe3mwCzUeZCVmkXy6N0PgfSB?usp=sharing)

### Keywords:

Lexus RX 2015-2019 head unit installation, Lexus RX300 RX350 radio replacement, 12.3 inch display upgrade Lexus RX, dashboard disassembly AL20, CAN-bus decoder installation, SMARTY Trend manual, **STSDGEL-3605**