Description
2004 Lexus IS300 3.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Lexus IS300 3.0L models.
Each unit is VIN-programmed, updated, and fully tested for a true plug-and-play installation with our cloning service.
Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
Every ECU is inspected, refreshed, and verified through advanced diagnostic tools. Testing includes:
Complete communication & CAN-bus verification
Sensor input/output and signal integrity checks
Injector & ignition pulse simulation
Power, ground, and load-circuit analysis
Flash memory integrity and checksum validation
Thermal and voltage-stress testing to confirm reliability
Important Note
Some vehicles with IMMO or PATS require key programming after installation. This is normal.
For a 100% plug-and-play solution, we recommend using our full cloning service. We transfer all security data to the replacement unit.
A prepaid shipping label will be emailed to you. Allow you to mail in your original computer to us for full cloning.
If cloning is not selected, the ECU will be VIN programmed, and a key relearn will be required after installation.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Luis Johnson –
The ECM arrived quickly with free shipping and was perfectly programmed for my Lexus, making installation a breeze. Communication was clear and prompt throughout the process.
Harvey Hamilton –
I purchased the 2004 Lexus IS300 ECM and was really impressed with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. What stood out most was the professional programming service—they had it perfectly matched to my VIN, so it was literally plug-and-play. The quality of the repair feels solid, and my car runs like new now.