Description
2004 Infiniti FX35 3.5L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Infiniti FX35 3.5L models.
Each unit is VIN-programmed, updated, and fully tested.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566





Nicholas Howard –
I was really impressed with how quickly this 2004 Infiniti FX35 ECM arrived after ordering. The unit was truly plug-and-play, making installation straightforward without any headaches. Compared to the dealer’s price, this option saved me a significant amount of money, and the communication from the seller was clear and helpful throughout the process. Definitely a smooth experience from start to finish.
Adrian Hayes –
I purchased the programmed ECM for my 2004 Infiniti FX35 and was really impressed with the entire process. The unit arrived quickly with free shipping, and it was ready to install right out of the box thanks to their professional VIN programming service. The quality of the ECM is excellent, and my engine runs smoothly now without any issues. Customer service was also very responsive when I had a couple of questions before ordering.
Ryan Poole –
Fast shipping and the unit was completely plug-and-play, saving me a ton compared to dealer prices. Installation was straightforward and the team’s communication was excellent.
Mason Russell –
The ECM arrived quickly with free shipping, and the plug-and-play setup was seamless—highly recommend for anyone needing a fast, reliable solution.