Description
2004 Toyota Tundra 3.4L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Toyota Tundra 3.4L 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
Jeremy Bates –
I was a bit nervous about ordering an ECU online for my 2004 Toyota Tundra, but this unit exceeded my expectations. It arrived quickly with free shipping, which was a nice bonus. The best part was that it came VIN programmed, making installation straightforward—almost a plug-and-play experience. The truck fired right up and runs like new, no issues at all. I’m very impressed with the quality and the hassle-free process.
Jordan Hudson –
I ordered the 89661-0C400 ECM for my 2004 Toyota Tundra, and I’m really impressed with the quality of the part. The unit arrived quickly with free shipping, which was a nice bonus. They also handled the VIN programming before shipping, so it was truly a plug-and-play experience. Customer support was very responsive when I had a few questions, making the whole process smooth and hassle-free.
Mark Hall –
Fast shipping and the unit was truly plug-and-play; saved me a ton compared to dealer prices. Installation was smooth and the communication was top-notch.
Blake Morris –
Fast shipping and the ECU arrived perfectly programmed for my 2004 Tundra—plug and play, no hassle at all.
Patrick Morris –
I was really impressed with how smooth the whole process was. Ordering the 89661-0C400 ECM for my 2004 Toyota Tundra was straightforward, and the fact that it came VIN programmed saved me a ton of hassle. The free shipping was a nice bonus, especially since I needed it quickly. When I had a couple of questions about installation, their team responded promptly and helped me feel confident before plugging it in. After swapping the unit, my truck ran like new again—no hiccups or error codes. Definitely a reliable place to get ECU replacements.