Description
2005 Toyota Tundra 4.7L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2005 Toyota Tundra 4.7L 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



Frank Lewis –
I was a bit nervous about ordering an ECU online, but this 89661-0C721 unit for my 2005 Toyota Tundra arrived quickly and was exactly as described. What impressed me most was the professional VIN programming they provided, so it was truly a plug-and-play replacement. The shipping was very reasonable too, which was a relief given how expensive some parts can be. Their team kept me informed throughout the process, answering my questions promptly. Once installed, my truck started right up with no issues—definitely a smooth experience from start to finish.
Mason Phillips –
I ordered the 89661-0C721 ECM for my 2005 Toyota Tundra and was really impressed with how smoothly everything went. The unit came VIN programmed and ready to install, which saved me a lot of hassle. Shipping was surprisingly fast and affordable, and the seller kept me informed throughout the entire process. The engine now runs perfectly, and I would definitely buy from them again.
Grant Hall –
Fast shipping and the ECU arrived perfectly programmed for my 2005 Tundra—plug-and-play made installation a breeze!
Chase Murphy –
I ordered the 89661-0C721 ECM for my 2005 Tundra and was really impressed with how quickly it arrived. The unit was completely plug-and-play, making installation straightforward without any headaches. Their customer service was professional and kept me updated throughout the process. Overall, this saved me a significant amount compared to dealer pricing, and my truck runs perfectly now.
Matthew Kelly –
The unit arrived quickly and was completely plug-and-play, saving me a bundle versus the dealer; installation was smooth and the customer support was top-notch. Fast shipping and a great value all around.