Description
2004 Jeep Wrangler 4.0L ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2004 Jeep Wrangler 4.0L 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 Hall –
The ECM arrived quickly with free shipping and was already programmed for my 2004 Jeep Wrangler—installation was a breeze. Customer service was really responsive and made the whole process smooth.
Samuel Wilson –
I was impressed with how quickly the ECM arrived after I placed my order, definitely faster than I expected. The unit was truly plug-and-play, making the installation in my 2004 Jeep Wrangler straightforward without any headaches. Compared to dealer prices, this solution saved me a significant amount of money, and the staff kept me updated throughout the entire process. Overall, a professional and hassle-free experience that I would recommend to anyone needing a replacement ECU.
Ethan Little –
Fast shipping and the unit was truly plug-and-play, making installation a breeze. Saved me a ton compared to dealer prices and their communication was spot on.