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
Robert Murphy –
I ordered the 56044478AE ECM for my 2004 Jeep Wrangler and was very impressed with the service. The unit arrived quickly with free shipping, which was a nice bonus. The ECU came VIN programmed and was truly plug-and-play, so installation was straightforward without needing extra tuning. Their customer support was also excellent, answering all my questions promptly.
Miguel Allen –
Fast shipping and the unit was truly plug-and-play. Saved me a ton compared to dealer prices and installation went without a hitch.
Kyle Webb –
I was a bit nervous ordering an ECM online, but this 56044478AE for my 2004 Jeep Wrangler arrived quickly and was already VIN programmed, which made installation a breeze. The plug-and-play setup saved me a lot of time and hassle compared to other parts I’ve tried in the past. I also appreciated that the seller provided free shipping—definitely a plus when ordering heavy components like this. After swapping it in, my Jeep fired up immediately and runs smoothly without any error codes. It’s clear they know their stuff and take care to deliver quality products that fit perfectly.
Mark Peterson –
I recently purchased the 56044478AE ECM for my 2004 Jeep Wrangler, and I couldn’t be happier with the experience. The unit arrived quickly with free shipping, which was a nice bonus. What really impressed me was the plug-and-play setup—they had it VIN programmed before shipping, so installation was straightforward and hassle-free. I reached out with a couple of questions, and their team responded promptly with clear answers. Overall, the whole process was smooth, and my Jeep is running better than ever.
Chase Miles –
The ECU arrived quickly with free shipping, and it was already VIN programmed—installation was a breeze. Their communication was spot on, answering all my questions right away.
Ian Little –
I ordered the 56044478AE ECM for my 2004 Jeep Wrangler and was really impressed with the fast shipping. The unit arrived fully VIN programmed and was truly plug-and-play, which made installation straightforward and hassle-free. The cost was a fraction of what the dealer quoted, saving me a significant amount. Their communication throughout the process was clear and professional, making this an excellent experience overall.