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 for a true plug-and-play installation with our cloning service.
Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
Every ECU is inspected, refreshed, and verified through advanced diagnostic tools. Testing includes:
Complete communication & CAN-bus verification
Sensor input/output and signal integrity checks
Injector & ignition pulse simulation
Power, ground, and load-circuit analysis
Flash memory integrity and checksum validation
Thermal and voltage-stress testing to confirm reliability
Important Note
Some vehicles with IMMO or PATS require key programming after installation. This is normal.
For a 100% plug-and-play solution, we recommend using our full cloning service. We transfer all security data to the replacement unit.
A prepaid shipping label will be emailed to you. Allow you to mail in your original computer to us for full cloning.
If cloning is not selected, the ECU will be VIN programmed, and a key relearn will be required after installation.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566
Harvey Reed –
The 56044419AA ECM I ordered for my 2004 Jeep Wrangler arrived quickly with free shipping, which was a nice bonus. The unit came VIN programmed and ready to install, making the swap hassle-free. The quality of the ECM is top-notch, and the communication from the seller was prompt when I had a few questions. Overall, a smooth experience from start to finish.
Edward Walker –
I was a bit nervous ordering an ECM online for my 2004 Jeep Wrangler, but this unit arrived quickly and was exactly as described. What really impressed me was that it came VIN programmed and ready to go, so installation was a breeze—no need to hunt down separate programming services. The shipping was free and arrived well-packaged, which made the whole process smooth from start to finish. I also appreciated how the seller kept me updated on my order status, answering my questions promptly. Overall, this was a solid purchase that got my Jeep running like new again.
Logan Tucker –
Great quality ECM for my 2004 Jeep Wrangler, arrived quickly with free shipping and was already VIN programmed for a hassle-free install. Customer service was prompt and helpful when I had questions.
Cole Nichols –
I was a bit nervous about ordering an ECM online, but this 56044419AA unit for my 2004 Jeep Wrangler arrived quickly and arrived programmed to my VIN, which saved me a huge hassle. The plug-and-play setup was exactly as described, and I had no issues getting my engine running smoothly again. The team was very responsive to my questions and kept me informed every step of the way. Shipping was free, which was an unexpected bonus. Overall, it was a seamless experience, and the Jeep feels like new again.