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
Frank Baker –
I purchased the R6044433AD ECM for my 2004 Jeep Wrangler, and I’m very impressed with the quality and performance. The unit arrived quickly with free shipping, which was a big plus. What really stood out was the plug-and-play setup—they had it VIN programmed and ready to go, so installation was hassle-free. Communication was also top-notch; they answered all my questions promptly and kept me informed throughout the process.
Elliot Nichols –
I was really impressed with how smooth everything went ordering the ECM for my 2004 Jeep Wrangler. The seller provided professional VIN programming, so it was truly a plug-and-play setup once it arrived—no extra trips to a mechanic needed. Shipping was surprisingly fast and very reasonable, which was a big plus. They also kept me in the loop with updates, so I always knew what was happening with my order. The Jeep runs perfectly now, and I’m grateful for such a hassle-free experience.
Shane Marshall –
The ECU arrived quickly with free shipping and was perfectly programmed to my Jeep’s VIN—plug and play, no hassle at all.
Cole Cook –
I was a bit nervous about ordering an ECM online for my 2004 Jeep Wrangler, but this was a great experience from start to finish. The unit arrived quickly and was already VIN programmed, which saved me a ton of hassle. Their team kept me in the loop throughout the process and answered all my questions promptly, making me feel confident about the purchase. Installation was straightforward since it was truly plug-and-play, and my Jeep has been running perfectly ever since. Definitely recommend if you want a hassle-free solution and reliable service.