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
Blake Brown –
The free shipping was a great bonus, and the ECU arrived perfectly programmed and ready to install—had my Jeep running like new in no time.
Austin Jenkins –
I was pretty nervous about replacing the ECM on my 2004 Jeep Wrangler, but this unit made the whole process much easier. The fact that it came VIN programmed saved me a lot of hassle, and the plug-and-play setup meant I didn’t need any extra tuning. Shipping was surprisingly fast and affordable too, which was a relief. I also appreciated the quick responses when I had questions about installation. Overall, it’s been running smoothly, and I’m really happy with the purchase.
Travis Cook –
I purchased the 56044419AD ECM for my 2004 Jeep Wrangler and was impressed by how easy the plug-and-play setup was. The unit came VIN programmed, which saved me a ton of hassle and time. Shipping was very reasonable and the package arrived well within the expected timeframe. Overall, a smooth and professional experience from start to finish.