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
Isaac Tucker –
Fast shipping and the plug-and-play programming made installing this ECM on my 2004 Jeep Wrangler a breeze. Highly recommend!
Jack Murray –
I was a bit nervous about ordering a replacement ECM for my 2004 Jeep Wrangler, but this company made the process smooth and worry-free. The unit arrived quickly with free shipping, which was a nice surprise. They took care of the VIN programming beforehand, so it was truly plug-and-play when I installed it. The Jeep fired up right away, and everything has been running perfectly ever since. I especially appreciated how they answered my questions promptly and kept me informed throughout the process.
Michael Hudson –
I purchased the 56044433AC ECM for my 2004 Jeep Wrangler and was really impressed with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. They also provided professional VIN programming before shipment, so it was truly plug-and-play when it arrived. The Jeep runs flawlessly now, and their team was quick to answer a few questions I had along the way.