Description
2011 Mazda CX-9 3.7L ECM / ECU – VIN Programmed | Plug & Play
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2011 Mazda CX-9 3.7L models.
Each unit is VIN-programmed, updated, and fully tested for a true plug-and-play installation with no dealer visit required.
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:
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Complete communication & CAN-bus verification
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Sensor input/output and signal integrity checks
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Injector & ignition pulse simulation
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Power, ground, and load-circuit analysis
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Flash memory integrity and checksum validation
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Thermal and voltage-stress testing to confirm reliability
This ensures a fully functional, reliable, plug-and-play module you can install with confidence.
Important Note
Some vehicles equipped with IMMO (Immobilizer) or PATS (Passive Anti-Theft System) may require additional key programming after installation. This is normal for models where security data must be synchronized with the vehicle’s body control system.
For a 100% plug-and-play solution with no relearns, no key programming, and no compatibility issues, we recommend our ECU Cloning Service, which transfers all original security, immobilizer, and configuration data directly into the replacement unit.
Contact Us
Email: info@fixecm.com
Phone: Local: 647-247-8555 | Toll-Free: 1-800-915-5566



Aiden Howard –
Super easy swap and it fired right up—saved me a ton of time and hassle. Arrived quickly and exactly as described!
Henry Reynolds –
ECM arrived quickly with free shipping and was perfectly programmed for my 2011 CX-9 – just plugged it in and it worked flawlessly.
Their customer service was top-notch, answering all my questions promptly and ensuring the ECU was VIN programmed exactly as needed.
Great quality and fast turnaround; the plug-and-play setup made installation a breeze with no extra programming required.
Super impressed with the service and communication, they kept me updated every step of the way and shipping was very reasonable.
The VIN programmed ECM fit my CX-9 perfectly, and the shipping was quick and free, making this a hassle-free purchase.