Description
2021 Audi A6 3.0L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2021 Audi A6 3.0L AT gas 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
Matthew Jenkins –
I purchased the 2021 Audi A6 3.0L AT ECM from this seller and was really impressed with how smooth the whole process was. The ECU came VIN programmed and ready to install, which saved me so much time and hassle. Shipping was surprisingly quick and free, which was a nice bonus. I had a couple of questions before ordering, and their customer service was very responsive and helpful. Once installed, the car ran perfectly with no hiccups at all. Highly recommend if you need a reliable, plug-and-play solution.
Harvey Jenkins –
I purchased the 2021 Audi A6 3.0L AT ECM and was impressed by how quickly it arrived, especially with free shipping included. The unit came fully VIN programmed, and installation was straightforward thanks to their plug-and-play setup. Their team was very responsive, answering my questions promptly and making the entire process hassle-free. Overall, the quality of the ECM feels excellent and the car runs smoothly now.
Miguel Smith –
The ECU arrived quickly with free shipping and was perfectly programmed for my 2021 Audi A6—plug-and-play made installation a breeze.