Description
2021 Land Rover Discovery 3.0L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2021 Land Rover Discovery 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




Andrew Hayes –
I’m really impressed with this ECM for my 2021 Land Rover Discovery. The shipping arrived quickly, and the unit was truly plug-and-play, making installation straightforward even for me. Compared to dealer prices, this saved me a ton of money, and the seller was great at keeping me informed throughout the process. Overall, a professional and hassle-free experience.
Matthew Brooks –
Fast shipping and the ECU arrived perfectly programmed for my 2021 Land Rover Discovery—plug-and-play made the installation a breeze.
Elliot Parker –
I purchased the 2021 Land Rover Discovery 3.0L ECM, and I’m really impressed with the quality and how smoothly it arrived thanks to the free shipping. The VIN programming was spot on, so installation was straightforward and plug-and-play as promised. The seller kept me informed throughout the process, which made me feel confident about my purchase. Overall, a fantastic experience from start to finish.
Carlos King –
The plug-and-play ECM arrived quickly and worked perfectly, saving me a ton compared to dealer prices. Communication was clear and installation was a breeze.