Description
2021 Hyundai Elantra 2.0L AT gas ECM / ECU – VIN Programmed | Updated
This Engine Control Module (ECM / ECU) is a genuine OEM replacement for all 2021 Hyundai Elantra 2.0L 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
Dean King –
The ECU arrived quickly with free shipping and worked perfectly right out of the box—very happy with the smooth plug-and-play setup.
Great communication throughout the process and the programming service was spot on; my 2021 Elantra runs like new again.
Super fast turnaround and the programming was done professionally, making installation a breeze with no issues at all.
Marcus Burton –
I ordered the 2021 Hyundai Elantra 2.0L AT ECM and was really impressed with how smoothly everything went. The unit arrived quickly with free shipping, which was a nice bonus. The programming was done professionally, and it was truly a plug-and-play experience—I had it installed and running without a hitch. Their team also responded promptly when I had questions, making the entire process stress-free.
Miguel Webb –
Fast shipping and a plug-and-play unit made installation a breeze—this saved me a ton versus dealer prices. Great communication and professional service throughout.
Caleb Taylor –
I needed a replacement ECM for my 2021 Hyundai Elantra 2.0L, and this unit arrived exactly as described, already VIN programmed and ready to install. The plug-and-play setup made the swap simple, and I was back on the road in no time. Shipping was surprisingly fast and reasonably priced, which was a big plus since I was worried about extra costs. The quality feels solid, and the engine runs smoothly now without any error codes. Overall, a hassle-free experience from start to finish.