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.Built to OEM standards for reliability, calibration accuracy, and long-term performance.
Strict Testing & Quality Assurance
This is not a brand-new unit. It is a rebuilt unit that is inspected, refreshed, and fully tested before shipping.
Testing includes communication, CAN-bus, sensor signal, power circuit, flash memory, and reliability checks.
Important Note
If your vehicle does not have an IMMO or PATS system, this unit will be directly plug&play.
If your vehicle has an IMMO or PATS system, it will require a key relearn after installation. You can visit your local locksmith for help.
We also offer a full cloning service. We transfer all security data to the replacement unit, so it will be a plug&play installation.
For all European cars, Hyundai, and Kia vehicles, we recommend adding our cloning service as a bundle.
For American and Japanese cars, we recommend doing a key relearn on-site.
https://fixecm.com/product/ecm-ecu-pcm-programming-cloning-service/
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.