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2021 Hyundai Elantra Supported Services

2021 Hyundai Elantra

ADAS, Module Repair & Programming

Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements.

  • Platform CN7 (7th Gen) - Hyundai Elantra
  • CAN Architecture Hyundai CAN FD (Controller Area Network Flexible Data-rate); OBD2 DLC ISO 15765-4 CAN
  • Security Hyundai IMMO4 (AES encryption); no OBD pin extraction; BCM handles IMMO; AKL requires PIN via HMT or GDS + dealer authorization
OVERVIEW

Expert ADAS calibration, module programming, and diagnostic recovery for the 2021 Hyundai Elantra. On this vehicle we cover documented systems include Forward Camera (Monocular), Forward Radar (77GHz), and Blind Spot Monitor Sensor - Left (BSM), this CN7 (7th Gen) - Hyundai Elantra platform vehicle, Hyundai IMMO4 (AES encryption) immobilizer support, Hyundai BlueLink infotainment programming. Mobile across the DFW Metroplex, mail-in nationwide for module-bench work.

Platform
CN7 (7th Gen) - Hyundai Elantra
Production
2007-present
Trim Levels
Multiple trim levels available. ADAS feature availability varies by trim and options package. Contact us for specific trim calibration requirements.
Drivetrain
FWD
Engine
-
CAN Speed
Hyundai CAN FD (Controller Area Network Flexible Data-rate); OBD2 DLC ISO 15765-4 CAN
YEAR-SPECIFIC NOTES

VIN / Build Split

VIN pos 4-8 identifies model/trim/engine/restraint. Hyundai WMI: 5NP, KMH, 5NM. Position 4-5 = model. Position 10 = model year code.

Infotainment

Hyundai BlueLink

SERVICE SNAPSHOT

Exact-year service summary for 2021 Hyundai Elantra

ADAS coverage

This 2021 Hyundai Elantra page documents 6 ADAS systems, including Forward Camera (Monocular), Forward Radar (77GHz), Blind Spot Monitor Sensor - Left (BSM), and Blind Spot Monitor Sensor - Right (BSM).

View ADAS data

Calibration triggers

Documented calibration triggers include Windshield Replacement, Forward Camera Replacement, Front Bumper / Radar Repair or Replacement, and Rear Bumper / BSM Sensor Replacement. Use the ADAS tab for the full trigger list.

View triggers

Programmable modules

This page indexes 39 programmable module records across SRS, ECU, BCM, TCU/TCM, ABS, and IPC coverage.

View modules

Gateway and security

This page includes 7 gateway, immobilizer, or key-security records for this 2021 Hyundai Elantra.

View security

Core Auto Logic capability

Core Auto Logic supports exact-year diagnostics, ADAS calibration, module programming, and security-access planning for the 2021 Hyundai Elantra using the documented systems and module data on this page.

Choose a section
EXACT-YEAR DIFFERENTIATORS

What changes on this exact year

Feature availability

Hyundai SmartSense: Forward Collision-Avoidance Assist (SE+) - Available; Immobilizer: Hyundai IMMO4 (AES encryption) - Standard; Platform: CN7 (7th Gen) - Confirmed

Driver-assist suite

Hyundai SmartSense: Forward Collision-Avoidance Assist (SE+); Lane Keeping Assist System, Lane Following Assist, Smart Cruise Control with Stop & Go, Blind-Spot Collision Warning, Rear Cross-Traffic Collision Avoidance, Driver Attention Warning (SEL+)

VIN and build split

VIN pos 4-8 identifies model/trim/engine/restraint. Hyundai WMI: 5NP, KMH, 5NM. Position 4-5 = model. Position 10 = model year code.

Infotainment context

Hyundai BlueLink; 8" touchscreen standard; 10.25" digital cluster on Limited/N-Line; Hyundai Bluelink connected services; wired CarPlay/Android Auto standard; wireless on select trims

Network and access

CAN: Hyundai CAN FD (Controller Area Network Flexible Data-rate); OBD2 DLC ISO 15765-4 CAN

Choose a section to view data

Feature availability 3

Hyundai SmartSense: Forward Collision-Avoidance Assist (SE+)

Available

Calibration required after windshield replacement, camera/radar service, or structural repair affecting sensor alignment.

Immobilizer: Hyundai IMMO4 (AES encryption)

Standard

Key programming requires manufacturer-level tool access.

Platform: CN7 (7th Gen)

Confirmed

Verify platform code matches when cross-referencing part numbers across model years.

WHAT WE RESOLVE

Common issues on this vehicle

Common Hyundai Elantra issues we resolve on this platform: Forward Camera (Monocular), Forward Radar (77GHz), Blind Spot Monitor Sensor - Left (BSM), and Blind Spot Monitor Sensor - Right (BSM) recalibration after windshield/bumper/suspension/CCM service. Module programming for replacement ECU/PCM, BCM, TCU, or accessory modules - CN7 (7th Gen) - Hyundai Elantra platform uses Hyundai CAN FD (Controller Area Network Flexible Data-rate); OBD2 DLC ISO 15765-4 CAN. Key programming and immobilizer faults - Hyundai IMMO4 (AES encryption) immobilizer; all-keys-lost supported.

OPENPILOT / COMMA.AI

Openpilot Compatibility

Not Supported

Officially supported (openpilot master)

Package
SCC + LFA/LKAS
Hardware
Comma 3X + Hyundai B/G/K harness
Harness
Hyundai B/G/K Harness

2021-23 K harness. Hybrid also supported. 2024+ not yet in tree.

Documented for the 7th Gen CN7 - includes this 2021 model year. Open the full coverage on the generation guide.

FREQUENTLY ASKED QUESTIONS

FAQ

How much does ADAS calibration cost for a 2021 Hyundai Elantra?

ADAS calibration pricing for a 2021 Hyundai Elantra depends on which of its 6 documented systems need work after a repair. This vehicle is documented with Forward Camera (Monocular), Forward Radar (77GHz), Blind Spot Monitor Sensor - Left (BSM), Blind Spot Monitor Sensor - Right (BSM), and Lane Keep Assist / Lane Departure Warning (LKA/LDW). We provide a fixed quote after confirming the operations performed - send the VIN, the repair scope (windshield R&R, bumper work, alignment, collision), and any DTCs and we return a number within 4 hours.

Can you reset the airbag light on a 2021 Hyundai Elantra?

Yes. The 2021 Hyundai Elantra uses a factory SRS control module that we support. We read and clear stored crash data, then restore the module to factory status so the airbag warning light goes out and the system returns to full operation. Reference part number on this vehicle: 80310-AB000. Bench-only or in-vehicle - both paths are supported. Send the part number and a description of what triggered the light, and we will provide a quote and ETA.

What is needed after replacing the windshield on a 2021 Hyundai Elantra?

After windshield replacement on a 2021 Hyundai Elantra, Forward Camera (Monocular), Forward Radar (77GHz), and Lane Keep Assist / Lane Departure Warning (LKA/LDW) rely on the forward-facing camera and require recalibration before the systems return to operation. We perform the calibration on-site (DFW Metroplex) with OE target fixtures or via mail-in for the front camera/radar module.

How long does a 2021 Hyundai Elantra module service take?

Most 2021 Hyundai Elantra jobs complete same-day once the vehicle or module arrives. This vehicle has roughly 26 programmable modules documented in our database (6 ECU, 3 BCM, 2 TCU, 4 ABS, plus IPC/SAS/gateway/accessory). Module-bench work (ECU clones, BCM reprograms, SRS resets) ships back inside 1-3 business days including return shipping. ADAS calibration is on-site for DFW or mail-in for the front module.

Do you cover the 2021 Hyundai Elantra on-site, or is this mail-in only?

Both. We run a mobile unit across the DFW Metroplex for on-vehicle work (ADAS calibration, key programming, IMMO pairing, post-repair recoding) and a mail-in bench for module-only jobs (ECU cloning, BCM repair, SRS reset, TCU clone). Quote the work and we will tell you which path is right for the 2021 Hyundai Elantra.

What kind of warranty do you offer on 2021 Hyundai Elantra programming?

Every programming, cloning, and calibration job on the 2021 Hyundai Elantra is backed by a workmanship warranty covering the scope of work we performed: 1-year unlimited on all flashes, clones, and ADAS calibrations. If a module we programmed or a calibration we performed fails to function as expected, return it and we restore it at no charge. The warranty covers our work; it does not cover unrelated mechanical or electrical failure of the module itself.

Can you program a 2021 Hyundai Elantra with no working keys (all-keys-lost)?

Yes - all-keys-lost is supported on the 2021 Hyundai Elantra. Immobilizer generation on this platform: Hyundai IMMO4 (AES encryption). Adding a key (with a working key already in hand) is also supported - typically faster and less expensive than an all-keys-lost reset. Submit the VIN and we will confirm the procedure and quote before scheduling.

Which modules on a 2021 Hyundai Elantra can you actually service?

We program, clone, repair, or replace the full programmable-module stack on a 2021 Hyundai Elantra. For this vehicle our database documents:

  • 6 engine control (ECU/PCM)
  • 2 transmission control (TCU/TCM)
  • 3 body control (BCM and related)
  • 4 ABS / brake control (EBCM)
  • 4 immobilizer / security
  • 3 key & fob
  • 2 instrument cluster (IPC)
  • 1 steering angle sensor (SAS)
  • 6 ADAS module

Infotainment on this platform: Hyundai BlueLink. Send the VIN and the operations performed and we will confirm support and pricing.

Different trim or build?

Send your VIN and we'll confirm exact module support and pricing for your specific vehicle within 4 hours.

Hit a security wall? We've got the keys.

1-year unlimited warranty on every flash and calibration.

(945) 382-4065 Get a Quote

Shared module fitment

Vehicles sharing modules with the 2021 Hyundai Elantra

These vehicles use one or more of the same replacement modules indexed for this vehicle.