Hyundai / Kia 4-Button Smart Key – SY5HMFNA04 – 315 MHz – ID46

Hyundai / Kia 4-Button Smart Key – SY5HMFNA04 – 315 MHz – ID46

Aftermarket replacement 4-button smart key for select Hyundai and Kia vehicles equipped with the SY5HMFNA04 proximity and push-to-start system.

This smart key operates at 315 MHz and features an ID46 / PCF7952-compatible transponder system. The supplied Palmetto configuration features Lock, Unlock, Rear Hatch, and Panic buttons.

SY5HMFNA04 was used across multiple Hyundai and Kia vehicle platforms and OEM part-number configurations. Depending on the original application, certain factory remotes may use a Trunk icon instead of the Rear Hatch icon found on this aftermarket remote.

Always verify the original FCC ID, IC number, frequency, OEM part number, vehicle application, and required rear-access function before ordering or programming.

Key Features

• FCC ID: SY5HMFNA04
• IC: 267AL-HMFNA04
• Frequency: 315 MHz
• Transponder Chip: ID46
• Chip Configuration: PCF7952-compatible aftermarket
• Transponder Technology: HITAG2-compatible
• Button Count: 4
• Button Functions: Lock / Unlock / Rear Hatch / Panic
• Key Type: Smart Key
• Proximity / Keyless Go: Yes
• Push-to-Start Application: Yes
• Battery: CR2032
• Emergency Key Profile: HY22
• Emergency Key Included: Yes
• Manufacturer Type: Aftermarket
• Condition: New

Product Information

• Compatible Make: Hyundai / Kia
• Application Type: Smart Remote / Proximity / Immobilizer
• Vehicle System: Keyless Go / Push-to-Start
• Transponder: ID46 / PCF7952-compatible aftermarket
• Transponder Technology: HITAG2-compatible
• Power Source: Battery Powered
• Battery Size: CR2032
• Emergency Key Profile: HY22
• Emergency Key Included: Yes
• Programming: Dealer / Locksmith Programming Required
• Remote Features: Keyless Entry, Proximity Entry, Power Lock, Rear Hatch, Panic Mode

OEM / Replacement Cross-References

• 95440-3N250
• 95440-1U000
• 95440-2T100
• 95440-3Q000
• 95440-3M220
• 95440-3M230
• 95440-2V100
• 95440-2S300

Vehicle Compatibility

Hyundai

• Azera: 2011–2015
• Equus: 2011–2013
• Elantra Sedan: 2012–2013
• Elantra GT: 2013–2015
• Genesis Sedan: 2009–2014
• Sonata: 2011–2015
• Sonata Hybrid: 2015
• Tucson: 2012–2014
• Veloster: 2012–2016

Kia

• Borrego: 2010–2012
• Forte: 2011–2013
• Optima: 2009–2013
• Rio: 2011–2014
• Sorento: 2011–2013

Hyundai/Kia family for Azera, Equus, Elantra Sedan, Genesis Sedan, Sonata, Sonata Hybrid, Borrego, Forte, Optima, Rio and Sorento: certain Hyundai/Kia vehicles can have two possible remotes and should be verified by part number/VIN. 

Button Configuration Note

This aftermarket remote has Lock / Unlock / Rear Hatch / Panic buttons. Some SY5HMFNA04 applications, particularly sedans, use a Trunk icon instead of Rear Hatch. Verify the original FCC ID, OEM part number, and required rear-access function before ordering. Button artwork may differ from the original remote.

Emergency Key Compatibility

Emergency insert configurations can vary within the SY5HMFNA04 family. Verify that the supplied HY22 blade profile and insert configuration match the original key before cutting or installation.

Programming & Compatibility

This smart key requires professional programming to the vehicle's immobilizer and proximity system before use.

The ID46 / PCF7952-compatible transponder and remote functions must be registered using compatible Hyundai / Kia locksmith or dealer programming equipment.

Do not expect a standard customer onboard programming procedure for this application.

Because Hyundai and Kia used multiple smart-key configurations across overlapping model years, do not determine compatibility solely by vehicle year or physical appearance. Verify FCC ID, IC, frequency, original part number, and vehicle configuration before programming.