"We can make a new key out of thin air. (Okay, not thin air, but we definitely don't need your old one.)"

2014-2016 Hyundai Elantra Smart Key Programming Service

95440-3X520 FCC ID: SY5MDFNA433 Frequency: 433 MHz

$250.0030 min

2035 Victory blvd. Staten Island, NY 10314

Please enter 17-Digit VIN (Vehicle Identification Number)

🔑 2014 – 2016 HYUNDAI ELANTRA SMART KEY (FACELIFT / 433 MHz)

Vehicle Platform: Hyundai Elantra "MD / UD" (Facelift Models) Key Type: Smart Key / Proximity Remote Part Number: 95440-3X520 FCC ID: SY5MDFNA433 Frequency: 433 MHz

✨ SERVICE OVERVIEW

Professional in-store programming for the Facelift Generation Smart Keys used on the 2014–2016 Hyundai Elantra.

This listing covers the specific 433 MHz remote used on the later years of this body style. While it looks identical to the earlier 2011–2013 key, the internal frequency is different and they are not interchangeable.

Smart Key Fob: Hyundai Part (Ref: 95440-3X520).
Button Configuration: 4-Button (Lock, Unlock, Trunk, Panic).
Chip Type: ID46 (PCF7952).
Feature: Push-Button Start / Proximity Entry.

⚠️ CRITICAL "FREQUENCY CHANGE" WARNING

315 MHz (Early) vs. 433 MHz (Late): The Elantra switched frequencies midway through this generation.

2011 – 2013: Uses the 315 MHz key (SY5HMFNA04 / Part 3X200).
2014 – 2016: Uses THIS 433 MHz key (SY5MDFNA433 / Part 3X520).

The Trap: The shells look exactly the same. You MUST check the FCC ID or the Year. If you try to program this key to a 2012 car, it will fail.
2013 Split: Some late-production 2013 models might use this newer key. Always check the original remote if possible.