K2TF4-41A-F4AT 433.92MHz Smart Car Key — BYD Qin PLUS / Yuan PLUS / SONG / Dolphin / DM‑i / Tang L (ID46 Chip)

Restore full keyless control with a direct-fit replacement smart key fob designed for BYD vehicles. This K2TF4-41A-F4AT remote fob delivers reliable RF performance and includes an ID46 transponder chip — ideal when your original key is lost, damaged, or worn.

• Compact summary:
  • OEM-style replacement for BYD smart key fob
  • Frequency: 433.92MHz (also compatible with 433.62MHz variants)
  • Built-in ID46 transponder chip
  • Part number: K2TF4-41A-F4AT

Key features

• Precise compatibility: Designed for BYD Qin PLUS, Yuan PLUS, SONG, Dolphin, DM‑i and Tang L models — check your original key part number to confirm fit.
• Reliable RF performance: 433.92MHz / 433.62MHz support for stable lock/unlock range.
• ID46 transponder: Comes with an ID46 chip for vehicle immobilizer compatibility (requires programming).
• Durable build: High-quality buttons and housing for long-term daily use.
• OEM look and feel: Matches original key design and ergonomics for a seamless replacement.

What’s included

• 1 x K2TF4-41A-F4AT smart key fob (with ID46 transponder chip)
• Note: Key blade may be uncut. Battery and professional cutting/programming typically required and are not included.

Installation & programming

• Professional service required: Key cutting and transponder programming must be performed by a qualified locksmith or BYD dealer.
• Proof of ownership may be requested by dealerships for programming.
• Before purchase: Verify your original key’s part number and frequency to ensure compatibility.

Why choose this BYD key replacement

• Fast, cost-effective alternative to full dealer replacement.
• Restores full remote locking and immobilizer functions.
• High-quality materials for long-lasting performance.

Order now to replace your BYD smart key quickly — confirm compatibility with your vehicle vin/model before checkout.

Keywords: BYD smart car key, BYD key fob replacement, K2TF4-41A-F4AT, 433.92MHz key fob, ID46 chip key, Qin PLUS key, Yuan PLUS key, SONG key, Dolphin key, DM‑i key, Tang L key.