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BYD Atto 3 / Dolphin OEM 4 Button Smart Remote Key 434MHz ID4A L14979538 (2023-2026)

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Arrives in 2-5 business days
Product Code: KS02688

IMPORTANT: This remote/key is supplied unprogrammed and will need to be programmed to your vehicle by a qualified auto locksmith or specialist. Please check compatibility before ordering, including part number, frequency, blade/profile and images where available. If you choose key cutting, the cut is made to the information supplied and cannot be refunded if incorrect details are provided.

  • Genuine OEM BYD Atto 3 / Dolphin 4-button smart (keyless) remote - replacement for a lost, damaged or faulty key
  • 4-button keyless (Lock / Unlock / Boot / Remote Start), 434MHz, ID4A (NCF29AxE) HITAG AES chip
  • Emergency key blade NOT included - TOY48 (Silca) blade available separately. CR2032 battery
  • Fits BYD Atto 3 (2023-2026) and BYD Dolphin (2025)
  • OE part L14979538 / 14979538-00. FCC / module refs K2TF4-41A, F4AT002778ED, PAH-3791200B-L1
  • Note: the original may read as 4A Hitag AES and this replacement may show as ID46 NCF29AxE - this is correct and programs successfully
  • Professional programming required (available in-store at Keystation, Essex). 12 month warranty. Non-returnable once cut or programmed

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Manufacturer UNKNOWN
OEM / Aftermarket OEM
Blade ID TOY48
Buttons 4 BUTTONS
Remote Style SMART
Frequency 434 MHZ
Chip Type ID4A
Battery Type CR2032
Vehicle Type Car
Available Cut From Code? Yes
Available Cut From Image? Yes
Make Model Year
BYD
Atto 3 2023-2026
BYD
Dolphin 2025

OEM smart key

BYD Atto 3 / Dolphin OEM 4 Button Smart Remote Key - 434MHz ID4A (2023-2026)

Genuine OEM BYD Atto 3 / Dolphin 4-button smart (keyless) remote. Emergency key blade purchased separately.

Replace a lost, damaged or faulty BYD Atto 3 or Dolphin smart key with this genuine OEM 4-button proximity remote (Lock, Unlock, Boot and Remote Start). It uses the ID4A (NCF29AxE) HITAG AES transponder at 434MHz. The emergency key blade is not included - a TOY48 (Silca) blade is available separately. Powered by a CR2032 battery. Keys are supplied unprogrammed and need professional programming, which Keystation can carry out in-store in Essex.

Suits the BYD Atto 3 (2023-2026) and BYD Dolphin (2025). Always compare the part number, frequency and keyless configuration against your existing key before ordering.

Fitment checks

Match the part number, frequency, button layout and blade to your existing key. Reference: OE L14979538 / 14979538-00, blade TOY48.

Chip note

The original may read as 4A Hitag AES and this replacement may show as ID46 NCF29AxE. This is correct and the replacement programs successfully.

Programming required

Smart keys need professional programming - this usually cannot be done remotely. Keystation offers in-store programming in Essex.

Product specification

Buttons4 Button (Lock / Unlock / Boot / Remote Start)
Frequency434MHz
ChipID4A (NCF29AxE HITAG AES)
Emergency bladeTOY48 (Silca) - not included, available separately
BatteryCR2032
TypeGenuine OEM smart remote
Part codesL14979538 / 14979538-00 / K2TF4-41A
FitsBYD Atto 3 (2023-2026), BYD Dolphin (2025)
Important: Check the part number and configuration before ordering. Keys are supplied unprogrammed; once cut or programmed this item is non-returnable.

Key Features

  • ✓ Genuine OEM BYD Atto 3 / Dolphin 4-button smart (keyless) remote - replacement for a lost, damaged or faulty key
  • ✓ 4-button keyless (Lock / Unlock / Boot / Remote Start), 434MHz, ID4A (NCF29AxE) HITAG AES chip
  • ✓ Emergency key blade NOT included - TOY48 (Silca) blade available separately. CR2032 battery
  • ✓ Fits BYD Atto 3 (2023-2026) and BYD Dolphin (2025)
  • ✓ OE part L14979538 / 14979538-00. FCC / module refs K2TF4-41A, F4AT002778ED, PAH-3791200B-L1
  • ✓ Note: the original may read as 4A Hitag AES and this replacement may show as ID46 NCF29AxE - this is correct and programs successfully
  • ✓ Professional programming required (available in-store at Keystation, Essex). 12 month warranty. Non-returnable once cut or programmed

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