The vehicle key reference for working locksmiths.

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Keydiy · Diagnostic device

KD-X4

4 make/model/year rows confirmed across 3 makes. Adapter and token requirements shown per row.

Compatibility / Keydiy KD-X4

Audi1
BMW1
Volkswagen2

Audi

1 vehicle

A3
2020–2024 · europe · 8Y (MQB Evo)
+ FGB08 or FGB25-5 PCB interface board for original key reading; KD ZB-series 5C smart key blank or original OEM key

BMW

1 vehicle

X3
2017–2024 · europe · G01 (3rd generation X3, CLAR platform)
+ KD FGB23 blank remote. Key wiring connection to original key PCB required (wiring diagram provided by tool). Requires 5000 KD-Coins (~USD 150) for BDC2/BDC3 function activation, then approximately 200 KD-Coins (~USD 4) per key generation.~200 KD-Coins (~£3–4) per key generation after initial activation.

Volkswagen

2 vehicles

Golf
2020–2024 · europe · MK8 (CD platform / MQB Evo)
+ DB25 cable. MQB license activation required (same license as MQB48).
ID.4
2021–2024 · europe · E21 (MEB platform)
+ 5C/5D circuit interface board for key PCB connection. KD ZB remote blank required. MQB license activation required.

Keydiy KD-X4 — vehicle coverage | Keysolved