APP2 (AP PRO2) now joins top-tier tools like Autel and AVDI with its latest BMW BDC2 key programming upgrade — specifically for Add Key functionality.
✅ Why Choose APP2 for BMW BDC2?
- World’s simplest and safest solution for BMW BDC2 key programming
- No need to locate reset points or perform manual soldering
- Fully automated process – backs up coding and completes the job in minutes
- OEM BDC2 key required
- Future updates: Will support All Keys Lost and other advanced features
🛠 Required Authorization
- Function Module: [FN0050] – BMW BDC02 (G-Serial) IMMO Matching
- Full version: License is pre-activated – no need for per-VIN activation like Autel
APP2 BMW G Chassis BDC2 Module Support List:
| Series | Model | Model Years |
| 5 Series | G30 | 2016/11-2020/06 |
| 5 Series | G31 | 2017/03-2020/06 |
| 5 Series | G38 | 2017/03-2020/06 |
| 6 Series | G32 | 2017/07-2020/06 |
| 7 Series | G11/G12 | 2015/07-2019/02 |
| M5 | F90 | 2017/11-2020/06 |
| X3/IX3 | G08 | 2018/05-2021/08 |
| X3 | F97 | 2019/04-2021/07 |
| X3 | G01 | 2017/12-2021/07 |
| X4 | G02 | 2018/04-2021/07 |
| X4 | F98 | 2019/04-2021/07 |
⏱ Process Time
The entire BDC2 IMMO matching takes 4–5 minutes and is simpler than FEM/BDC.
Step-by-Step Guide: Add BMW BDC2 Key Using APP2
- Preparations
Required Tools:
- APPRO2 Host
- USB Cable
- 12V AC/DC Power Supply (≥3A, user-supplied)
- A17-BDC02 Adapter (included with FN0050 module)
Software:
- Ensure APP2 software is updated to the latest version.
- Identify the Vehicle
- Use BMW OBD Auto Recognition [0049] to detect the vehicle model.
- Access via:
Vehicle Model → BMW → BDC02 (G-Serial) [0050] - Confirm no error messages are shown before proceeding.
- Vehicle & Module Preparation
Pre-Service Checks:
- Ensure vehicle is functioning normally.
- Document current condition.
- Retrieving Module Information via BMW OBD Auto Recognition [0049]
- Backing Up Coding Data via OBD.
Locate & Remove BDC02 Module:
- Found on front passenger side (right) – same method as FEM/BDC modules.
Removed BDC02 Module
Fuse Position Diagram
Open the BDC02 Module
Remove the BDC02 Cover
See wiring Instructions when entering FN0050 Function
BDC02 Module Preprocessing Wiring (Soldering)
BDC02 Module Preprocessing Wiring (No Soldering)
- Wiring Setup for Preprocessing
Non-Soldering Method Using A17 Adapter:
Signal Connections:
| Wire Color | Function | Notes |
| Red | +12V power | Controlled by APP2 host; requires ≥3A power input |
| Black | Ground (GND) | Connect to CON7-4 |
| White | RESET | Connect to 5th gold finger on BDC board edge (counted inward) |
| Brown | 25LC256 Pin 2 (Boot Signal) | Connect to PIN2 of 25LC256 chip (SO-8 package) |
⚠️ IMPORTANT:
Never power the brown wire clip while installing!
Short between Pin-2 and Pin-3 will damage the CPU!
- Install Solder-Free Clips
RESET Clip (White Wire):
- Align with the edge notch of the BDC2 mainboard.
- Press firmly until fully seated.
- Incorrect insertion = software error: "White Wire RESET Connection Fault"
EEPROM Clip (Brown Wire):
- Carefully attach to PIN2 of 25LC256 chip.
- Avoid contact with PIN3 to prevent short circuit.
Install the brown wire clip
BDC02 Module Preprocessing – Brown Wire AOC-25LC256-2PIN Connection (Solder-Free Method)
WARNING:
1.POWER OFF before handling the brown AOC clip (25LC256-2PIN).
- NEVER operate this clip with power on! CPU damage will occur!
2.Avoid short-circuiting:
- The clip’s front hook MUST NOT touch EEPROM pin-3.
- Pin-2 and Pin-3 short = CPU destroyed!
Wiring Diagram of BDC02 module with A17 Adapter (No Soldering)
- Preprocessing & Data Backup
6.1 Back Up Coding
- Use APP2 to read and save coding data via OBD.
- Save file for later reference.
6.2 Preprocessing (3–4 minutes)
- Ensure a stable internet connection.
- Do not unplug the power or disconnect during this step.
- Wait for confirmation: "Preprocessing Completed – Key Password Retrieved"
Preprocessing in progress
Preprocessing finished. Save coding data.
Preprocessing completed (Key Password Data Retrieved). Now you can generate dealer key with the data.
- Generate a New Key
- Load the saved key password data.
- Choose a blank key slot (Key ID: FFFFFFFF).
- Generate the new dealer key using the APP2 tool.
✅ Summary of Advantages:
- No soldering required (clip-based wiring)
- Full automation from coding backup to key generation
- Fast and safe — average job takes just a few minutes
- OEM key only — reliable and stable performance
- Full version includes all required licenses — no additional fees
Learn more:
APP2 APPRO2 Software Download and Installation Guide
https://blog.uobdii.com/app2-appro2-software-download-and-installation-guide/
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