Problem:
Yanhua ACDP2 Module 33 appears key learning error or fails to learn key for VW MQB48.
Solution:
You can update the PCF Key Adapter to solve this problem.
Preparation:
✔ Yanhua Mini ACDP/ACDP2 (bound to APP)
✔ PCF Key Adapter
✔ ACDP standard power adapter (12V, ≥2.5A)
✔ Stable internet connection
Detailed update guide:
Open Mini ACDP APP
Verify ACDP device is bound to APP
Navigate to: Special Function → Adapter Upgrade
Tap Help (under PCF-KEY Upgrade)
Connect PCF-Key Adapter and Mini ACDP-1/ACDP-2 correctly
Power adapter (12V/2.5A)
Select “PCF-KEY Upgrade”
Load hardware program
Confirm successful connection
Check the current and latest version
Confirm to update adapter
Wait about 2 to 5 minutes for upgrade completion
Remember the operation log path
Done!
Tech Support:
Whatsapp: +8618054815707
Email: Sales@ACDP2.EU
