Problem:
After using Yanhua Mini ACDP Module 34 to read Dflash from Seat Leon MQB RH850 R7F701402 (which it did successfully) dashboard now completely dead, managed to also read pflash but think it’s corrupted as it gives checksum error or something, can it be repaired?
Solution:
For mileage correction:
Do Full back up data, then send the whole VW data folder to Yanhua engineer.
Take the 7F701402 instrument cluster as an example
Menu path:
VW MQB IMMO (ODO)->MQB48/49 ODO- Method 2 (R7F7014xx 5A/5C/5D)-> R7F701402-A (5A/5C)-> Special function-> Full backup data.
Full back up data, send VW folder, also send the mileage that you want to modify, so ACDP engineer would directly adjust it to your desired mileage.
For key programming:
If you can’t read original dash – donor dash possible adapt only Online Geko.
Donor cluster and write dflash from old one onto it which allows to program the key, car starts and runs ok and ODIS used to configure the rest of dashboard.