Xhorse tutorial: how to read VAG MQB48 NEC35XX locked RH850 D70F3426 processor dashboard with Xhorse vvdi key tool plus and RH850 cable.
Xhorse XDNPRBGL MQB-RH850/V850 Adapter is designed to read VW MQB48 dashboard data without cutting/ lifting any pins.
Support List:
MQB-RH850 (R7F)
MQB 34XX
IMMO4 JCI 34XX
Here take an example of RH850 D70F3426. D70F3426 cluster is more complex than the regular RH850 cluster.
You will need key tool plus, RH850 adapter and eeprom adapter
Procedure:
1.Read dashboard data
The function requires network connection.
Go to Immo Programming>>VW>>Select by Type>>MQB Immo System>>Dashboard-MQB48 (VDO/JCI-NEC35XX Locked)
Then select Read Immo data>>Read NEC35XX Chip>>Soldering>>R7F703426
Check wiring diagram
Follow wiring diagram to remove 4 capacitors
solder RH850 adapter with cluster, then connect RH850 cable with key tool plus
Read and save IMMO Data
Step 2: Read EEPROM Data
Remove RH850 cable from cluster
Restore capacitors
Remove 95128wt eeprom chip from cluster
Solder eeprom chip to eeprom adapter
connect eeprom adapter with vvdi key tool plus via DB15 cable
Read and save eeprom 95128
Step 3: Get immo data
Select Get Immo data
Upload 95128 eeprom to calculate immo data online
Then save new immo data
Now you can generate dealer key and learn key with the calculated immo data.
Done.