Launch X431 PAD VII Back up 2016 VW Polo MQB IMMO Data

How to read, write and back up VW Polo MQB MEC35XX immo data so that you can add key or program all keys lost.

Tools used:

Launch X431 PAD VII (Or Launch X431 IMMO Plus/IMMO Elite)

X-prog3

MCU3 adapter

Procedure:

Go to System and Function->Special Function-> The anti-theft function-> 4th Generation Immobilizer system-> Anti-theft module replacement->MQB instrument

Check wiring diagram

Select processor, here it is Renesas A2C81589700

Launch indicate to use lift pin method. Read and connect MQB cluster with X-prog3 and MCU3 adapter carefully.

Read chip ID

Read Full backup data
Read Flash
Write eeprom.

Save full backup data.

Then Decrypt Flash & EEPROM, upload immo data just saved to get CS code.

Then generate dealer key and learn key with X-prog3.