We have pointed out where to get sync data for VAG MQB all keys lost before. Check this post. Now many resources don’t have access to MQB sync data.
The immo and sync data services are slowly shutting shop as VAG cracks down. Now they are asking to give them the ECU CS. That means you cannot get sync data directly.
Launch X431 has a built-in MQB sync data calculator. So does Thinkcar or the similar brand EAATA 360PRO. There are even PC-based calculators out there once you have the CS from all the modules.
To calculate sync data, we need CS from each cluster, ecu, gearbox (if automatic), kessy (if keyless), ELV.
Instrument panel CS code 16 bytes
ECU 16 bytes CS code
TCU 16 bytes CS code
ELV 16 bytes CS (if keyless)
If CAR is without keyless wich means no ELV on car you can read ECU TCU AND DASH and Make key.
If Keylessgo it have ESL wich means there is no tool to read ESL and you will not be able to make dealer key and to learn to the car.
Launch X431 IMMO Plus/IMMO Elite can calculate sync from CS of the various modules has been possible for quite some time.
How to Calculate MQB Sync Data with Launch X431 Built-in Calculator?
It’s also a lot of bloody work, getting at the TCU in the car is an absolute pain, and removing it even worse because you’ve got to drain the transmission to do it. Also they haven’t addressed the issue of keyless vehicles where the ELV is also immo related and must be read, and no tool supports recovering the CS of the ELV.
We have been told by unreliable sources that if you have all the other modules CS it is possible to recover the ELV by calculation but we don’t know how long that takes having never seen the procedure.
