Component security 7th byte from ECU dump

[makauto]

Hello,

Can anybody (if it is possible) find CS 7th byte from dump?

I don't have original kessy and no original key

Thanks

Maciej

[t77]

Hi write model ,year more info ECU

[makauto]

EDC16CP34
2005 YEAR
3.0 tdi
AUDI A8
4e0910402e

[mbi]

CS: C142343F828400

[yarowsc]

from ECU not read 7th byte - impossible, there are only 6 CS bytes in the ECU
what do you need to do ?

[makauto]

I do not have original kessy and no key (original kessy damaged by water - someone bought new one with numbers taken from original and lost original kessy without saving immo data from eeprom 93c86).
With AVDI I am able to adopt used kessy (siemens) and prepare new key with protag. But I can't find 7th byte. You are right that there is no 7th byte in ECU, but where can I find it
I adopt used kessy and key with CS (6 bytes from ECU and 7th byte = 0x00) VIN and immo ID from ECU. I used pcf 7936 as new key and in measured values in kessy key is OK (variable code, key status, fixed code). I have got 1 fault - steering column lock - signal implausible.
So I don't know if there is problem with immo data stored in ESL - I did lock adoptation with AVDI with success but ESL doesn't unlock.

Thanks for help

[kiszka]

read eeprom esl

[dimon9555]

read eeprom esl
:rofl:
Super tip