Audi a3 2006 how to get the 7th bytes in all key lost?
You have 2 options
1 – perform all keys lost and xhorse change by itself the 7th byte
But you change original data.
A vvdi key tool plus does not need the 7 byte but when you do all the keys lost you will no longer be able to make dealer key anymore in that car because the 7 byte invented the tool read immo and from there create a key of dealer of which already brings the car much easier and faster
2- go to key learning inmo status
Check item dealer key you put the 7 from hex 00 to FF
( 256 possibilities take one hour )
When you see yes dealer you got it and var get original data
That if only have xhorse device.
Another way is to use autel with apb112 to sniff the 7 in one minute.
I use Autel IM508/IM608 and apb112 for this car. Read 7th byte from ignition switch.
Read ecu get 6th byte cs and sniff switch with apb112 and you get 7th byte.
Check instruction
