Hi,

 

my 2020 škoda octavia IV I bought preowned needs a new battery, the current one (EBF+) is degreaded which also shows up by some systems giving errors on car boot up, but they go aways after like 15 seconds, I think because of the voltage drop.

 

The local dealer here in Slovenia wants 300€ for the repair (battery included) and they can't even tell me if they will put in EBF+ or AGM battery (wtf?). I bought a AGM battery for 160€ and a chinese VCDS clone for 40€ and some OBD connector with aligator clips, that is supposed to help with keeping the car modules powered so they don't lose power. I have discovered today, while trying to change the coding before swapping the batteries, that I can't change the coding, and everything points out to me needing SDF unlocking to change it. I found some random site which I do not know if it is trustworthy, who supposedly gives you the correct SDF string to paste in VCDS to unlock the modules and modify them. I can give the address of the site if this is allowed and you want.

But what I am wondering is should I even do it? I think I have the technical knowledge to do it but most importantly I am wondering if anyone has done it before since it is quite complicated.

 

Best regards

To clarify, the website wants me to buy credits, and the minimum is 30€ which should be enough for 2 unlocks (1 unlock is supposed to last 90 minutes before the module locks itself back), but I also read that OBD11 has integrated SFD unlock if you buy the 12 month PRO VAG subscription, but that's much more expensive.

Solution: