PatriceO

Hard to check, but do you know if they ran the automatic coding of all modules after coding the XLF (point 11.5.1 and 11.5.2 in the instruction manual)?

But at first I would recheck the correct vacuum lines, as you mentioned.

rth.photo

I can only assume they did, the mentioned that "vehicle handover" was performed, but not sure what that means. The shop is reputable and they handle far more complicated things on a daily basis, but I'm running out of potential fixes at this point.

Might try and find someone near me with PIWIS.