My E53 is 4.4i, production date 2000-09-07.
I'm almost sure that this connector is not for air suspension cause I've got NIVO suspension and it's fully working so nothing is missing
Unfortunately there is no any sticker.
I'm asking about this connector because I'm retrofitting bluetooth and I'm facing no call sound issue. I've tracked sound signal (NF) wire from ULF module and it leads to this plug. I'm wondering if there is something missing there and that's why I'm asking
Is it possible that webasto remote receiver is triggered by phone signal from ULF module?