Our XC90 B5D goes into hybernation mode and if i spend too long hitching the caravan up then like you i have to open a rear door and the IDC (BPW version of ATC) springs into life.
Ive also been caught out on site when ive turned off the engine on site and then start up to move and the IDC is self testing again and for a split second yor trying to drag a braked caravan.
So when the trailer lights self test and the warning about bliss being switched off and the IDC self testing buzzing away at the rear have all competed doing thier thing you can actually get on with the holiday.
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