On the drive we have the T5 caravelle & my Polo parked next to eachother. Its only started in the last week or so but when my Dad open the van with the fob, My polo also unlocks! Same with locking, So one key is doing 2 different cars! Is the cold weather having an affect on the signals or something?
I don't know but when the weather was at its coldest around here my clifford was doing very odd things like partially winding down windows on unlock (and windows not going back up). Nice on a -12 morning with an hours drive ahead.