I too have the same problem! One of the many reasons why my 159 is up for sale after only 8 months of ownership! I love the looks but I have never known anything as unreliable as this. It's been in to Bauer Millett in Manchester twice for warranty work after the security system shut down on me, steering lock module and now BCM replaced. Periodically the Hill Holder fails and now the car won't open on these recent frosty mornings. Alfa's really are the donkeys of the car world I'm sorry to say.
The other irritating things I have found are; I get in the car on a cold morning, I put the front and rear de-misters on and the fan speed drops to 1, I try to put it up manually because, let's face it, 1 is NOT going to clear a flamin windscreen!!! Then insult to injury, the fan speed won't increase, not straight away anyway. Why is it that Alfa's have to think about everything…the light sensor, I go under a bridge, the lights come on which is great, I come out the other side and it takes a good few minutes for the 159 to wake up and actually realise that it's come out the otherside. Same with the heating and fan, if I select high fan speed, it takes a handful of time for it to follow my command and put the fan speed up, it's a slug!
I have recently bought a Honda Civic Type S for my wife and that has all the same gubbins as the Alfa and more, the difference being that it does all of the above very well.
Is it really that the Italians have no clue about electronics compared to the Japanese, if that's the case, surely they should buy in japanese electronics!
I would love a solution to the 159 not unlocking on cold mornings because this will really deter any buyer as will all the other stupid little Alfa nonsense, mine is under a Bristol Street Motors warranty which is good but I'm fed up of having to keep taking my car 30 miles to my nearest Alfa dealer to get this sorted, then I have to insure their courtesy car on my insurance - Mito £40 every week!! Jesus Alfa you are riddled with that many problems I can't believe you haven't had a shake up!
Rant over, car still for sale but who will buy this side of xmas!