When I took my '11 35d in for it's first oil change this past Friday, I told my SA that my backup camera had been acting up (cuts in and out and gets all 'squiggly' sometimes, then will be just fine). They had to keep it over the weekend to fix it.

When I picked it up today he said that there had been a service advisory out on the e70 backup cameras (don't know if it was all e70s, just 35ds, '11s, or what, but it applied to my car). Said something about the wiring harness picking up interference and they had to put more shielding around the harness.

You should call your SA to find out if you are affected by the same service advisory.

If you take it in, I advise you to take out your cargo cover. They managed to break mine while they worked on the camera (the RH bracket actually, it won't click in anymore). I'm glad I figured it out before I left the lot so I wouldn't have to go back twice! He has to order the part, sheesh.