$3,500 for a new tranny?! It's better than having to foot the entire bill. I'd be curious if the solenoid change would have fixed your problem. Either way you are getting a new tranny and that is sweet.
2004 545iA, Titansilber Metallic/Black Dakota, Sport, Premium & Cold Weather Packages, Navigation, Premium Sound, Logic 7, HL Washers, Active Steering/Suspension, PDC, Adaptive Bi-Xenon,Voice Command, Beltronics STiR +, 58% Full Tint, Smoked Side Markers, 19" Hyper Silver Avant Garde M359/Michelin PSS, M5 Trunk Finisher & iDrive Controller, Dinan Performance Mods: High Flow Intake & Throttle Body, S3 Engine Software, S1 Suspension, CF Front Strut Brace and High Flow Exhaust