UPDATE: Key fob issue resolved! (for the time being)

For now the key fob issue is resolved. It was not the key fob circuit board, or the battery, or the DWS, or the FZV antenna, or a fuse, or the door actuactor, or the GM3 module. It was the door tumbler/lock! Removed the door lock because it was broken last week, already have the part ordered direct from Germany. In the mean time put the old broken door lock back in but in the neutral position and all the doors unlock. Key fob unlock and lock buttons work as well now. What a relief it's not the door actuator, GM3 module or FZV antenna. PITA to diagnose and resolve.

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2004 BMW M3 Individual
2009 BMW E70 X5 35d
2011 BMW E70 X5 35d - Totaled
2009 BMW M3 E90 - SOLD
2006 E53 X5 4.8iS - SOLD
2002 E46 M3 Convertible - SOLD
2006 E46 M3 ZCP - SOLD
2011 E70 X5 35d - SOLD
2000 E39 ///M5 - SOLD
2003 E53 X5 4.6iS - SOLD
2006 E83 X3 3.0i MSport - SOLD
2000 E46 323Ci - SOLD