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Old 02-20-2013, 11:38 PM   #1
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Join Date: Jan 2013
Location: Eagle, ID
Posts: 2
My Ride: 2004 BMW 325i
TCU error

Does anyone know what the error "NAD transceiver failure" is? I have searchd for the error but can't find anything.

My TCU has 3 wires connected to it; white, blue and black. Also I have a bluetooth mic and antenna, but my bluetooth doesn't work. I do have a 2004 325i, and have read that these didn't have bluetooth included with the assist, but am not sure if the previous owner changed out the TCU or not. The antenna is the part that is confusing me, but I came across one post that mentioned it was sometimes included with assist (doesn't make sense to me). I also have the telephone manual with passkey, as others have mentioned they received.

Does anyone know of a way to identify if the TCU is damaged, besides taking it to a dealership?
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