I'm new to this forum but i have a quick question and hope someone can help me. I have a 2003 350z and I am having problems with my power to the windows locks and electric seats. One moment they will be working fine and then out of nowhere there will be no power to the windows locks or seats. And its always all three together not just one or two or three its always the windows locks and power seats. I took it to the dealer they said it was the BCM. After changing it, they were were working fine for two days, then all of a sudden the same problem, no power to the windows, locks or seats. It is quite frustrating that one moment they will work and the next they dont and it happens at random times. I have stopped using the windows for fear that they will get stuck down. Has any one else had this problem or Know what might be causing the power to be going in and out like this ???

 

I don't know anything about cars, but I'm going to say that your problem can be traced INFALLIBLY to a fuse, becauses fuses do stuff for electrical sh*t.

 

It might be your BCM.
https://my350z.com/forum/exterior-an...module-is.html
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If it was only the power seats, I would say replace the switches. Very common problem with the Z. Both switches cost less than 150.00 together. Very easy to replace.. But the combination with the windows is making me think otherwise