Hi, I have recently figured out that in order to get my sub to work, I need to hit around it.
After a few hits, it usually comes on temporarily.
Anybody know why this is or how to fix it?

 

To fix it you remove everything associated with bose and put a real radio in.

 

http://lmgtfy.com/?q=bose+amp+cuttin...e%3Amy350z.com

 

Came to say that. It's a disappointing system.

 

Hate to pile on but yeah... when it comes to BOSE in the Z the best option is "remove all"

 

There's a small amp behind the sub that is notorious for crapping in and out. They (bose) use this same amp in a ton of different make and model vehicles and they all have the same issue.

There's a relay on the board of the amp that loses connection. You can fix it the ghetto way sandwiching something in between the relay and the amp housing, thus applying some pressure on the connection. Either that or flip over the board and resolder the relay. If that doesn't work, you can find a new relay and solder that one in.

If you need instructions, just Google it. It's not a 350z specific problem. You'll find different walkthroughs all over.