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Question: Is there a connection between the Internal Power Distribution Module and the tilt steering motor?

I have a 2009 Nissan Murano LE just purchased 2 months ago June 2012. The motor for the tilt steering went bad so i took it in to the dealership to have it replaced. Works great now, but the day I got my car back, the battery and brake lights came on and (the dealership said a sensor might just need to be reset or something) that night the power just shut down while I was driving it. Had to have it towed back to dealership. They said that the Internal Power Distribution Module went bad and said they have never had to replace one of these in a Murano. My question is, "Is there a connection between the two, and could they have damaged this while replacing the motor for the tilt steering, or is this just a bizarre coincidence?" Seems fishy that this didn't happen until the day I got my car back from having it serviced for the tilt steering motor replacement.
I am a single mother who does not get any child support, and cannot afford to keep having these issues pop up because they are very expensive. An honest opinion would be so greatly appreciated.
Thank you.