Bad Alternator?

[Fifty150hs]

Originally Posted by Overboost

Another caveat is some theories out there is when the alternator fails, it kills that telematic unit. I suffered a alternator failure and soon after the parasitic drain coming from the common failed telematic unit occurred.

I went to the dealer for my 140 amp alternator. It was expensive but I replaced it nearly 10 years ago and have never had a problem since.

That's what happened to me. Twice. It doesn't actually kill the telematic unit, but it does something to it so it doesn't go to sleep. If you pull the fuse for it and that solves your parasitic drain, then you've identified it. In my case, the first time I put the fuse back in and the telematic worked fine and stopped not going to sleep. The second time I said screw it an pulled the telematic as I wasn't using the blue tooth anyway.