2005 Lacrosse Heated Mirror Parasitic Draw

danpaluck

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2005 Buick Lacrosse CXL
Hey all!

My battery has been dying a lot during the winter when I dont drive as often. After some testing I narrowed it down to the HTD/MIR (Heated Mirror) fuse.

The fuse itself looks fine and after replacing, I'm still getting a big draw when powered off.

Has anyone else encountered this? Are the heated front mirrors the only thing connected to this circuit or is there some other system also connected that I need to check? I can't seem to find any information online about this.

Thanks in advance!
 
Check the owners' manual for a fuse diagram.
 
It's probably what ever is telling that mirror to heat up, not the actual mirror.

A scanner would know if the HVAC controls are telling the body control module to call for heat. I think in Defrost, it calls for heat.
 
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