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      11-16-2019, 08:11 PM   #2
Lieutenant General

Drives: 325xi 06 wagon MT
Join Date: Jan 2010
Location: Santa Cruz, Ca

iTrader: (0)

Could be your battery is low and IBS system is turning stuff
off.(like the stereo)
Battery problems are aggravated by cold.
I would try putting a long slow charge on your battery to
see if it solves some of the problem's before doing anything

Read the first electrical pdf about IBS

electical e90 pdf,d.cGU&cad=rja,d.cGU,d.cGU

Also if I would check your amp to see its not wet.
Amp's going out due to leaks are a common problem in these.
Symtoms are Head Unit appear to function but sound is gone
or Staticy at first before it dies altogether.

Water Drains