I got to work and turned off the RRS, and noticed a "Low Battery" come up on the radio. I then started the RRS up cause I didn't know what was going on. Battery seems fine on start up. I drove previously for 40 mins before shutting RRS down with no issues, temp was -20C(yes, very cold). Anyone know what's going on? As per all my other posts with my RRS in the deep freeze, I guess she doesn't like the cold too much.

if you were listening to music above 20 volume then it usually says that. Since you cant go above 20 with the engine off. WINNER - 2008 Best All New Photograph
WINNER - 2009 Best All New Photograph

yep sucks when one want to show up in front of my sons shool  
L 405 2013 FFRR 5.0 SC
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Ahh....okay, perfect. Makes sense. Nothing to worry about

Thought it said something along the lines of "Low Power Mode" not Low Battery

I could, of course be wrong, the S4 doesn't care whether the engine is on or not I can play ACDC as loud as I like when I like  Current: I can't say...Oh the Shame!
Gone: 2003 Audi S4 - 340BHP of Fun
Gone: 2005 RRS SE, Silver, Chrome Mirrors, Tinted with a stupid spare wheel!
Gone: Audi A4 2.5 TDi Quattro 180bhp
Gone: BMW 535i
Gone: 1985 Audi Quattro
Gone: Subaru Imprezza Turbo (rubbish)

yea usually if you try and go over 20 while the cars off then it says low power mode. I find when the car forces it 20 from a higher number it always seems to say low battery. Also when youve been listening to it for a while while off it sometimes will say low battery and not let you go over 20 for a minute or so after you drive. WINNER - 2008 Best All New Photograph
WINNER - 2009 Best All New Photograph

Had the same warning a couple of weeks ago during our English cold spell. Was advised it was because I had lights, Blowers, Front and rear screens on and of course all the heated seats on. No warnings other than low power mode on stereo. I think I need a reactor instead of an alternator.

Had the same warning a couple of weeks ago during our English cold spell. Was advised it was because I had lights, Blowers, Front and rear screens on and of course all the heated seats on. No warnings other than low power mode on stereo. I think I need a reactor instead of an alternator.