Today,for the first time I've lent my 8L S3 to the mrs because we sold her car yesterday and she needs mine for a few days. So,tonight I walk outside,the car is all locked-up but the radio is all lit-up red,there's no writing on the display or anything and I've put the key in the ign,tried to turn the radio on to see what's going on.....and the radio won't switch on. Anyone have any idea what the hell is going on? Dreading coming to it on the morning and the battery is dead!