I live in the UK and lately is being quite cold. I've seen this question to see common problems related to a cold weather. This morning however something weird happened. I own a peugeot 206, and it happened that I forgot to turn off the radio, which is usually ok (so far) because when I turn off the engine the radio turns off automatically, but when I start the engine again the radio turns on together with the engine.
This time instead happened that I turned on the engine and the radio turned on as well (usual) but I couldn't turn off the radio using the radio button that would turn the radio on and off while the car is running, also it took a while to turn off the radio even if the I turn off the engine.
This thing make me wonder if the battery could die while I'm far away from the car, which would be of course annoying...
Why did this happen? What would you suggest to do in such a case? (other than probably pay more attention and turning off the radio before I shut down the engine).