I was driving and my electronics acted like my car was off but my engine kept running for awhile and then started to act up and then stop and start acting up again. Examples of my electronics acting up are: ABS light comeing on... security light blinking... radio turning off... tach and speedo not reading.. I was wondeirng if this was an ECU problem... but when I went to start the car again if would not start... it acted as if the batter was bad... but i tested it and it was fine.. this only happens when it gets cold... I was thinking I might have water accumulation somewhere and it freezes and when my car gets warm enough it melts and shorts things out... any ideas would be amazing!!