I had a problem 7 days ago: I could not start my car. Temperature on that day was -17 (-27°C ). I heard just 1 click and that's it. One day later it was 32F (0°C) and I could start the car. I could see dimming lights when I start the gas pedal.
Can you help me; battery or alternator? I am not sure what the problem is. That day when I couldn't start my car windows on my car were so slow so I thought it is battery.