When you turn the ignition key and the starter motor does not turn and the lights tend to fade, what could be the cause?
A)The battery has a low charge.Correct
B)The fan belt is loose.
C)Lack of coolant.
When trying to start the engine, the battery undergoes a very strong discharge of electrical energy. So if the battery has a low charge, when starting it will seem to momentarily run out, causing the vehicle's lights to fade.