My battery icon has been flicking on and off very quickly for the last few weeks, no its coming on and staying on for a few seconds as I drive very regularly. Its a Die Hard battery and I just bought it last year so I know its not a power problem... I checked the leads and they are fine, and there is no residue building on the terminals or any other problem with the connection. Im getting full power with everything. The car only has 54,800 miles on it, Ive had three 4.6L mustangs and this is the first I can say this has happened. Its hard starting a little..sometimes it turns over excessively before firing, the idle is a little low and this stuff coupled together makes me think alternator...Should I have the alternator tested? Is this just a computer fart?