My Mustang is completely stock mechanically. The only electrical system change is sequential turn signals. And the pattern began before I added those.

The stereo is the factory Shaker 500. Haven't needed anything more than that. It has worked fine. She is garaged at night and unlocked.

 

That's odd Jon, our set ups aren't that much different although I have had different electrical things on the car (satellite radio, nitrous system and bottle heater, and line locks now) but haven't had any problems with my battery for some reason. I wonder why some of us are lucky and haven't had to change the battery and others were unlucky when it came to batteries? I could see if you had a bunch of electronics running on your car but it seems a mystery. Sorry I can't offer any help.

 

WOW...I am still using my original battery in my 2000 GT!

 

I'm thinking that the current battery supplier for Ford is the problem. I know they used to have great batteries...the 1996-vintage battery in my 265K mile Explorer is original, for gosh sakes, and is just fine. But I had a random incident of the battery being dead after sitting only 2 days in my '08 Mustang. No replacement as I had fully recharged it and the dealer tool said it was OK, but...

We just got a 2008 Mountaineer last month. The battery had been replaced by the dealer just 4 weeks before we picked it up with a new Ford OEM part. After 2 weeks of typical driving, it went dead overnight and was clearly shorted internally. I took the free replacement, but installed a Wal-Mart battery of higher capacity and have had no problems since.

=Vic=

 

I too have problems. My battery is dead after 2 year, and it is my second battery. There's no TSB?

 

On my second battery in my TR (first died after 28 months) and the second battery just went t*ts up in the TB. I keep the TR on a battery tender whenever its not going to be driven for a while and ever since, I've had no issues. Looks like its time to buy another tender for the TB or at least switch them off...

 

Have the alternators been cleared of any wrongdoing in these battery murders? I can understand parts going out on such popular vehicles (how many hundreds of thousands of S197s?), but still... I must wonder if there is a connecting clew.

 

Can't say I've taken that step, but maybe its time to take the alternator from the TB over to Auto Zone...

 

Dealer replaced my battery with a new one. We'll see if I will need a fourth later on ...