Dead battery again! - Page 2 - Ford Mustang Forum
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Quote:
Originally Posted by 05roush View Post
Well long story short I have never figured out why my car drains the battery but it does, always has, took it to ford numerous times the first year I had it but they could never figure it out. I have tried a few different batteries but have now decided to go with a red top optima and a battery maintainer that I will hook up periodically. What did you guys do that have had the same problem?
I have 3 battery tenders from BatteryMart.com.
1 for each mustang, electrial and one Imob solar one for my pickup truck, just in case i get stuck somewhere. It can also be used for other 12v batteries such as the garden tracker, snowmobils etc.


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I went and got some distilled water, filled the battery up some, but not to the top and its kept a charge ever since. It used to drain slow and i could tell because id get this low tone from the back end of the car. wierd.
When i shut off the car, i turn off the radio first and i dont put on the parking brake. All controls are set to off.


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Dead battery from day one. I am on the 4th battery in 2 years. No problem during cold months, even to -14, however it goes dead in 2 weeks in the summer. The Ford dealer claims I just don't drive it enough but not true and in fact before the weekends I drive it for an hour on the hiway just as fast as possible. I also shift it manually (its an automatic) to keep the RPM over 1500 so it could charge. I bought a jump start set up and keep it in the trunk so it at least doesn't stand me but it is a new car and I don't think I should have to go through this. By the way, I did put a tricle charger on it and still dead battery!
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Quote:
Originally Posted by MrH08 View Post
Shaker shouldn't be the problem or cause of the dead battery unless you don't run the car for several months. All stereo's use some constant battery power to keep the memory of your clock and settings, but shouldn't cause a heavy drain to kill a battery.

Since you've replaced your battery several times i'd check your alternator. It might not be throwing out a good of a charge to keep your battery alive. I know AM sells alternators if you want something throwing more amps. I don't know how powerful our stock ones are and if they are really an increase or not.

Also give Roush a call and see if anyone else has had battery issues.
I wouldn't be so quick as to assume that. My shaker 500 drained my battery even if i turned it off before i got out of the car. Replaced the battery, same problem. Swapped the radio out for an avic f700bt and now my battery is always strong.

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Have you recently drove through a bunch of water, big puddles, lots of constant rain, park where a sprinkler system hits your car all the time, etc...?

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Red top doesnt help btw. Changed not too long ago and every night its dead. I dont drive it enough for sure while only putting 500 miles on it in the last 4 months. Ive taken it to ford and they keot saying nothings wrong. I have a battery charger and charge it frequently. Im to the point of giving to the dealership and letting them see for themselves. Dont give it back till it starts everyday for 2 weeks.

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its the radio

My 07 Mustang GT with the standard radio keeps draining the battery. I was blown off by the service writer first time around and was told I don't drive it enough. Then was told it was the battery. Well 4 batteries later I am now being told it is the radio that is drawing it down. They have ordered me a new one. I hope this fixes it.
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Well I have 2009 GT And the auto lights just pop on when they fell like it for 2 to 10 seconds this may cause a Battery Problem.

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My mustang does the same thing. In my case, the 6 disc CD changer is spinning from chamber to chamber, loading and unloading cd's all night. I thought I had fixed it by taking all the cd's out but yesterday morning when I got in it, I could hear the motor to the changer running....barely. The battery was so low that it was having a hard time running. Ofcoarse, the car wouldn't start and the battery had to be replaced. I sprayed some contact cleaner in the cd slot and hopefully that has fixed it??
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Quote:
Originally Posted by pyro1730 View Post
have you ever replaced the alternator? that could be the reason why your battery keeps draining. before you go with the optima I would suggest getting your old battery tested and if it just needs a charge then I would suggest replacing or testing the alternator.
Have a friend with a '05, had the same problem dealer had hard time figuring out the problem, even replaced the shacker 1000, didn't work they finally found that it was the alternator. Hope this helps u

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