2012 Mustang starting and electrical issued
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Joined: February 17, 2018
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2012 Mustang starting and electrical issued
Hello been having this issue going on a year. 2012 Mustang 5.0 will not start when temperatures drop below 40 degrees. Runs and starts all summer no issues lights dim when volume is turned up also . But now it being cold if it sits over night will not start ,as soon as I jump it fires right up took it to the dealership they told me bad battery changed battery brand new still same issue any thoughts would be great thank you
Shelby GT350 Member
Joined: February 26, 2012
Posts: 2,205
Likes: 392
From: Down south in Dixie
If you can, stop by your local Autozone, etc., let them check your electrical system, and battery. It's free. Then you'll have a better idea of what may be going on. It sounds like you have a charging issue. Good luck.
Last edited by wanted33; Feb 17, 2018 at 02:50 PM.
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Joined: February 17, 2018
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Already done just bought a new battery today and it lunched an auto zone battery that was less then 1 and a half years old I’m thinking it’s the alternator or the starter dealer just checked electrical system yesterday and all they told me was bad battery
legacy Tms Member MEMORIAL Rest In Peace 10/06/2021
Joined: September 16, 2009
Posts: 3,381
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From: Clinton Tennessee
Have the charging system tested at another place. If it test good, then you have a parasitic draw. There is a youtube video on how to find a parasitic draw. I had to do this to my old F150, only had 20 or so fuses to check. Our Mustangs have a lot.....
. Good luck 
. Good luck
Shelby GT350 Member
Joined: February 26, 2012
Posts: 2,205
Likes: 392
From: Down south in Dixie
David, haven't I read somewhere the Shaker radios can cause a draw? Something to do with the CD system I think, but I'm not sure if that included the 2012's.
legacy Tms Member MEMORIAL Rest In Peace 10/06/2021
Joined: September 16, 2009
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From: Clinton Tennessee
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