r/Cartalk • u/Outside-Employer-539 • 1d ago

Electrical 2015 Mustang

Any ideas as to what this issue could be? The Christmas tree and the alerts come after all my interior goes completely dark. Even the windows don’t roll down.

This usually happens at freeway speeds or when I step on it. I never see this while driving in the city.

Im wondering if it might be the alternator due to the loss of lighting when I get on the gas, but I’m not experienced enough to be sure about that.

The battery is only about one year old.

3 Upvotes

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2

u/blackthought_ 1d ago

Does the car actually die? If it’s the alternator going bad it wouldn’t charge your battery and the car would no longer turn back on

3

u/YawnY86 21h ago

Checking the charging system and inspect the chassis grounds.

1

u/Outside-Employer-539 9h ago

It doesn’t die and has never NOT started

I haven’t used it as my daily anymore for a few months and maybe only drive it on the weekends, so that was another thought as to why I might be having these issues

1

u/blackthought_ 7h ago

Can you check to see if the battery terminals are tight and not corroded?

2

u/run_uz 1d ago

Have charging system tested, soon

2

u/kurangak 20h ago

Alternator going out soon

2

u/fishead36x 18h ago

I think there's a ground strap or 3 loose. Whatever it is you need to find it before you fry the control modules. That is if you haven't already. Fords don't like bad grounds.