Battery Again

[steve2150]

I have a 2019 Bullitt and a 2020 Ecoboost Premium. I mainly use the Bullitt but drive the Ecoboost once a week, probably will sell it since I hardly use it. Got the Ecoboost January 2021, had to get a jump start a few times then drove to dealer but it showed good to them since it charged from the drive. Finally in September had it towed to dealer and it showed a dead cell and 10.7 volts. I asked is there something drawing the power while parked and is the battery saver cicuit working, their answer was the alternstor is charging okay. They replaced the battery. So now 6 months later after about 7 days of not using the car the battery is completely dead and had to use the key to open the door to open the hood. Something must be drawing the power in such a short time of non use. The battery saver circuit is a joke. Guess if I am only gonna use it once a week I should start it and ket it run 10 minutes daily till I sell it. I guess the dealer does not have the equipment to check if circuits are drawing power and only if alternator charging.

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[Call_Me_Bruce]

You need to take it in for a parasitic draw/voltage drop test. It takes a while to figure out what circuit and what module may be causing the issue.

 

[steve2150]

Roadside came by could not charge it said stuck in security mode. I checked Fordpass app and it had about 70 messages started with when I opened the door with the key stating alarm triggered. Now waiting on a tow to dealer. Would the dead battery have triggered it. The guy who came to jump uit had no clue, blamed it on my fob battery. I took battery out of bullitt fob same results.

 

[Cobra Jet]

You need to take it in for a parasitic draw/voltage drop test. It takes a while to figure out what circuit and what module may be causing the issue.

That is the only way to resolve that type of issue... If the original battery was killed in so little time and now a brand new replacement is also dead on so little time, something is creating the draw when the car is not being used.

Do you have any aftermarket accessories installed on the car such as radar, back up cam, or aftermarket stereo components?

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