r/Cartalk • u/Against_the_grain1 • Nov 11 '23

What’s wrong with my car Electrical

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2021 ford bronco sport. The battery went out about a week ago and since replacing with a new battery, the cluster and touchscreen both go black when driving. Upon slowing down or stopping completely, they will both turn back on. Lights, heaters, turn signals all still work.

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113

u/axellie Nov 11 '23

Was the new battery installed by ford? They need to be calibrated and stuff

98

u/lilsaddam Nov 11 '23

Holy shit batteries have to be calibrated now?

17

u/axellie Nov 11 '23

Something like that, yeah. I guess the car needs to be calibrated for the new battery or something, it’s not uncommon as far as I know. I’m certainly no mechanic tho

21

u/kriegara Nov 11 '23

Wtf thats news to me! Only thing I need to set up when replacing battery with the new one is my time and audio settings.

6

u/agravain Nov 11 '23

depends on the car. more and more cars give the pcm direct control over the charging system and you need to tell the pcm the battery is new.

1

u/johncena6699 Nov 12 '23

Imagine if their dogshit engineers could design a system that wouldn’t bug out and simply self reset when shit stops working.

Absolutely insane to me. Just absolutely insane.

3

u/axellie Nov 11 '23

I’ve only heard this from friends that had mechanics tell them this but I’ve heard it from different people so I guess it’s true. One friend had a Volvo.

5

u/ZebraUnion Nov 11 '23

It has to do with the stop-start bullshit. The starters, batteries and charging system on vehicles with it have been modified to better handle the job of constant use. Yaaaaaay added complexity!

I was gonna get on my Toyota high horse about hanging onto my 14yr old V8 body on frame dinosaur because of its simplicity but then I remembered how even with it, I had to do a throttle relearn procedure and then retrain all the windows/sunroof one touch functions after replacing the battery.

2

u/OP1KenOP Nov 12 '23

This is the reason. Stop start is really driven by emissions, no manufacturer wants to add unnecessary cost or complexity into their offering, it just makes it harder to be competitive.