Charging Service System Soon

[Dench1km]

Hello I am getting the charge system light and it’s intermittent. I have done basic diagnostic checked fuses checked wiring checked the BMS everything looks good. I’ve tried to use the explorer 3.5 charging circuit wiring diagram to see if I may have a loose pin somewhere but it’s totally different then the st. Does anyone have any suggestions on where to look or if someone can upload the wiring diagram for the charging circuit with the right PIN numbers and wire colors I can do a little more diagnosing. Thank you in advancd

 

[GearHead_1]

I see you have checked it, but have you reset the BMS?

 

[Dench1km]

I actually don’t know how to reset it, I have a decent scanner that shows live data etc

I see you have checked it, but have you reset the BMS?

I see you have checked it, but have you reset the BMS?

 

[Dench1km]

I see you have checked it, but have you reset the BMS?

I apologize quick google search I’ll try it when I get home seems easy enough to reset.

 

[Cdubya]

How old is your battery? BMS sensor is attached to negative terminal of battery. It has a wire harness that when removed will show that message at startup.

 

[Dench1km]

How old is your battery? BMS sensor is attached to negative terminal of battery. It has a wire harness that when removed will show that message at startup.

Battery is practically new. And reads good on the multimeter voltage wise

 

[GearHead_1]

I actually don’t know how to reset it, I have a decent scanner that shows live data etc

 

[Dench1km]

Update did the bms reset and still getting the light. It’s less intermittent now comes on almost immediately after starting the car

 

[Cdubya]

What about pulling the neg terminal of the battery for a few minutes to let everyting reboot. I often get better results that way when getting funky problems that a module reset didn't work.

 

[Dench1km]

What about pulling the neg terminal of the battery for a few minutes to let everyting reboot. I often get better results that way when getting funky problems that a module reset didn't work.

Getting same results. Where can I get the charging circuit diagram?

 

[Dench1km]

Anyone able to get charging circuit diagrams for a 2020 st