Charging System Service Now

[Gregs24]

Well, if its really is 11v volts he shouldn't be able to start the car let alone drive for long without it dying.

I suspect the battery is taking a shit and hes not getting an accurate reading.

I've had many flat batteries / failed batteries over the years and never had a 'charge system fault warning' without there being a charge system fault

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[Zig]

I've had many flat batteries / failed batteries over the years and never had a 'charge system fault warning' without there being a charge system fault

What is the alert for a dead battery?

 

[Zig]

No, as explained above

“So a volt meter simply measures the pressure or "voltage" present in the electrical system. The assumption is that if the voltage is between 13.8 and 14.2 (a 12 volt electrical system) that the battery is fully charged and the electrical system is working properly…”


https://fifthaveinternetgarage.blogspot.com/2017/06/amp-gauges-vs-volt-meters-facts-vs.html

 

[jesuschristsupercar]

you can drive around for days on a bad alternator charge your battery so you dont stall out on the way there and bring it in to be diagnosed

Taking your advice. I removed the battery and will hook it up to a charger overnight.

 

[Gregs24]

“So a volt meter simply measures the pressure or "voltage" present in the electrical system. The assumption is that if the voltage is between 13.8 and 14.2 (a 12 volt electrical system) that the battery is fully charged and the electrical system is working properly…”


https://fifthaveinternetgarage.blogspot.com/2017/06/amp-gauges-vs-volt-meters-facts-vs.html

Things have moved on a lot.

Smart charge alternators: everything you need to know - Garage Wire

 

[Zig]

Things have moved on a lot.

Smart charge alternators: everything you need to know - Garage Wire

“The incorrect battery may not stand up to the charge rate of a smart charge system and could easy overheat causing failure of the battery…”

“The battery charge light can illuminate for various reasons and the vehicle should always be checked for underlying faults before condemning the alternator.”

 

[Zig]

Taking your advice. I removed the battery and will hook it up to a charger overnight.

Don’t forget to reset the bms

https://www.mustang7g.com/forums/threads/reset-bms.162954/

 

[jesuschristsupercar]

Don’t forget to reset the bms

https://www.mustang7g.com/forums/threads/reset-bms.162954/

Appreciate the heads up on doing the BMS reset!

 

[Gregs24]

“The incorrect battery may not stand up to the charge rate of a smart charge system and could easy overheat causing failure of the battery…”

“The battery charge light can illuminate for various reasons and the vehicle should always be checked for underlying faults before condemning the alternator.”

Well, one assumes the correct battery is fitted!

Yes indeed, as the car warning says - 'charging system fault', the alternator is part of that system but not all of it.

 

[jesuschristsupercar]

Car made it to the dealership. I will post an update when I find out what the issue is.

 

[jesuschristsupercar]

It was the alternator. They ordered a new one yesterday and it was received this morning. It's currently being installed and car should be ready sometime later today.

 

[AZ_Ryan]

It was the alternator. They ordered a new one yesterday and it was received this morning. It's currently being installed and car should be ready sometime later today.

Looks like @Gregs24 was correct. I'm glad to hear it's getting fixed.

 

[Gregs24]

It was the alternator. They ordered a new one yesterday and it was received this morning. It's currently being installed and car should be ready sometime later today.

Give the battery a good charge when you get it home as modern charging systems take a long time to recover a discharged battery unlike the old days.

 

[smurfslayer]

Thanks for updating the thread! Glad it’s a pretty straightforward fix.

 

[jesuschristsupercar]

Picked up the car. Everything seems fine. Reads 14.0 volts on the in car display. Here are the notes from the repair in case anyone is interested

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