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Old Sep 19, 2016 | 08:22 AM
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Default What does this message mean?

Yesterday when starting up my car this message showed up on my dash for a few seconds and then disappeared: "Charge system fault". It has happened once or twice before.

What does it mean? What should I do?

All advice gratefully received.
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Old Sep 19, 2016 | 08:37 AM
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Alternator... or plug connector? bad ground (bat terminals)? low battery (age)?
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Old Sep 19, 2016 | 09:27 AM
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DO NOT REPLACE YOUR ALT WITH A REBUILT ONE, have yours fixed if that indeed is the problem !!!!
https://www.corvetteforum.com/forums...nd-issues.html
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Old Sep 19, 2016 | 09:48 AM
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Originally Posted by Koufax
Yesterday when starting up my car this message showed up on my dash for a few seconds and then disappeared: "Charge system fault". It has happened once or twice before.

What does it mean? What should I do?

All advice gratefully received.
Mine did that a couple times a few years ago. Cleaned and tightened terminals and started using a tender when it sat for awhile. Never did it again.
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Old Sep 19, 2016 | 11:40 AM
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AS PER THE OWNERS MANUAL, seeing that message is NOT an issue as long as it not an every day occurrence and it goes out shortly after it comes on. If it were my car, I wouldn't worry about it unless you see it frequently and or it stays on for an extended period of time after starting the car!

I agree with checking all the positive battery terminals "Starter solenoid, Battery Positive terminal and the BATT terminal on the back of the alternator for a secure/clean / tight conection. DO NOT EVER give your OEM alternator to the parts place as a core!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!

Read the battery voltage (engine running) at the battery cables with a Volt meter.



BC
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Old Sep 19, 2016 | 11:42 AM
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Originally Posted by Bill Curlee
DO NOT EVER give your OEM alternator to the parts place as a core!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!





BC

Why are you so emphatic about this Bill?

Last edited by imjdoggie; Sep 19, 2016 at 11:43 AM.
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Old Sep 19, 2016 | 12:18 PM
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Originally Posted by Koufax
Yesterday when starting up my car this message showed up on my dash for a few seconds and then disappeared: "Charge system fault". It has happened once or twice before.

What does it mean? What should I do?

All advice gratefully received.
That happened to me recently momentarily and hasn't happened again.
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Old Sep 19, 2016 | 01:41 PM
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Originally Posted by imjdoggie
Why are you so emphatic about this Bill?
you have not read the Horror stories of replacing a C 5 alt with a rebuilt ???????
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Old Sep 19, 2016 | 02:11 PM
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I have gotten that message a couple of times since I got my Z. It had a brand new battery when I bought the car. I just ignored the message since there really doesn't seem to be a problem.

Shakey
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Old Sep 19, 2016 | 05:36 PM
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Originally Posted by The Rabbi
That happened to me recently momentarily and hasn't happened again.
Same here....first time in 15 years, about 2 weeks ago. Just for "s**ts&giggles", I checked the battery terminals, and it hasn't happened since.....
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Old Sep 20, 2016 | 12:29 AM
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Originally Posted by Bill Curlee
AS PER THE OWNERS MANUAL, seeing that message is NOT an issue as long as it not an every day occurrence and it goes out shortly after it comes on. If it were my car, I wouldn't worry about it unless you see it frequently and or it stays on for an extended period of time after starting the car!

I agree with checking all the positive battery terminals "Starter solenoid, Battery Positive terminal and the BATT terminal on the back of the alternator for a secure/clean / tight conection. DO NOT EVER give your OEM alternator to the parts place as a core!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!

Read the battery voltage (engine running) at the battery cables with a Volt meter.



BC
It's happened to mine a few times. It has not be a regular occurrence and has not affected my use of the car.
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Old Mar 8, 2017 | 12:11 AM
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Originally Posted by Pounder
you have not read the Horror stories of replacing a C 5 alt with a rebuilt ???????
Just reading some old threads, Is there anyway to tell if you still have the original alternator?
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Old Mar 8, 2017 | 08:11 AM
  #13  
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You might also want to check the belt tension, idler and the pullies.
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Old Mar 8, 2017 | 08:19 AM
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Only seen that twice with my car, happened both times it sat for about 3 weeks as I was traveling and forgot to throw the tender on it. Typically if I know she will sit for a week plus she gets plugged in.
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Old Mar 8, 2017 | 09:51 AM
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This is my belief, not what I know for sure so take it with a grain of salt. I have gotten that message a few times and always when the car has sat for a while. I believe that the car is momentarily picking up the low battery voltage right when it is started, then as the alternator brings the voltage to where it needs to be (within a few seconds) the car sees that all operations are normal and the message goes away. I have never worried about that message when I have seen it...
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