2014 SS Charging Volts? - ModernCamaro.com - 5th Generation Camaro Enthusiasts
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post #1 of 21 Old 01-02-2015, 10:22 PM Thread Starter
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2014 SS Charging Volts?

Our car charges 15.1 - 15.3 charging volts all the time hot or cold. I verified it with my multi meter.
A dealer told me it was normal but it seems high to me.

Anyone care to share their opinion?

Thanks
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post #2 of 21 Old 01-03-2015, 08:04 AM
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Yikes. That is high. 13.2-14.4 is the normal range... Every time I saw one charging over 14.4 in my automotive career there was an underlying problem, regulator, battery resistance too high, etc

But hey at least it is under warranty and you have it on record.... The first thing to go will most likely be the battery. It will get boiled dry from the overcharging so keep an eye on it. Have you tested the battery voltage and resistance (under load with a load tester) with the car off? This might give you an indication that it is the underlying cause.

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post #3 of 21 Old 01-03-2015, 08:17 AM
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Chuck is correct, mine is never over 14.4 even after killing the battery by leaving it parked 2 days without removing the Range AFM Killer!


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post #4 of 21 Old 01-03-2015, 02:09 PM
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The tech should have checked the acceptable range of alternator output for your car. Have him show you in the factory manual. 15V is high.

Last edited by hcso617; 01-04-2015 at 01:54 PM.
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post #5 of 21 Old 01-03-2015, 03:53 PM
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Your System is fine. I too thought I had a Alternator problem. Our system monitors the condition of the Batt. then adjust Volt. It's not a steady 14 or so Volts, It can be as low as 12V, and just over 15V. (and this was shown to me in the manual, by the dealer)
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post #6 of 21 Old 01-04-2015, 08:01 AM
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Quote:
Originally Posted by gutterball View Post
Your System is fine. I too thought I had a Alternator problem. Our system monitors the condition of the Batt. then adjust Volt. It's not a steady 14 or so Volts, It can be as low as 12V, and just over 15V. (and this was shown to me in the manual, by the dealer)
No one said it was a steady state system. Just that a CONSTANT charging rate of what the OP indicated is too high. I have never see anything above 14.8 peak on an undercharged battery at startup. It would start dropping into the normal range I listed within a minute as the charge started coming up in the battery.

I've been all through the manual for my car AND a 2014 and nowhere do I see that info...

OP, if after the car has had 10 minutes of driving (not just idling) to recover the charge that was used to start the car and begin charging the battery in ernest and it is still as high as you stated, I would def ask the dealer to show you this info if they are not going to pursue this further for you....

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post #7 of 21 Old 01-05-2015, 01:40 AM Thread Starter
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Quote:
Originally Posted by hypurone View Post
Yikes. That is high. 13.2-14.4 is the normal range... Every time I saw one charging over 14.4 in my automotive career there was an underlying problem, regulator, battery resistance too high, etc

But hey at least it is under warranty and you have it on record.... The first thing to go will most likely be the battery. It will get boiled dry from the overcharging so keep an eye on it. Have you tested the battery voltage and resistance (under load with a load tester) with the car off? This might give you an indication that it is the underlying cause.
No i don't have a load tester just multi meter. I am going to take it to a different dealer. Thanks for the reply!
Quote:
Originally Posted by JWD621 View Post
Chuck is correct, mine is never over 14.4 even after killing the battery by leaving it parked 2 days without removing the Range AFM Killer!
I have never seen a car stay at 15.1-15.4V all the time while driving. This is a first.
Quote:
Originally Posted by hcso617 View Post
The tech should have checked the acceptable range of alternator output for your car. Have him show you in the factory manual. 15V is high.
Thanks, many service people seem to like to say "it's normal".
Quote:
Originally Posted by hypurone View Post
No one said it was a steady state system. Just that a CONSTANT charging rate of what the OP indicated is too high. I have never see anything above 14.8 peak on an undercharged battery at startup. It would start dropping into the normal range I listed within a minute as the charge started coming up in the battery.

I've been all through the manual for my car AND a 2014 and nowhere do I see that info...

OP, if after the car has had 10 minutes of driving (not just idling) to recover the charge that was used to start the car and begin charging the battery in ernest and it is still as high as you stated, I would def ask the dealer to show you this info if they are not going to pursue this further for you....
We just returned from a 220 mile trip. The volt gauge stayed at 15.1-15.3V the Entire time. Not giving up on this, find out what a different dealer has to say.

Thanks for the help and advice!
Bob
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post #8 of 21 Old 01-07-2015, 05:15 PM Thread Starter
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So i take the car to a different dealer today and have charging system and battery checked. Service manager says "we checked the system and battery, everything is normal". I said i have never seen any car go above 15.1V charging, Stay there and never register below that number. He told me "the car has no codes and the charging range can go from 12.5-17V." Ok so i take the complaint order that says "normal - no issue found" and leave with the charging volts at 15.5V going back home.
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post #9 of 21 Old 01-07-2015, 05:22 PM
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It might cost you money, but I wonder what some other independent retailer would tell you? (No expert at all speaking here)

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post #10 of 21 Old 01-07-2015, 05:50 PM Thread Starter
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I may do just that.
I can understand when charging volts go to 14.7 or so and then go down after vehicle has been in operation. When service told me charging volts could go as high as 17V i was shocked. Seems to me that kind of voltage would burn up a battery.
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