2015 SRX battery failures - TerrainForum.net: GMC Terrain Forum
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post #1 of 28 (permalink) Old 09-07-2017, 09:22 PM Thread Starter
Cal
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2015 SRX battery failures

We have 2015 SRX that we purchased new in May of 2015. In August of 2016 we had the battery replaced by Cadillac roadside service as it failed to start after a 630 mile trip. There was no indication that the battery was not charging or failing. This past Monday the car again failed to start and roadside service came and jump started it and we drove it home. The next morning it failed to start again and I had to jump start it with our other vehicle. I took it in to the service department on Tuesday and we got the call this morning that it was ready to be picked up. The diagnosis again was a failed battery. So that is the third battery in just over two years in a vehicle with less than 20,000 miles on it.

We have had quite a few new vehicles and most of them have had at least 4 and some last up to 6 years with the original batteries. It's very disturbing that a $40,000 + vehicle can't sustain more than a years worth of service life from a battery. Although the local Cadillac service department ran an overnight draw test on it, they couldn't find anything for the second time and just said that it was a dead cell in the battery as it was the first time......very unusual!

Are there any other folks that have been experiencing this phenomenon with the SRX?
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post #2 of 28 (permalink) Old 09-22-2017, 11:11 AM Thread Starter
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Wow!

173 views and no replies! I guess nobody is having issues with their batteries except us!!!! Oh well, thanks for looking
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post #3 of 28 (permalink) Old 09-22-2017, 07:22 PM
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173 views and no replies! I guess nobody is having issues with their batteries except us!!!! Oh well, thanks for looking
I'm no car expert, but unless the 2nd battery was also a lemon, its got to be something like the alternator. The alternator should re-charge the battery during use. Or you have something using a bunch of power over time while sitting.
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post #4 of 28 (permalink) Old 09-22-2017, 08:10 PM
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I'm no car expert, but unless the 2nd battery was also a lemon, its got to be something like the alternator. The alternator should re-charge the battery during use. Or you have something using a bunch of power over time while sitting.
My intuition is still betting on 2 bad batteries. They may have come from the same build-batch, and there are probably more bad ones "available".

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post #5 of 28 (permalink) Old 09-22-2017, 09:55 PM
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Me too. A mere discharge would not cause a dead cell that I know of. Should recharge ok. And these batteries are powerful, even with a small draw of some sort it would probably start the engine the next morning.
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post #6 of 28 (permalink) Old 09-23-2017, 09:00 AM
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Alternator's voltage regulator could be bad, causing it to *overcharge* your battery. That would be a slow kill, but maybe a 630-mile trip could provide the knockout punch.

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post #7 of 28 (permalink) Old 09-23-2017, 03:42 PM Thread Starter
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SRX Battery

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Originally Posted by MrTroy03 View Post
I'm no car expert, but unless the 2nd battery was also a lemon, its got to be something like the alternator. The alternator should re-charge the battery during use. Or you have something using a bunch of power over time while sitting.
Thanks for the reply!

I know GM changed the charging circuit in their vehicles starting in 2005 and have changed them even further since. It is not your old alternator with a built in regulator anymore.......much more computerized now. The dealer claimed they did an overnight draw test on the entire electrical system and couldn't find any gremlins! But I agree, unless there were two lemon batteries, it has to be a charging problem.
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post #8 of 28 (permalink) Old 09-23-2017, 03:44 PM Thread Starter
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2015 SRX Battery

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Originally Posted by RIT333 View Post
My intuition is still betting on 2 bad batteries. They may have come from the same build-batch, and there are probably more bad ones "available".
Thanks for the reply!

Sir you may be entirely correct. I have no idea of the date of manufacture on the first or second battery.
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post #9 of 28 (permalink) Old 09-23-2017, 03:48 PM Thread Starter
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2015 SRX Battery

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Me too. A mere discharge would not cause a dead cell that I know of. Should recharge ok. And these batteries are powerful, even with a small draw of some sort it would probably start the engine the next morning.
Thanks for the reply!

There are so many modules in this vehicle that there will always be some kind of discharge or "drain" on the battery. I know the On Star system had a TSB on it for a draw that resulted in a dead battery condition. But the dealer nixed that one too!
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post #10 of 28 (permalink) Old 09-23-2017, 03:58 PM Thread Starter
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2015 SRX Battery

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Alternator's voltage regulator could be bad, causing it to *overcharge* your battery. That would be a slow kill, but maybe a 630-mile trip could provide the knockout punch.
Thanks for the reply!

Yes, I guess that would be possible. But again, I refer back to the dealer finding nothing wrong when it was in twice for the same failure!

I asked, and was told by two service advisors, that there aren't any Cadillac engineers that go into the field to check out these hard to find solutions. I found that very unbelievable due to the fact that we had a previously owned Jeep Cherokee that turned out to be a lemon because of the transmission. Chrysler/Fiat definitely had factory engineers in the field working on that problem.
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