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Discussion Starter #1
This problem appeared out of nowhere. I have a 2006 CTV with only 380,000 miles. Yesterday I drove to a shopping mall and parked I came out about 10 min later and no panel lights no nothing. I took a quick look at the bat terminals and the grounds and all looked ok. Got back in the car checked the voltage but it started right up so I drove home and parked it in the Garage. This morning I put a meter on the bat and it showed 12.7 and the car started right up. I went for a drive and when I stopped I turned the key and again,nothing. I wanted to check the battery when the problem occurred but I opened the hood and hooked up to check and the car started right up. Looking at the schematics I see that there is a "hot battery" bus and a Ignition switched bus evidently both are being lost when the problem occurs. Any thoughts?
( Florida car so no corrosion at all on anything)
 

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Sounds kinda like the ignition switch itself. They do wear out and 380k might be a candidate.
 

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Remove the cables from the battery terminals, clean them, and replace them. Do the same where the negative terminal connects to the firewall. Then check your ground straps.

Sam
 

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Discussion Starter #4
Did all that and the issue persisted. This AM I put the meter directly on the battery posts and turned on the head lights The lights came on for about 5 sec then shut off the battery read about 2 volts. I taped the top of the battery and the voltage jumped with each tap . So i surmised it might be a bad connection inside the battery. I swapped it out and so far no further issues but I will be wary for at least a week :)
 

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Good troubleshooting:)

The stock Insight is pretty hard on batteries.
 

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Discussion Starter #6
No further issues, all is back to normal.
When I took the Battery back to the Retailer (still in the warranty period) They load tested it and it passed. I asked for the manager, He came and was explaining to me that the battery was "OK" and within specks I told min to put the load meter on and while holding 150 amps I gave the top of the battery a solid tap wit a large screwdriver handle. The was a loud bang and one of the vent caps went flying and the battery went to zero volts....... no more return issues. :grin:
 

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Good catch! That could have kept any of us stumped for a long time. That's a first for me and I always bought seconds from a battery manufacturer. I never even heard of such a thing.
 

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Discussion Starter #8
I have seen it before on Lead Acid aircraft batteries but never on a Auto Battery. Likely caused by a cold "weld" joint between plates.
 
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