Quote:
Originally Posted by StephenVA
Help your tech understand what the proper procedures are may help him figure out what is going on. At 15 years the ground ends vibrate loose and cause issues that float around. There a host of ground ends , connecting, etc that should be cleaned and tightened to eliminate poor connections. The only way to ensure proper connectivity is through a volt drop test or a resistance test. All just take a basic understanding of electricity and time. At normal shop rates and processes it is very time consuming so most techs bail and throw parts at the problem instead.
A few have posted that one are to look at is the jump point on the positive cable under the hood. They post that the end comes loose and causes a herd of issues.
Good luck
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IMO there is no certain number of years where the cause of battery drain or parasitic drain will be a loose or corroded connection, could be one year, thirty years or may not be an issue in its lifetime. I agree, that as part of the troubleshooting before buying parts, the primary connection at the battery and under the hood should be removed, cleaned and reinstalled and check the voltage at the battery and under the hood, should be the same both sitting and running.