Personally those that I have encountered are all maintenance free batteries and they can work well one moment and the next time you would not be able to restart and suddenly you would be able to start again.
When jump starting works, it means the battery is not providing sufficient draw to start and if it is not due to a faulty battery, then it should either be a poor ground or power supply connections.
Have you ever tried to clean and re-tighten the grounds and fuse box main fuse connections?
Were the charging rate tested when problem occurs?
Tuesday, January 24th, 2017 AT 9:08 PM