Subaru Won’t Run Right After Dead Battery

The battery on a 2000 Subaru Legacy got drained due to an error on the part of the vehicle owner. Now, it stalls out after a start. Michael from Utah provides this quick case study, relaying how he resolved the problem in a very non-intuitive way. Awesome sleuthing and well…

JNC660 Powers the Porsche

“Hi folks. The JNC660 is the best of the best. When you’re tired of playing around and you decide no more nonsense, the buck stops here. Over the years, learning automotive technology and collecting a few exotic cars, several batteries ran down, especially in the cold weather. Even the SUV…

Diagnosing Manufacturer-Specific System Designs

Electrical system diagnosis and repair is tricky business to begin with. Parasitic drains, intermittent faults and inefficient/improper grounds are just a few of the ways technicians can get drawn down the wrong diagnostic rabbit hole. This was true even for vehicles from the turn of the millennium, when system design…

A Hidden Battery? Watch out!

One of the trickiest parts of electrical system diagnosis is the possibility that a second battery is lurking in the system. The second battery could have a wide variety of purposes, such as functioning as an auxiliary power battery within a Stop/Start system design. But, if you don’t know it’s…

Back to Basics: The Winter Edition

With the drop in temperatures, winter brings on a major increase in the incidence of starting and charging system issues. This is often due to the cold exposing battery weakness but can also be caused by a variety of other problems. This month, we’ll make our way around the horn…

ES5000 Mountain Rescue

“Well, I work for a very large family owned cable TV company as a construction supervisor. I received a call from a crew leader stating that, not only was the 12V battery in his machine up in the mountain stone cold flat, but now his work truck battery was dead.…

Managing the Nissan Leaf Battery

In this month’s spotlight, Jack from California provides tips related to service of the Nissan Leaf battery and battery management system. His post is very instructive and thorough, noting for instance that successful replacement of the Li-Ion Battery Controller isn’t the end of such a repair, as additional steps will…