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Last month’s iATN post was related to a no-start BMW that looked a lot like an EWS failure but turned out to be a faulty ground. In this month’s post, Jurgen from San Cristo’bal De Las Casas (Mexico) identifies anther common no-start culprit in a BWM wake up circuit, the Intelligent Battery Sensor, which is integrated into the negative battery terminal. His post could save you some time and help you avoid heading down some blind alleys when diagnosing a similar complaint:

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About iATN

The International Automotive Technicians Network is the largest network of automotive repair professionals in the world: a group of 80,000+ automotive professionals from over 160 countries. The members of this group exchange technical knowledge with their peers around the globe, sharing 1.8 million years of experience. iATN has been proudly serving the automotive service and repair industry and the needs of professional automotive mechanics around the world, for over 15 years.