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Old 30th November 2018, 10:33 PM
Mechcanico Lee Mechcanico Lee is offline
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Join Date: Jul 2015
Location: St Helens Haydock
Posts: 434
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Why is battery monitoring/energy monitor ecm not shutting down all ignition circuits when quiescent voltage drops below threshold to ‘save ‘the battery ?

Can you use a shunt inline with battery lead and measure the drain whilst car is asleep , roll boot latch over and wedge the spring loaded press in type switch on boot lid .

After say 20 mins see how many amps it’s pulling out , see if amps is a steady draw or doing any cycling or surging .

My a8 used to have dickie door handles and would wake up through the night when it was raining, but energy monitor would always clip it and I never had a flat battery on it .

I’m wondering if the body module not going to sleep ( gear stick back lighting staying lit ) is a consequence of another draw on a circuit that is not isolated by the energy monitor ecm .
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