IS F (2008-2014) Discussion topics related to the IS F model

.150 amp draining while off

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Old 02-27-17, 01:20 PM
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jadeboy
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Default .150 amp draining while off

Anyone know what the ISF should be draining while off. I am getting .150 amp while off, it seems a little high.
Old 02-27-17, 01:43 PM
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newgsman
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I am not sure if this normal or not but I would think there are few circuits and sensors that remain active even with the car off. Presumably the remote key approach circuitry and maybe a some other could account for this. I don't think150mA should be much of a burden on a fully charged healthy car battery.
Old 02-27-17, 02:15 PM
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Htony
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Originally Posted by newgsman
I am not sure if this normal or not but I would think there are few circuits and sensors that remain active even with the car off. Presumably the remote key approach circuitry and maybe a some other could account for this. I don't think150mA should be much of a burden on a fully charged healthy car battery.
+1, sounds about right. My '15 RX hybrid draws about same.
Old 02-28-17, 07:51 AM
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FFM
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Originally Posted by jadeboy
Anyone know what the ISF should be draining while off. I am getting .150 amp while off, it seems a little high.
For how long? Most cars stay active for a few minutes after the vehicle has been shut off, and take a while in order to go to "sleep" as it's called.

This was common back when I worked for volvo. However, if it's remaining even after the vehicle was asleep, then we would diagnose by narrowing it down to which circuit by pulling and re-installing fuses with your meter hooked up until you saw the draw go away. Much more common on older cars, although there's always a risk of a module communicating when it should be asleep.
Old 02-28-17, 10:42 AM
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lobuxracer
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How far away was the key when you did this? If the key is within 5 meters, it will be communicating with it.
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