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Wondering if anyone’s ever seen this. Had an 06 Lexus I S2 50 with an amperage draw of 150 mA. Pulled all fuses and no amperage drop. Vehicle did have a faulty battery customer stated he replaced it about four months ago. Customer complaint was that of a parasitic draw which it indeed did have. Looking for any insight.
150ma is about 100 to 130 ma above acceptable I always check the alternator but alternator issues tend to draw much larger currents. 120m above normal looks to me like either a unit isn't going sleep or there is aftermarket junk hidden somewhere.
" We're trying to plug a hole in the universe, what are you doing ?. "
(Walter Bishop Fringe TV show)
Did you find all the fuse boxes in the car? Typically 2 under hood 2 in under dash but sometimes the have misc fuses in odd places like bmw. It's worth rechecking. Also look for a GPS tracker that used car dealers put in under dash they can draw that much as well as any aftermarket stuff like radio or amplifier etc. Otherwise break out a flir camera and look for the heat. It could also be a relay stuck on. Another thought would be to scope the can lines and see if there is communication still being sent to see if a module is still on.
A couple more thoughts - make sure you are waiting long enough for everything to power down. I got burned recently by one that took about 40 minutes for the bcm to shut down. Although if you pulled all of the fuses this wouldn't matter. I usually see draws like this with remote starts under the dash. Could be your hidden fuse. The other thing is to make sure there aren't any keys in the vehicle. Some vehicles keep stuff alive when the keys are inside. I've never seen that one myself but think there was a motorage article about it.
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