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07/06/2021 7:43 pm
Topic starter
2012 Highlander, 2.7 4cyl, auto, 135k miles. I have a battery drain somewhere. I pulled fuses and it's within the ECU-B NO. 1 (steering sensor, gauges and meters, clock, main body ECU, wireless remote control, smart key system, power back door, multi info display, front passenger system). Don't think I can go without these. Any ideas on how to find the drain from this information?
2 Answers
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07/06/2021 8:43 pm
After the circuit goes through the underhood fusebox, it branches off to subsystems, many of which will be fused in another cabin fusebox. You could try pulling fuses there.
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07/06/2021 8:32 pm
Unfortunately your best course of action is monitor your draw and disconnect one by one until the draw goes away.
