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Parasitic power loss

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  • #856327
    BrianBrian
    Participant

      Hey guys, I’m working on a 2007 Toyota Camry v6. Its draining the power overnight. The battery and alternator have both been cheked, no issues there. I did the test where the negative cable is removed (after sitting for an hour) and I attach meter leads to the negative battery post and the negative terminal. I watched the voltage climb steadily, from 11.3 to 12.6 volts before I even started testing. I removed each fuse and relay, one at a time, looking for any power loss, there was none. I did that through both fuse boxes. I completely disconnected the starter motor, no drop. Same on the alternator disconnect, no power drop. I did find d a dead mouse resting in piece between two coil packs. I did spend over an hour with flashlights looking for any chewed wired, the entire engine bay looks nice. Does anyone know what the problem could be? There are no engine codes reading wither, but the tire pressure monitor indicator is on. I assume one of the wheel mounted sensors has a dead battery. Please help!

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    • #856331
      Shaun FlichelShaun Flichel
      Participant

        You should test on amperage mode. Be aware most meters are only good for 10 amps. Your looking for current draw.

        #856333
        zerozero
        Participant

          You can also read the complete article. Some cars can take several minutes to go into sleep mode. Any time you remove and reinstall a fuse for a module, the whole process has to be started again. Fords in particular take 45 minutes to power down.

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