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2003 Prado 120 4.0 V6 battery drain

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  • 2003 Prado 120 4.0 V6 battery drain

    Hi Guys

    I need some advice. My vehicle battery goes flat in a few days. I found the isolated the circuit in the fuse box which is the culprit. it is a 10A fuse called ECU−B (Anti−lock brake system, active traction control system, vehicle, stability control system, air conditioning system, cool box, power windows Anti−lock brake system, active traction control system, vehicle stability control system, air conditioning system, cool box, power windows) All these systems in my car is working except mine did not come with a cool box.

    Has anyone here experienced a similar issue? That is a lot of systems to find and isolate. Where is the most likely place to start. I took it to a dealership previously and they said the OBD diagnostics is only for the engine ECU it is not connected to the ABS, Traction or Stability Control systems. They don't seem keen on trying to find the fault either.
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