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  • Anybody here know of an information resource for Hybrid Lexus?

Anybody here know of an information resource for Hybrid Lexus?

#443734
jacobnbr1jacobnbr1
Participant

    Yes, please do not touch the orange wires at all, most hybrids have a master switch but Toyotas / Lexus (same thing) didn’t utilize this option at all which makes it harder for us emergency responders.

    The rx400h is the same except the 12 volt battery is located in the engine bay passenger side and the relay to remove is igct#4 of the fuse box/relay center driver side engine bay area.

    1. PRECAUTIONS FOR HIGH-VOLTAGE CIRCUIT INSPECTION AND SERVICE NOTE: The RX400h hybrid system contains a 288V high-voltage system with a strong alkali solution of potassium hydroxide. Be sure to follow the instructions to handle the system correctly. Failure to do so may result in serious injury or electrocution.

    (a)Engineer must undergo special training to be able to perform high-voltage system inspection and servicing.(b)All high-voltage wire harness connectors are colored orange. The HV battery and other high-voltage components have “High Voltage” caution labels. Do not carelessly touch these wires and components.
    (c)Before inspecting or servicing the high-voltage system, be sure to follow safety measures, such as wearing insulated gloves and removing the service plug to prevent electrocution. Carry the removed service plug in your pocket to prevent other technicians from reinstalling it while your are servicing the vehicle.NOTE: Do not put the vehicle into the READY-on state after removing the service plug grip as the ECU may be damaged.(d)After removing the service plug, wait 5 minutes before touching any of the high-voltage connectors and terminals.HINT: 5 minutes are required to discharge the high-voltage condenser inside the inverter.
    And then this.

    • Immobilize Vehicle Chock wheels and set the parking brake.

    Move the shift lever to the P (Park) position.

    • Disable Vehicle Performing either of the following two procedures will shut the vehicle off and disable the HV battery pack, SRS, and gasoline fuel pump.

    Procedure #1
    Turn the ignition key off.

    1. Remove the key and place on dash.
    2. If the key cannot be removed, disconnect the 12-Volt auxiliary battery in the engine compartment.

    Procedure #2 (Alternate if ignition key is inaccessible).

    1. Disconnect the 12-Volt auxiliary battery in the engine compartment.
    2. Remove engine compartment covers.
    3. Remove the fuse box cover.
    4. Remove the IGCT No. 4 fuse (10A Red colored) in the engine compartment junction block. When in doubt, pull all four fuses in the fuse block.

    WARNING:High voltage electricity can cause death or serious injury from severe burns or electric shock. To avoid death or serious injury wait 5 minutes after disabling the vehicle to discharge high voltage electricity, and do not touch, cut, or open any orange high voltage power cable or high voltage component.The SRS airbags can cause death or serious injury by sudden deployment. To avoid death or serious injury wait 90 seconds after disabling the vehicle to allow the SRS backup power to discharge.

    If neither of the disabling procedures can be performed, proceed with caution as there is no assurance that the high voltage electrical system, SRS, or fuel pump are disabled.

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