Caution / Notice / Hint

WARNING: This page is about a different car, the 2025 Toyota Highlander and 2024 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Refer to the precautions before inspecting high voltage circuit.
Refer to PRECAUTION [11/2023 - ]
Make sure to insulate the high-voltage connectors and terminals of the HV battery with insulating tape after removing it.
If the HV battery stored without insulating the connectors and terminals, electric shock or fire may result.

NOTE:

After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
Refer to BEFORE DISCONNECTING BATTERY [11/2023 - ]
When disconnecting and reconnecting the auxiliary battery
HINT:

When disconnecting and reconnecting the auxiliary battery, there is an automatic learning function that completes learning when the respective system is used.

Refer to AUTOMATIC LEARNING CHART [11/2023 - ]
If the DTCs are cleared or the cable is disconnected and reconnected to the negative (-) auxiliary battery terminal before performing repairs, turning the ignition switch to ON (READY) may cause a malfunction. Do not turn the ignition switch to ON (READY).
Do not turn the ignition switch to ON with the service plug grip removed, as this may cause a malfunction.
If DTC P0AA0-73 is output, do not install the service plug grip before completing repair.
If the service plug grip is not removed, the HV battery will gradually discharge and the SOC will decrease.

HINT:

If DTC P0AA0-73 is output, the ignition switch cannot be turned to ON (READY).