Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSLEXUS2006RX 400H AWD V6-3.3L (3MZ-FE) HYBRIDREPAIR AND DIAGNOSISSTARTING AND CHARGINGSERVICE PRECAUTIONS
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) Hybrid
Starting and Charging: Service Precautions
2006 Lexus RX 400h AWD V6-3.3L (3MZ-FE) HybridSECTION Service Precautions
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 in this manual 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.
e. Before wearing insulated gloves, make sure that they are not cracked, ruptured, torn, or damaged in any way. Do not wear wet insulated gloves.
f. When servicing the vehicle, do not carry metal objects like mechanical pencils or scales that can be dropped accidentally and cause a short circuit.
g. Before touching a bare high-voltage terminal, wear insulated gloves and use a tester to make sure that the terminal voltage is 0 V.
h. After disconnecting or exposing a high-voltage connector or terminal, insulate it immediately using insulation tape.
i. The screw of a high-voltage terminal should be tightened firmly to the specified torque. Both insufficient and excessive torque can cause failure.
j. Use the "CAUTION: HIGH VOLTAGE. DO NOT TOUCH DURING OPERATION" sign to notify other engineers that a high-voltage system is being inspected and/or repaired.
k. After servicing the high-voltage system and before reinstalling the service plug, check again that you have not left a part or tool inside, that the high voltage terminal screws are firmly tightened, and that the connectors are correctly connected.
l. Do not place the battery upside down while removing and installing it.
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 in this manual 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.
e. Before wearing insulated gloves, make sure that they are not cracked, ruptured, torn, or damaged in any way. Do not wear wet insulated gloves.
f. When servicing the vehicle, do not carry metal objects like mechanical pencils or scales that can be dropped accidentally and cause a short circuit.
g. Before touching a bare high-voltage terminal, wear insulated gloves and use a tester to make sure that the terminal voltage is 0 V.
h. After disconnecting or exposing a high-voltage connector or terminal, insulate it immediately using insulation tape.
i. The screw of a high-voltage terminal should be tightened firmly to the specified torque. Both insufficient and excessive torque can cause failure.
j. Use the "CAUTION: HIGH VOLTAGE. DO NOT TOUCH DURING OPERATION" sign to notify other engineers that a high-voltage system is being inspected and/or repaired.
k. After servicing the high-voltage system and before reinstalling the service plug, check again that you have not left a part or tool inside, that the high voltage terminal screws are firmly tightened, and that the connectors are correctly connected.
l. Do not place the battery upside down while removing and installing it.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.