Removal [08/2023 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus RX 450h+, 2025 Lexus RX 350h, 2024 Lexus RX 450h+, 2024 Lexus RX 350h, and 2023 Lexus RX 350h. However, it is still accessible from the selected car via links, so may be relevant.
- PRECAUTION NOTE:
After the ignition switch is turned off, there may be a waiting time before disconnecting the negative (-) auxiliary battery terminal.
- DISCHARGE FUEL SYSTEM PRESSURE
Refer to PRECAUTION [08/2023 - ]
- REMOVE BATTERY SERVICE COVER PLATE
Refer to PROCEDURE - Step 2
- DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL
Refer to PROCEDURE - Step 3
- REMOVE THROTTLE BODY WITH MOTOR ASSEMBLY
Refer to REMOVAL [08/2023 - ]
- REMOVE NO. 2 WATER BY-PASS PIPE
- Disengage the clamp to disconnect the HV air conditioning wire.
- Slide the clip and disconnect the No. 8 water by-pass hose from the No. 2 water by-pass pipe.
- Using an 8 mm socket wrench, remove the 2 bolts and separate the No. 2 water by-pass pipe from the intake manifold.
- Remove the bolt and No. 2 water by-pass pipe from the cylinder block sub-assembly.
- REMOVE FUEL PIPE CLAMP
- DISCONNECT FUEL TUBE SUB-ASSEMBLY
- Disconnect the fuel tube sub-assembly from the fuel (engine room side) pump assembly and fuel delivery pipe sub-assembly.
Refer to PRECAUTION [08/2023 - ]
- Disconnect the fuel tube sub-assembly from the fuel (engine room side) pump assembly and fuel delivery pipe sub-assembly.
- REMOVE NO. 1 FUEL PIPE SUB-ASSEMBLY WARNING:
To prevent serious injury due to fuel spray from the high-pressure fuel lines, always discharge fuel system pressure before removing any fuel system components.
- Disconnect the ignition coil connector.
- Using an 8 mm socket wrench, remove the bolt.
- Using a 17 mm union nut wrench, loosen the 2 union nuts of the No. 1 fuel pipe sub-assembly.
- Loosen the 2 bolts of the fuel (engine room side) pump assembly.
- Remove the No. 1 fuel pipe sub-assembly from the fuel delivery pipe and fuel (engine room side) pump assembly.
- REMOVE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY NOTE:
When replacing the fuel (engine room side) pump assembly, it is necessary to replace the No. 1 fuel pipe sub-assembly with a new one.
- REMOVE FUEL PUMP SPACER GASKET
- REMOVE FUEL PUMP LIFTER ASSEMBLY