Removal [11/2021 - ]: Procedure
WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 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
See step 2
- 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 [11/2021 - ]
- 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 [11/2021 - ]
- 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