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.
2007 Lexus LS 460LFACTORY OEM SERVICE PROCEDURE
Problem Symptoms Table
HINT:
- Use the table below to help determine the cause of the problem symptom. The potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to the system before inspecting the suspected areas below.
Power window control system:
PROBLEM SYMPTOMS CHART
| Symptom | Suspected Area | See |
|---|---|---|
| Remote UP / DOWN function does not operate | Lin communication system | HOW TO PROCEED WITH TROUBLESHOOTING |
| Can communication system | CAN COMMUNICATION SYSTEM | |
| Master switch assembly | REMOTE UP / DOWN FUNCTION DOES NOT OPERATE | |
| Driver side power window does not operate with power window master switch | D door 1 fuse | - |
| D door 2 fuse | - | |
| D-ig1- 3 fuse | - | |
| D mpx-b 1 fuse | - | |
| D-ig1 relay | - | |
| Lin communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Master switch assembly | DRIVER SIDE POWER WINDOW DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH | |
| Front power window regulator motor assembly (for driver side) | DRIVER SIDE POWER WINDOW DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH | |
| Wire harness | DRIVER SIDE POWER WINDOW DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH | |
| Front passenger side power window does not operate with power window regulator switch | P door 1 fuse | - |
| P door 2 fuse | - | |
| P-ig1-1 fuse | - | |
| P mpx-b fuse | - | |
| P-ig1 relay | - | |
| Lin communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Front power window regulator switch assembly (for front passenger side) | FRONT PASSENGER SIDE POWER WINDOW DOES NOT OPERATE WITH FRONT PASSENGER SIDE POWER WINDOW SWITCH | |
| Front power window regulator motor assembly (for front passenger side) | FRONT PASSENGER SIDE POWER WINDOW DOES NOT OPERATE WITH FRONT PASSENGER SIDE POWER WINDOW SWITCH | |
| Wire harness | FRONT PASSENGER SIDE POWER WINDOW DOES NOT OPERATE WITH FRONT PASSENGER SIDE POWER WINDOW SWITCH | |
| Rear power window LH does not operate with power window regulator switch | D rr door fuse | - |
| Rr-ig1-2 fuse | - | |
| Rr mpx-b 2 fuse | - | |
| Rr-ig1 relay | - | |
| Lin communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Rear power window regulator switch assembly (for rear lh) | REAR POWER WINDOW LH DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH LH | |
| Rear power window regulator motor assembly (for rear lh) | REAR POWER WINDOW LH DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH LH | |
| Wire harness | REAR POWER WINDOW LH DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH LH | |
| Rear power window RH does not operate with power window regulator switch | P rr door fuse | - |
| Rr-ig1-1 fuse | - | |
| P mpx-b fuse | - | |
| Rr-ig1 relay | - | |
| Lin communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Rear power window regulator switch assembly (for rear rh) | REAR POWER WINDOW RH DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH RH | |
| Rear power window regulator motor assembly (for rear rh) | REAR POWER WINDOW RH DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH RH | |
| Wire harness | REAR POWER WINDOW RH DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH RH | |
| Driver side power window AUTO UP / DOWN function does not operate | D door 1 fuse | - |
| D door 2 fuse | - | |
| D-ig1- 3 fuse | - | |
| D mpx-b 1 fuse | - | |
| D-ig1 relay | - | |
| Lin communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Master switch assembly | DRIVER SIDE POWER WINDOW AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH | |
| Front power window regulator motor assembly (for driver side) | DRIVER SIDE POWER WINDOW AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH | |
| Wire harness | DRIVER SIDE POWER WINDOW AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH POWER WINDOW MASTER SWITCH | |
| Front passenger side power window AUTO UP / DOWN function does not operate | P door 1 fuse | - |
| P door 2 fuse | - | |
| P-ig1-1 fuse | - | |
| P mpx-b fuse | - | |
| P-ig1 relay | - | |
| Lin communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Front power window regulator switch assembly (for front passenger side) | FRONT PASSENGER SIDE POWER WINDOW AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH FRONT PASSENGER SIDE POWER WINDOW SWITCH | |
| Front power window regulator motor assembly (for front passenger side) | FRONT PASSENGER SIDE POWER WINDOW AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH FRONT PASSENGER SIDE POWER WINDOW SWITCH | |
| Wire harness | FRONT PASSENGER SIDE POWER WINDOW AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH FRONT PASSENGER SIDE POWER WINDOW SWITCH | |
| Rear power window LH AUTO UP / DOWN function does not operate | D rr door fuse | - |
| Rr-ig1-2 fuse | - | |
| Rr mpx-b 2 fuse | - | |
| Rr-ig1 relay | - | |
| Lin communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Rear power window regulator switch assembly (for rear lh) | REAR POWER WINDOW LH AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH LH | |
| Rear power window regulator motor assembly (for rear lh) | REAR POWER WINDOW LH AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH LH | |
| Wire harness | REAR POWER WINDOW LH AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH LH | |
| Rear power window RH AUTO UP / DOWN function does not operate | P rr door fuse | - |
| Rr-ig1-1 fuse | - | |
| P mpx-b fuse | - | |
| Rr-ig1 relay | - | |
| Lin communication system | HOW TO PROCEED WITH TROUBLESHOOTING | |
| Rear power window regulator switch assembly (for rear rh) | REAR POWER WINDOW RH AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH RH | |
| Rear power window regulator motor assembly (for rear rh) | REAR POWER WINDOW RH AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH RH | |
| Wire harness | REAR POWER WINDOW RH AUTO UP / DOWN FUNCTION DOES NOT OPERATE WITH REAR POWER WINDOW SWITCH RH | |
| All power windows do not operate with driver side door key cylinder or wireless transmitter | Wireless door lock control system | |
| Power door lock control system | ||
| Main body ECU | ALL POWER WINDOWS DO NOT OPERATE WITH DRIVER SIDE DOOR KEY CYLINDER OR WIRELESS TRANSMITTER | |
| Key-off operation function operates even if operating conditions are not satisfied | Lin communication system | HOW TO PROCEED WITH TROUBLESHOOTING |
| Front door courtesy light switch | ||
| Main body ECU | KEY-OFF OPERATION FUNCTION OPERATES EVEN IF OPERATING CONDITIONS ARE NOT SATISFIED | |
| AUTO UP operation does not fully close power window (jam protection is activated) | Glass position initialization | AUTO UP OPERATION DOES NOT FULLY CLOSE POWER WINDOW (JAM PROTECTION FUNCTION IS ACTIVATED) |
| Improper installation (door glass run) | AUTO UP OPERATION DOES NOT FULLY CLOSE POWER WINDOW (JAM PROTECTION FUNCTION IS ACTIVATED) | |
| Power window regulator motor assembly (applicable location) | AUTO UP OPERATION DOES NOT FULLY CLOSE POWER WINDOW (JAM PROTECTION FUNCTION IS ACTIVATED) | |
| Jam protection function does not operate | Glass position initialization | JAM PROTECTION FUNCTION DOES NOT OPERATE |
| Power window regulator motor assembly (applicable location) | JAM PROTECTION FUNCTION DOES NOT OPERATE | |
| Wire harness | JAM PROTECTION FUNCTION DOES NOT OPERATE | |
| All power window UP functions do not operate with entry lock switch | Entry lock switch assembly | ALL POWER WINDOW UP FUNCTIONS DO NOT OPERATE WITH ENTRY LOCK SWITCH |
| Main body ECU | ALL POWER WINDOW UP FUNCTIONS DO NOT OPERATE WITH ENTRY LOCK SWITCH | |
| Auto down operation does not fully open power window | Glass position initialization | AUTO UP OPERATION DOES NOT FULLY CLOSE POWER WINDOW (JAM PROTECTION FUNCTION IS ACTIVATED) |
Factory Service Tools
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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.
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