2008 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.
  • Problem symptoms may occur if the electric power control system's functions malfunction. Follow the HOW TO PROCEED WITH TROUBLESHOOTING procedures.
  • The electrical equipment operation may be limited by the load control of electric power control system. Follow the HOW TO PROCEED WITH TROUBLESHOOTING procedures.

Climate control seat system 

CLIMATE CONTROL SEAT SYSTEM PROBLEM SYMPTOMS CHART

Symptom Suspected Area Refer To
Climate Control System does not Operate on Driver Side Seat climate control ECU CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON DRIVER SIDE 
Seat climate control switch LH CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON DRIVER SIDE 
Harness or connector CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON DRIVER SIDE 
Climate Control System does not Operate on Passenger Side Seat climate control ECU CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON PASSENGER SIDE 
Seat climate control switch RH CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON PASSENGER SIDE 
Harness or connector CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON PASSENGER SIDE 
Climate Control System does not Operate on Rear Left Side Seat climate control ECU CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON REAR LEFT SIDE 
Rear power seat module switch CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON REAR LEFT SIDE 
Curtain switch (w/o Ottoman) CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON REAR LEFT SIDE 
Harness or connector CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON REAR LEFT SIDE 
Climate Control System does not Operate on Rear Right Side Seat climate control ECU CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON REAR RIGHT SIDE 
Rear power seat module switch CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON REAR RIGHT SIDE 
Curtain switch (w/o Ottoman) CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON REAR RIGHT SIDE 
Harness or connector CLIMATE CONTROL SYSTEM DOES NOT OPERATE ON REAR RIGHT SIDE 
Rear Air Seat does not Operate Through Front Switch No. 1 console switch REAR AIR SEAT DOES NOT OPERATE THROUGH FRONT SWITCH 
No. 2 console switch REAR AIR SEAT DOES NOT OPERATE THROUGH FRONT SWITCH 
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.