Section 409 (Climate Control Seat System): Troubleshooting

WARNING: This page is about a different car, the 2003 Lexus LS 430. However, it is still accessible from the selected car via links, so may be relevant.

Climate control does not operate (Blinking pattern "1")

Fig 1: Climate Control Does Not Operate (Blinking Pattern "1") Troubleshooting Flow Chart
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Fig 2: Inspecting Climate Control ECU - Seat Back Side
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Fig 3: Inspecting Climate Control ECU - Seat Cushion Side
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Climate control does not operate (Blinking pattern "2")

Fig 4: Climate Control Does Not Operate (Blinking Pattern "2") Troubleshooting Flow Chart
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Climate control does not operate (Blinking pattern "3")

Fig 5: Climate Control Does Not Operate (Blinking Pattern "3") Troubleshooting Flow Chart

Climate control does not operate (Blinking pattern "4")

Fig 6: Climate Control Does Not Operate (Blinking Pattern "4") Troubleshooting Flow Chart
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Fig 7: Inspecting Climate Control ECU - Seat Back Side
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Fig 8: Inspecting Climate Control ECU - Seat Cushion Side
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No cool air comes out, No warm air comes out

Fig 9: Troubleshooting Flow Chart
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