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2003 Lexus GS430 Question: Car is stuck on defrost. Won't blow heat or air The two middle vents don't work.

 

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lrobinson221, 4.3L V8, Chicago, IL, September 12, 2011, 17:59
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Please help

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  • Answer #1

    patrick mannion from Greg Solow's Engine Room, September 12, 2011, 19:34
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    A Lexus Scan tool and some professional grade scan tools have the capability to read trouble codes and carry out diagnostics on the heating/climate control on your car. The system uses servo motors, electronic control unit, and a controller. Hard to guess what wrong without being able to carry out tests on the system.

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