2009 LX 570- Today, when I turned the heat on, it would only heat on the front left (Driver’s side). The front right and both back sides were all cold, no matter what I did. It seems odd for all the dampers to go out at once. The HVAC codes were: 41, 45, 47, 58, 86. To me it seems like some electrical relay or control unit is out, rather than multiple servos all die at once. Where would you start? Thoughts? Where is the control unit? Thanks in advance!
Driver/Passenger Heat Baffle Issue
- Thread starter m1c498
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- Thread starter
- #2
Current codes all at once
First, check operation of the door that changes the HVAC from fresh to recirculate. That door often gets damaged by someone forcing it open to change the cabin air filter. The correct way to access the cabin air filter is to put the HVAC into RECIRC. That opens the change door. If the door is broken or not able to operate properly (Sometimes a filter is installed wrong and jams the door), the HVAC can do weird things like your experiencing.
If the door is not broken and is working properly, search on here for the HVAC servo reset procedure.
If the door is not broken and is working properly, search on here for the HVAC servo reset procedure.
- Thread starter
- #4
The HVAC recirculate door is working properly. I will search for HVAC servo reset. Thanks! Update to follow