cb12250 Posted February 14, 2021 Share Posted February 14, 2021 I have a 2007 RX400H and has now started to quit heating - periodically. It heats for a while then just starts to blow cold air. I have found some things on the UK site, but wondering if this is an issue in N.A. as well. Since it is -5 or better here heat is a bit important in my car at the moment. The fan blows great, and I have no other issues, and I have had heater cores go out in other cars and that is not the case. Any ideas are welcome. Quote Link to comment Share on other sites More sharing options...
Lexus_repair Posted February 24, 2021 Share Posted February 24, 2021 Have you tried alternating (on/off) the "auto" feature? Does it affect the heat? When was the last time your heating system coil was flushed? There is a temperature control valve also. If you don't want to go to a Lexus dealer, find a good local independent mechanic. 2 Quote Link to comment Share on other sites More sharing options...
cb12250 Posted February 26, 2021 Author Share Posted February 26, 2021 I have done that. I usually use the Auto function - much easier in my mind. When the temperature was below 0 is when the issue happens the most. I drove today and it heated but not like it uses to. I am making an appointment with my local mechanic for a full service on it. Are there specific things I should ask them to look at? Something a bit specific would be better for a female to ask a mechanic. I get the brush off a bit with cars and women around here. Quote Link to comment Share on other sites More sharing options...
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