Do Not Sell My Personal Information Jump to content

RX400h heating issues

Recommended Posts

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.

Link to comment
Share on other sites

  • 2 weeks later...

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.

  • Like 2
Link to comment
Share on other sites

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.  

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...