Check the temp at your heater hoses. if one is hot and one is cold it means your heater core is plugged
well, the mixer is a possible cause, maybe you need to ensure that the a/c switch is turned off ( the compressor is not working during heating the cabin room )...i wish this could help.
Heater blows cold. Eng Coolant temp is normal. Some suggeted the air mixer is not responding to the comands
2000 Lexus RX
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Maintenance & Repair
We changed the ignition on my Lexus RX300 and now my car wont start what can I do?
2001 Lexus RX
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Maintenance & Repair
My Lexus rx300 53 plate has died I have lights and dash but no power tried to jump start but nothing plz help asap
2003 Lexus RX 300 FWD
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Maintenance & Repair
Ive got 99 Lexus rx300 replaced motor in 10/2015 was breaking it in when I was shipped off for lil over a year now back need to be back on road after checking everything over tried to crank an no ...
1999 Lexus RX
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Maintenance & Repair
I have 200,000 miles on my Lexus RX300 2001. Sometimes lately when my engine is running I hear a small bell ringing like sound, but nothing happens. I have never heard this for 20 years. Today ...
2001 Lexus RX 300 AWD
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Maintenance & Repair
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