Heater blows cold air sporadically and previously working
What is your question?
Last couple months a couple times I had heat on and noticed cool air blowing out. Today heat went on then went cool pretty quickly and sporadically went back to heat. Dealer said coolant leading from radiator and to replace it including hoses is $1250. Thermostat is $600.
What makes this problem better or worse?
nothing
How long has your 2007 Lexus RX400h had this problem?
RepairPal Certified shops can diagnose and repair your 2007 Lexus RX400h. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Hello, it's possible that you could have a leak, you could have an air pocket in the cooling system, and you could have an engine that is not maintaining proper operating temperature, leading to a lack of proper heating in the vehicle.
Whereas it is important to fix what is "known" to be failing prior to further speculation, it is also possible that you could have a temperature control issue inside the vehicle.
Certainly, if you have a lack of confidence in the diagnosis, get a second opinion! Even consult a local non-dealership repair shop near you for an independent assessment.
Indeed, if coolant is leaking, that's a serious issue that needs addressed. It would remain to be seen if further issues are also present.
