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Heater Not Blowing Hot Air


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Hi,

Just wondering if is normal when I set my temperature to like 28+ and it is still blowing cool air. The air that blows out is not hot at all. Can I know what would have cause it and also how much roughly would it cost to fix it?

Thanks

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you have to give it time to heat up before it will start blowing hot air. for temp 28 it cant just blow 28. it has to heat up the heater before it can blow any heat out. have you given it a chance?

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  • 4 months later...

is not heating up at all. drove for like 30 minutes and is still blowing cold air.

I for one believe you; did you ever get it sorted out?

I have a similar problem with our RX-350 this winter in Brisbane, coldest for last 11 years - there is a good flow of hot air from both passenger sides outlets, the rear outlets but both driver side outlets are still cool. This is with putting both the individual temperature up to MAX of 32 degrees.

Service center tried to blow me off with some BS about the position of the heater, farther away, crikey, you can tell the difference by feel, I mean one side is really HOT and drivers side is cool, absolutely no heat at all, and the center outlets are side by side so don't buy that distance crap. So they said they tested another vehicle but it was the same, maybe something to do with perhaps it was designed for the driver on the other side? WTF, must be a design fault then, I reckon.

Pay $111,000 for a vehicle and you can't even get HEAT even though it has individual climate controls??? I grew up in Canada and cars in the 60's had better heaters for sure, where is the technology gone wrong here?

Thanks, rant over....

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Hi,

Is ok to rant it out cos we do need cry out loud once in a while. As for my car, it was fixed and the problem is just that the temperature switch was stuck and thus it was unable to switch to heater. Got a guy who specialised in fixing car aircon to help me.

If you still need someone to have a look at your car aircon, I can pass you the number of the person who fixed my car.

Thanks

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Hi,

Is ok to rant it out cos we do need cry out loud once in a while. As for my car, it was fixed and the problem is just that the temperature switch was stuck and thus it was unable to switch to heater. Got a guy who specialised in fixing car aircon to help me.

If you still need someone to have a look at your car aircon, I can pass you the number of the person who fixed my car.

Thanks

Well, that's what I thought it would be something as simple as the signal not switching the valve to allow hot water in the heater core or not opening the air flow the right way, but as long as the dealer / Lexus is footing the bill for all this warranty work, I don't mind.

What I would really like is to see the difference in the parts, or at least a logical, plain English explanation but as I will be overseas for awhile, looks like my wife will be taking it in for the repairs and probably won't get details like tht from them; be interesting to see the service sheet if they give us a copy however.

Thanks for response, so many RX-350 readers looking at this and no one has even said if there heater is working properly yet, come on guys, it is a forum, share any information! :)

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Hi,

Is ok to rant it out cos we do need cry out loud once in a while. As for my car, it was fixed and the problem is just that the temperature switch was stuck and thus it was unable to switch to heater. Got a guy who specialised in fixing car aircon to help me.

If you still need someone to have a look at your car aircon, I can pass you the number of the person who fixed my car.

Thanks

Well, that's what I thought it would be something as simple as the signal not switching the valve to allow hot water in the heater core or not opening the air flow the right way, but as long as the dealer / Lexus is footing the bill for all this warranty work, I don't mind.

What I would really like is to see the difference in the parts, or at least a logical, plain English explanation but as I will be overseas for awhile, looks like my wife will be taking it in for the repairs and probably won't get details like tht from them; be interesting to see the service sheet if they give us a copy however.

Thanks for response, so many RX-350 readers looking at this and no one has even said if there heater is working properly yet, come on guys, it is a forum, share any information! :)

If this is on facebook, I would definitely like what you wrote. Thanks for your post anyway.

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Hi,

Is ok to rant it out cos we do need cry out loud once in a while. As for my car, it was fixed and the problem is just that the temperature switch was stuck and thus it was unable to switch to heater. Got a guy who specialised in fixing car aircon to help me.

If you still need someone to have a look at your car aircon, I can pass you the number of the person who fixed my car.

Thanks

Well, that's what I thought it would be something as simple as the signal not switching the valve to allow hot water in the heater core or not opening the air flow the right way, but as long as the dealer / Lexus is footing the bill for all this warranty work, I don't mind.

What I would really like is to see the difference in the parts, or at least a logical, plain English explanation but as I will be overseas for awhile, looks like my wife will be taking it in for the repairs and probably won't get details like tht from them; be interesting to see the service sheet if they give us a copy however.

Thanks for response, so many RX-350 readers looking at this and no one has even said if there heater is working properly yet, come on guys, it is a forum, share any information! :)

If this is on facebook, I would definitely like what you wrote. Thanks for your post anyway.

Oops, when I made that last post, I thought I was in the thread about this over on the RX-350 section = Heater not HOT threrad

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Hi,

Is ok to rant it out cos we do need cry out loud once in a while. As for my car, it was fixed and the problem is just that the temperature switch was stuck and thus it was unable to switch to heater. Got a guy who specialised in fixing car aircon to help me.

If you still need someone to have a look at your car aircon, I can pass you the number of the person who fixed my car.

Thanks

Well, that's what I thought it would be something as simple as the signal not switching the valve to allow hot water in the heater core or not opening the air flow the right way, but as long as the dealer / Lexus is footing the bill for all this warranty work, I don't mind.

What I would really like is to see the difference in the parts, or at least a logical, plain English explanation but as I will be overseas for awhile, looks like my wife will be taking it in for the repairs and probably won't get details like tht from them; be interesting to see the service sheet if they give us a copy however.

Thanks for response, so many RX-350 readers looking at this and no one has even said if there heater is working properly yet, come on guys, it is a forum, share any information! :)

iv never had a issue with our rx350

my heater is warm even when the temp is just on C

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  • 9 months later...

Hi, I have the same problem. Did you find an answer to the heater not heating? I think it is in the settings as we got to work once yesterday but cannot duplicate.

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Found I had to set the temp tp 30 deg C initially to start to get warm air, but then could reduce it to say 25 after the car got warmed up. I had the controls set to AUTO to handle the MODE and FAN. This worked for me.

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