My heater doesn't work except setting at high level? What give?
Driver
Joined: Apr 2009
Posts: 117
Likes: 1
From: CA
are you talking about the fan only working at certain switch positions (lo, med, hi). If so, Its a blower motor/switch issue. This is common in many vehicles as they age. Usually about $75 to fix at your local mechanic
Thread Starter
Driver School Candidate
Joined: Sep 2003
Posts: 6
Likes: 0
From: Oregon
We had lexus dealership changing the coolant for us...also, there was no 'switch' to turn the fan, 04' rx330 had touch screen control for everything so the fan has nothing to do with it, it will work according to the speed, but what I am talking about is the 'heat' that come out from the vent, it will just come out cold air until I set the temperature to 'max hot' then the heat will come out...
CL Community Team
Joined: Apr 2001
Posts: 16,583
Likes: 1,397
From: Austin, TX
There can be different reasons for this problem
1. fan speed [controlled by screen or ****], or automatically when in auto mode. There is an indication on display how high the fan speed is.
2. failure of heated-up coolant [to get hot air, you need to wait till the engine temp warms up to "normal"] to get into the heat-exchanger.
3. air flow which is based on fan, dampers/diverters and also the cabin filter.
The hints you got here cover 1 [hesham1] & 2 [mine].
You can save the trip to the dealer by making sure that there is no air in the coolant circuit. We recently talked about it in the thread you started
https://www.clublexus.com/forums/rx-...not-works.html
It must have not worked for you.
I suggest take your RX to the dealer and let them fix it for you for free ... I assume your problem happened after the coolant replacement.
Salim
1. fan speed [controlled by screen or ****], or automatically when in auto mode. There is an indication on display how high the fan speed is.
2. failure of heated-up coolant [to get hot air, you need to wait till the engine temp warms up to "normal"] to get into the heat-exchanger.
3. air flow which is based on fan, dampers/diverters and also the cabin filter.
The hints you got here cover 1 [hesham1] & 2 [mine].
You can save the trip to the dealer by making sure that there is no air in the coolant circuit. We recently talked about it in the thread you started
https://www.clublexus.com/forums/rx-...not-works.html
It must have not worked for you.
I suggest take your RX to the dealer and let them fix it for you for free ... I assume your problem happened after the coolant replacement.
Salim
Last edited by salimshah; Apr 28, 2009 at 10:30 PM.
CL Community Team
Joined: Feb 2001
Posts: 3,875
Likes: 396
From: Ohio
I had a heater problem in my '04 RX which turned into an intermittent overheating problem. It seemed like a bad thermostat to me, but the dealer found that the radiator was leaking. My car was still under CPO warranty, but I was informed that there was a bad batch of radiators in some '04 cars, and Lexus would replace them for free, warranty or not (and Lexus probably gets reimbursed by the radiator supplier). It's pretty unusual for any radiator to go out, especially after only a few years, and especially in a luxury car like this, but they made it right with the free new radiator. Also: I had no signs of leaking in the driveway or parking areas, so the leak was not major, and probably only under pressure, but the heat needle would go up almost to the top of the hot end and then slowly go back down. After the second or third time this happened, I was off to the shop immediately with no appointment and a good result.
Or it could be your thermostat.
Or it could be your thermostat.
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chroniekon
RX - 2nd Gen (2004-2009)
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Jun 26, 2012 10:37 PM
