RX 450h Climate Control Issue
#1
Driver
Thread Starter
RX 450h Climate Control Issue
This is annoying and all my riders complain about the A/C Auto mode on this car.
Here is the issue in Auto Mode with the inside temp set at 72 degrees, and the outside temp is cold anywhere from 55 to 65 degrees the A/C always blows cold air into the car. I can never get heat to flow into the car. The manual says that auto controls the a/c flow, fan speed, and vents like auto in almost every car. What is wrong here? The A/C is always on blowing cold air regardless of the temperature set inside the car. To me it seems that the temperature setting for both passenger and driver do not work.
I traded my X5 in for this Lexus. I am not sure it was a smart thing. Lot's of little quirky things about this Lexus.
Comments?
Here is the issue in Auto Mode with the inside temp set at 72 degrees, and the outside temp is cold anywhere from 55 to 65 degrees the A/C always blows cold air into the car. I can never get heat to flow into the car. The manual says that auto controls the a/c flow, fan speed, and vents like auto in almost every car. What is wrong here? The A/C is always on blowing cold air regardless of the temperature set inside the car. To me it seems that the temperature setting for both passenger and driver do not work.
I traded my X5 in for this Lexus. I am not sure it was a smart thing. Lot's of little quirky things about this Lexus.
Comments?
#2
I would guess that the ICE is not used often enough to sufficiently heat up the heating radiator. Therefore you don't feel any heat.
Especially if you have the tow package with the heavy duty radiator?
Especially if you have the tow package with the heavy duty radiator?
#4
Racer
ICE = Internal Combustion Engine, aka the gas engine opposed to the electric motor(s) that are part of your hybrid. It's one of those acronyms you'll get used to here with the hybrid gang.
Last edited by BertL; 07-11-13 at 12:29 PM. Reason: Heading off the teachers out there... ICE does not need to be an adjective
#5
No, I don't play soccer!
Welcome to CL, RLM. A/C on all the time is the default setting. You can go in and change it but then you'll have to manually turn it back on. Raising the temperature is the best thing to do. Fan speed should increase as the engine warms up which does take longer. But there shouldn't be cold air blowing out of them. The other thing is the temperature also dictates which vents the air comes out of in auto mode - floor and windshield above around 75 and the center and windows lower than that IIRC. Finally there is the dual mode so your passenger can adjust their own temperature manually.
I fixed your little typo on the model number too
I fixed your little typo on the model number too
Last edited by kitlz; 07-11-13 at 01:07 PM.
#6
Lexus Champion
It would be nice if there was an AC button. But you have to go through the menus of the factory frustration (Navigation) system. There's a setting to enable auto-AC on. It doesn't do much.
Here's my vent thread (pun intended):
https://www.clublexus.com/forums/rx-...not-to-ac.html
Here's my vent thread (pun intended):
https://www.clublexus.com/forums/rx-...not-to-ac.html
#7
Racer
While I can't find anything specific in the RX manual about how the auto mode operates, to me it seems to have the same standard auto mode logic that I've seen in other Toyotas, in which it tries to make intelligent choices about how you feel, not blindly follow your temp settings. The auto mode in my Camry Hybrid was described to work as follows...
When you set the temp to 72F, the system will compensate for daylight and ambient temperature. At 60F outside, if it's a bright sunny day it can feel quite warm shining on you through the glass. The system will actually deliver cool air. At night under the same circumstances, the system will deliver warmer air as it knows you will not feel any warm from sunshine.
It doesn't always make the best choices so adjusting the temp is sometimes necessary to override. For example, the other day it was 29C outside (85F) on a bright sunny day. I turned the A/C into auto mode, but I had to turn the temp setting to 28C (83F) just to avoid a severe case of frostbite. Damn, winters in Canada are long enough, I don't need one inside my RX in July! I believe with less sunshine the system isn't so aggressive.
When you set the temp to 72F, the system will compensate for daylight and ambient temperature. At 60F outside, if it's a bright sunny day it can feel quite warm shining on you through the glass. The system will actually deliver cool air. At night under the same circumstances, the system will deliver warmer air as it knows you will not feel any warm from sunshine.
It doesn't always make the best choices so adjusting the temp is sometimes necessary to override. For example, the other day it was 29C outside (85F) on a bright sunny day. I turned the A/C into auto mode, but I had to turn the temp setting to 28C (83F) just to avoid a severe case of frostbite. Damn, winters in Canada are long enough, I don't need one inside my RX in July! I believe with less sunshine the system isn't so aggressive.
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#8
I've never had any temp problems in my 450h. The climate control system is very unobtrusive and seems to respond quickly to my minor temp changes. I can not remember one time where I felt there was cold air blowing on me. The system does run slightly differently in ECO vs non-ECO mode.
Last edited by UCSB; 07-11-13 at 07:11 PM.
#9
This is annoying and all my riders complain about the A/C Auto mode on this car.
Here is the issue in Auto Mode with the inside temp set at 72 degrees, and the outside temp is cold anywhere from 55 to 65 degrees the A/C always blows cold air into the car. I can never get heat to flow into the car. The manual says that auto controls the a/c flow, fan speed, and vents like auto in almost every car. What is wrong here? The A/C is always on blowing cold air regardless of the temperature set inside the car. To me it seems that the temperature setting for both passenger and driver do not work.
I traded my X5 in for this Lexus. I am not sure it was a smart thing. Lot's of little quirky things about this Lexus.
Comments?
Here is the issue in Auto Mode with the inside temp set at 72 degrees, and the outside temp is cold anywhere from 55 to 65 degrees the A/C always blows cold air into the car. I can never get heat to flow into the car. The manual says that auto controls the a/c flow, fan speed, and vents like auto in almost every car. What is wrong here? The A/C is always on blowing cold air regardless of the temperature set inside the car. To me it seems that the temperature setting for both passenger and driver do not work.
I traded my X5 in for this Lexus. I am not sure it was a smart thing. Lot's of little quirky things about this Lexus.
Comments?
#10
Lexus Champion
A quick way to fix the air-too-cold problem is to hit the recirculation button. It goes automatically into the recirculation mode virtually each time it turns on the AC. It's a very smart feature.
#11
Driver School Candidate
Join Date: Apr 2013
Location: ON
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I'm in Canada most days this winter has been -30 degrees F, I have a Lexus RX450h and have to turn off the ECO MODE off to get some heat. Thinking of going back to the RX 350.
#12
Lexus Champion
Keep in mind, this has been a record- setting winter. By the time you trade in, we may be back to mild winters.
Try the sport mode. I did that last time we got a blast from the north.
#13
This is annoying and all my riders complain about the A/C Auto mode on this car.
Here is the issue in Auto Mode with the inside temp set at 72 degrees, and the outside temp is cold anywhere from 55 to 65 degrees the A/C always blows cold air into the car. I can never get heat to flow into the car. The manual says that auto controls the a/c flow, fan speed, and vents like auto in almost every car. What is wrong here? The A/C is always on blowing cold air regardless of the temperature set inside the car. To me it seems that the temperature setting for both passenger and driver do not work.
Comments?
Here is the issue in Auto Mode with the inside temp set at 72 degrees, and the outside temp is cold anywhere from 55 to 65 degrees the A/C always blows cold air into the car. I can never get heat to flow into the car. The manual says that auto controls the a/c flow, fan speed, and vents like auto in almost every car. What is wrong here? The A/C is always on blowing cold air regardless of the temperature set inside the car. To me it seems that the temperature setting for both passenger and driver do not work.
Comments?
Last edited by Maertens; 05-11-14 at 09:45 AM.
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