Middle Left Air Vent Blows Cold
Thread Starter
2nd gear
Joined: Nov 2022
Posts: 2
Likes: 0
From: California
Middle Left Air Vent Blows Cold
Hi everyone,
With winter getting closer, I've noticed that the middle left air vent blows cold air (AC and recirculation is off) when I set my temp to High (I shut the furthest left vent off and my I put my phone mount there so I don't know if that one blows cold or not). My dual climate control is off so both driver and passenger temps are set to High but only the passenger side gets warm. I tried using the forums but couldn't find an answer (the search engine is confusing to me, sorry..). I'm hoping someone could help me find a solution to my problem, thank you!
With winter getting closer, I've noticed that the middle left air vent blows cold air (AC and recirculation is off) when I set my temp to High (I shut the furthest left vent off and my I put my phone mount there so I don't know if that one blows cold or not). My dual climate control is off so both driver and passenger temps are set to High but only the passenger side gets warm. I tried using the forums but couldn't find an answer (the search engine is confusing to me, sorry..). I'm hoping someone could help me find a solution to my problem, thank you!
Lead Lap
Joined: Nov 2019
Posts: 3,689
Likes: 1,101
From: Michigan
Hello,
Sounds like an issue with the Driver Side temp control servo, located on the HVAC unit under the dash. It should be somewhere close to the Accelerator pedal, try turning the Climate Control from Max Cold to Max Hot while watching the servo to see if there will be any response.
Other than that, you can also enter the Diagnostics mode for the Climate Control to look for any codes and also check each Servo operation, here you can find more information on how to do it.
Hope this helps and best of luck!
Sounds like an issue with the Driver Side temp control servo, located on the HVAC unit under the dash. It should be somewhere close to the Accelerator pedal, try turning the Climate Control from Max Cold to Max Hot while watching the servo to see if there will be any response.
Other than that, you can also enter the Diagnostics mode for the Climate Control to look for any codes and also check each Servo operation, here you can find more information on how to do it.
Hope this helps and best of luck!
Thread Starter
2nd gear
Joined: Nov 2022
Posts: 2
Likes: 0
From: California
Hello,
Sounds like an issue with the Driver Side temp control servo, located on the HVAC unit under the dash. It should be somewhere close to the Accelerator pedal, try turning the Climate Control from Max Cold to Max Hot while watching the servo to see if there will be any response.
Other than that, you can also enter the Diagnostics mode for the Climate Control to look for any codes and also check each Servo operation, here you can find more information on how to do it.
Hope this helps and best of luck!
Sounds like an issue with the Driver Side temp control servo, located on the HVAC unit under the dash. It should be somewhere close to the Accelerator pedal, try turning the Climate Control from Max Cold to Max Hot while watching the servo to see if there will be any response.
Other than that, you can also enter the Diagnostics mode for the Climate Control to look for any codes and also check each Servo operation, here you can find more information on how to do it.
Hope this helps and best of luck!
Lead Lap
Joined: Nov 2019
Posts: 3,689
Likes: 1,101
From: Michigan
Codes 21 and 24 are essentially the same, they are for a Driver and Passenger side Solar Sensor, even though they both draw their signal from one sensor.. Those codes will always pop up in a dark environment, just shine some light on the sensor pull the ECU-IG fuse to reset the codes.
Codes 36 and 46 are more interesting however, they are for the Driver's side airmix servo Position Sensor and Motor Circuit. All that likely means an issue with the servo as I wrote earlier. Try taking it out and then adjusting the temperature with the servo connected to see if it will spin, if not, you can try taking it apart and giving it a good clean as it is described in the video below. If none of that would help, you will have to find a replacement servo, a junkyard would be the quickest and easiest option.
Hope this helps and best of luck!
Codes 36 and 46 are more interesting however, they are for the Driver's side airmix servo Position Sensor and Motor Circuit. All that likely means an issue with the servo as I wrote earlier. Try taking it out and then adjusting the temperature with the servo connected to see if it will spin, if not, you can try taking it apart and giving it a good clean as it is described in the video below. If none of that would help, you will have to find a replacement servo, a junkyard would be the quickest and easiest option.
Hope this helps and best of luck!
Lexus Champion
Joined: Apr 2019
Posts: 11,126
Likes: 1,560
From: FL
Good info Arseni.
For anyone needing the servos they can be found on fleabay dirt cheap but they are aftermarket so I can't gurantee fitment or quality until someone tries them and posts results for us.
For anyone needing the servos they can be found on fleabay dirt cheap but they are aftermarket so I can't gurantee fitment or quality until someone tries them and posts results for us.
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