Awesome job! Question for Prius V 2014 (3rd Gen), I am having an issue where the AC vent circulates strong airflow from the center vents in the morning; however, in the afternoon, when the ambient temperature is 80+ Degrees, the airflow drops while continuing to produce cold air.
Thanks. Unfortunately I don't know the Prius automatic AC to this depth. In addition, the operating algorithm of the AC is usually different in almost every type of car. I took on the job in the video for a friend of mine because he complained that none of the garages wanted to help him. They all sent him away saying it was a very, very complicated job. I don't think so much. There's just a lot of manual work, but I wouldn't call it difficult. While I was at it, I replaced some capacitors in the instrument cluster, because the display had gone dark in the cold. That wasn't difficult either, but unfortunately I didn't take a video of that.
Nice work! I am having issues on my 2015 Prius c where it has intermittent issue with the temperature whenever i set it Hot and bring it back down to Low for cold it’ll still blow Hot air. Sometimes when the car restarts or if I reset the battery it’ll fix itself but I’m wondering if I am having the same issue as your friend vehicle? The other issue I am having is when I change the mode from blowing from the front to foot and front the center vents won’t blow sometimes. It’ll only work on the foot and side vents.
Thank you! As you described, there are two issues with the heating system. The temperature of the incoming air is set by another flap and motor, the "Air mix servo dumper" shown at 12:14. This drive has a similar structure to the "Air damp servo drive" that I take apart at 13:44 and it usually has the same problem, i.e. the grease hardens in it has contacts error. To fix the temperature control, this servo drive should be replaced or cleaned. The other problem is that the mode change doesn't work properly, it's the same as what happened to my friend's car and what the video is talking about. Be careful, the servo drives are not identical, their order numbers are also different. A potentiometer rotates in the air mix servo, which can also be cleaned with a potentiometer cleaning and lubricating spray. Lubrication is also important here so that it does not wear.
thank you very much for the video and input. Much appreciated. I’ve been looking for videos like this but couldn’t find much till I ran into yours and it is very helpful. Thanks for the contribution
@@ken-niffk5213 I usually use contact cleaner (Würth or CRC) or if the dirt stronger then WD40 for cleaning. Probably the best solution would be a professional potentiometer cleaner and lubricant, in my workshop a fine instrument oil was the best option for lubrication. Unfortunately, WD40 dries out quickly, so it is not good to use it for the long term.
If you replace or clean the Servo Sub Assy Dumper for Mode, recommended to replace or clean the Air Mix Servo Sub Assy Damper too (12:14). Some photos of what the potentiometer of this servo drive looked like in this car. th-cam.com/video/HO2LlP27CiQ/w-d-xo.html
Awesome job!
Question for Prius V 2014 (3rd Gen), I am having an issue where the AC vent circulates strong airflow from the center vents in the morning; however, in the afternoon, when the ambient temperature is 80+ Degrees, the airflow drops while continuing to produce cold air.
Thanks. Unfortunately I don't know the Prius automatic AC to this depth. In addition, the operating algorithm of the AC is usually different in almost every type of car.
I took on the job in the video for a friend of mine because he complained that none of the garages wanted to help him. They all sent him away saying it was a very, very complicated job. I don't think so much. There's just a lot of manual work, but I wouldn't call it difficult. While I was at it, I replaced some capacitors in the instrument cluster, because the display had gone dark in the cold. That wasn't difficult either, but unfortunately I didn't take a video of that.
Nice work! I am having issues on my 2015 Prius c where it has intermittent issue with the temperature whenever i set it Hot and bring it back down to Low for cold it’ll still blow Hot air. Sometimes when the car restarts or if I reset the battery it’ll fix itself but I’m wondering if I am having the same issue as your friend vehicle? The other issue I am having is when I change the mode from blowing from the front to foot and front the center vents won’t blow sometimes. It’ll only work on the foot and side vents.
Thank you! As you described, there are two issues with the heating system. The temperature of the incoming air is set by another flap and motor, the "Air mix servo dumper" shown at 12:14. This drive has a similar structure to the "Air damp servo drive" that I take apart at 13:44 and it usually has the same problem, i.e. the grease hardens in it has contacts error. To fix the temperature control, this servo drive should be replaced or cleaned. The other problem is that the mode change doesn't work properly, it's the same as what happened to my friend's car and what the video is talking about.
Be careful, the servo drives are not identical, their order numbers are also different. A potentiometer rotates in the air mix servo, which can also be cleaned with a potentiometer cleaning and lubricating spray. Lubrication is also important here so that it does not wear.
thank you very much for the video and input. Much appreciated. I’ve been looking for videos like this but couldn’t find much till I ran into yours and it is very helpful. Thanks for the contribution
@@mcelec7603by the way. What type of cleaning spray or lubricant did you use?
@@ken-niffk5213 I usually use contact cleaner (Würth or CRC) or if the dirt stronger then WD40 for cleaning. Probably the best solution would be a professional potentiometer cleaner and lubricant, in my workshop a fine instrument oil was the best option for lubrication. Unfortunately, WD40 dries out quickly, so it is not good to use it for the long term.
Some photos from the air mix servo dumper condition.
th-cam.com/video/HO2LlP27CiQ/w-d-xo.html
If you replace or clean the Servo Sub Assy Dumper for Mode, recommended to replace or clean the Air Mix Servo Sub Assy Damper too (12:14).
Some photos of what the potentiometer of this servo drive looked like in this car. th-cam.com/video/HO2LlP27CiQ/w-d-xo.html