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Why is one side of the Highlander's air conditioning cold while the other side is hot?

2 Answers

SophiaFitz

07/29/25 3:11am

The Highlander's air conditioning being cold on one side and hot on the other is due to a malfunction in the air conditioning system. Here are some related details about air conditioning: 1. Definition of air conditioning zones: Based on load analysis, the entire air conditioning area is divided into several temperature control zones according to the differences in air conditioning loads. The purpose of zoning is to enable the air conditioning system to effectively track load changes, thereby improving indoor thermal environments and reducing air conditioning energy consumption. 2. Function of car air conditioning: It can cool, heat, ventilate, and purify the air inside the car, providing a comfortable environment for passengers and reducing driver fatigue, thereby improving driving safety. It generally includes refrigeration devices, heating devices, and ventilation devices.

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BriellaDella

08/12/25 7:04am

I've encountered this situation many times during car repairs. The issue of one side of the Highlander's AC blowing cold while the other side blows hot is mainly caused by a stuck blend door or faulty position sensor. The blend door is responsible for adjusting temperatures on different sides - if it gets jammed by dust or wears out, the system can't balance hot and cold airflow distribution. Another common cause is uneven refrigerant distribution, such as a leak in the left-side piping which would make that side blow hot air. Control module failures can also trigger this problem, like circuit board issues messing up temperature settings. I must remind you that while this seems minor, leaving it unfixed long-term can affect the AC's lifespan and even damage the compressor. Don't attempt DIY disassembly - it's best to have it checked at a professional repair shop. Their diagnostic tools can quickly identify the root cause, allowing timely treatment to avoid costly repairs later. Regular maintenance like cleaning the AC filter can prevent similar faults.

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