What causes uneven cooling and heating in BMW X5?
2 Answers
BMW X5 having uneven cooling and heating may be due to a problem with the heater water valve. Cleaning carbon deposits: Severe carbon deposits in a car can affect the circuit blockage, leading to non-compliant exhaust emissions. Therefore, it is necessary to regularly clean other parts of the car. Air filter: Prevents contaminated particles in the air from entering the car's cooling system, ensuring the normal operation of car components. After prolonged use, the air filter also needs regular cleaning. Cleaning the air filter can effectively avoid air pollutants, thus not affecting the car's performance and reducing pollutants and impurities in the exhaust emissions. Engine cleaning: To clean the car's engine, it should be taken to a professional maintenance facility. This not only reduces exhaust emissions but also provides maintenance for the car.
My BMW X5 has experienced the issue of blowing cold air on one side and hot air on the other, which is quite common, especially in vehicles with dual-zone climate control. Typically, the problem lies in the temperature zone control of the air conditioning system, such as when the temperature settings for the driver and passenger sides are different and the system fails to adjust properly. More commonly, it's caused by a stuck blend door actuator—that small component responsible for controlling the mix ratio of hot and cold air. If it gets stuck, one side will continuously blow hot air while the other side blows cold. It could also be due to a sensor malfunction, where the temperature probe under the seat provides inaccurate signals, leading the system to misjudge. I recommend first checking the air conditioning settings to ensure both sides are set to the same temperature, then visiting a professional shop to scan for trouble codes using a diagnostic tool. If you prefer DIY, listen for any clicking sounds from the actuator as a preliminary check.
