Where is the cabin air filter located in the Citroen C-Quatre?
2 Answers
The cabin air filter in the Citroen C-Quatre is located behind the insulation cotton in the engine compartment. After removing the three snap fasteners on top and taking off the insulation cotton, you will see the cabin air filter cover. The Citroen C-Quatre's cabin air filter should be replaced every 20,000 kilometers. If driving in harsh environments, it is recommended to shorten the replacement interval. The cabin air filter consists of two components for filtration effect, and both must be replaced together during maintenance. The function of the cabin air filter: To filter impurities from the air entering the vehicle cabin from outside, including microscopic particles, pollen, bacteria, industrial exhaust, dust, etc., thereby improving air cleanliness. It prevents these substances from entering and damaging the air conditioning system while providing a healthy air environment for passengers. Maintenance of the cabin air filter: If the filter is dirty, clean it by blowing compressed air from the reverse side. Hold the air gun about 5cm away from the filter and blow at 500kPa pressure for approximately 2 minutes. The cabin air filter easily accumulates dust; simply blow away loose dust with compressed air. Never wash it with water, as this will render it unusable. Poor maintenance of the cabin air filter will cause accumulation of dust and dirt on the filter plate, radiator, evaporator, and fin surfaces, leading to airflow blockage. This results in reduced cooling/heating efficiency, increased power consumption and noise, and shortened air conditioning system lifespan. Impact on drivers from not replacing the cabin air filter: Long-term use without replacement allows impurities on the filter to mold, producing bacteria and odors that endanger the health of drivers and passengers, potentially causing respiratory diseases. Impact on the engine from not replacing the cabin air filter: Severely clogged air filters increase intake resistance, reducing engine power and worsening engine performance. This leads to increased fuel consumption and accelerated engine wear and carbon buildup. Precautions for replacing the cabin air filter: Purchase cabin air filters from reputable manufacturers, carefully comparing appearance and dimensions. Replacement must be performed with the engine off. When removing screws and clips, apply appropriate force. Pay attention to the installation direction to avoid reverse mounting. After installation, verify proper positioning - the filtering surface must cover the entire air duct with tight seals to prevent filtration failure. Precautions for using car air conditioning: Do not immediately turn on the heating AC when warming up the car in the morning; wait until the engine coolant temperature rises. Avoid setting the AC temperature too high, as prolonged excessive heat may cause drowsiness while driving. Also avoid directing warm air at the face. If windows fog up after turning on the heater, increase fan speed and continue blowing until the fog disappears without recurrence. During long drives, ventilate periodically as stagnant air in enclosed spaces may cause breathing discomfort over time. Turn off the AC before parking and switch to external circulation with natural wind to clean the AC system ducts and prevent bacterial growth.
When I was driving the Citroen C-Quatre, the location of the cabin air filter was quite noticeable—it's right behind the glove compartment in front of the passenger seat. You need to open the glove box first, then release the small clips or unscrew the screws inside, remove the back panel of the glove box, and you can directly see the filter slot. I remember the first time I replaced it, I didn’t need any tools; it could be done by hand—the design is quite user-friendly. The filter is usually rectangular, so be careful to install it in the correct direction to avoid affecting the filtration efficiency. After replacing it, the air inside the car immediately felt much fresher, especially when using the AC in summer, reducing dust and odors entering the cabin. It’s recommended to check it once a year or every 10,000 kilometers. Regular replacement can extend the AC’s lifespan and prevent bacterial growth, which could affect health. The location isn’t complicated, so you can do it yourself—saving both money and hassle.
