
Located below the left side of the glove box on the passenger seat. Below is the relevant introduction of 740: 1. Positioning: The BMW 740Li is a high-end luxury sedan produced by the German BMW company. It belongs to the "BMW 7 Series" and is only produced in Germany. 2. Power: The new 740Li is equipped with a 4.0-liter V8 engine, upgraded from the previous 3.6-liter V8 engine. In addition to BMW's Double-VANOS dual camshaft variable valve timing system, the new engine also adopts the steplessly adjustable Valvetronic electronic valve drive mechanism, significantly reducing fuel consumption and emissions.

I often tinker with BMWs and find the rear air conditioning filter location on the 740 quite hidden, usually tucked under the rear seats or near the sidewall of the trunk. Specifically, you'll need to flip up the rear seat or remove the carpet to discover a small plastic cover. Removing it reveals the filter. I've changed it once myself—pretty straightforward, but avoid forcing it to prevent damaging the clips. Regular cleaning is crucial because dust buildup affects rear airflow efficiency and can breed bacteria. I recommend checking and replacing it every 1-2 years to ensure passengers in the back breathe more comfortably.

Last time when helping my cousin with her 740, I noticed the rear air conditioning filter is located right under the back seat. You can find it by lifting the carpet or the edge of the seat. Don't rush, take your time, or refer to the owner's manual illustrations for more precise guidance. If you're doing it yourself, a small screwdriver is all you need, but be careful not to miss any parts. When the filter is clogged with dust, the cooling effect weakens. Replacing it promptly ensures better cooling for the rear passengers, especially important for older vehicles.

After checking the rear air conditioning system of the 740, the filter location is typically set at the rear of the cabin, such as directly under the rear seats or near the wheel arches in the trunk. Removing the cover provides access, and using genuine filters during replacement prevents leaks. This design considers independent temperature control for the rear seats. Lack of maintenance can increase system load, so it's recommended to address it during regular service intervals to reduce the risk of malfunctions.

I've been driving the 740 for many years and found that the rear air conditioning filter is usually located under the rear seat, making it easy to check by opening the cover. It's recommended not to force dismantle it at home; instead, contact a professional or visit a 4S shop for accurate positioning and replacement. A new filter improves air freshness and is safer for children and the elderly, helping to avoid allergy issues.

In forum discussions with fellow car enthusiasts, it's commonly mentioned that the rear air conditioning filter for the 740 is located under the rear seat area, and can be easily found by reaching and feeling around. The first time I replaced it myself, it took about half an hour of searching, but after removal, the rear air conditioning noticeably improved in airflow. Regular maintenance ensures comfort in the rear seats, especially indispensable during long trips.


