
If the side of your BMW armrest box is overheating, you should inspect the insulation layer under the chassis. Here is an extended introduction to the issue: 1. Improvements in Armrest Boxes: The armrest box industry is currently diversifying, with various forms and purposes of armrest boxes emerging continuously. The main improvements focus on: adding USB charging ports, installing cigarette lighter devices, adding air conditioning vents, installing height-adjustment devices, and incorporating audio equipment. 2. Introduction to Original Armrest Boxes: Compared to original armrest boxes, those manufactured by various companies are more practical and convenient, with relatively lower market prices. The right-side armrest box is one such design, and the central armrest's various functions are still being continuously improved. 3. Leather Craft Armrest Boxes: With the popularity of family cars and increasing demands for the artistic effects of car interiors, as well as higher requirements for functionality and environmental practicality, leather craft armrest boxes have seen unprecedented development.

I also experienced the issue of the side of the armrest box in my BMW getting hot recently. At first, I thought it was due to my phone charging cable, but after checking, I found it was caused by aging and short-circuiting of the USB cable, leading to heat buildup. The design of BMW's armrest box in some models has poor ventilation, which is especially noticeable in summer. I recommend stopping the car immediately, turning off the engine, and feeling the hot area. Unplug all connected devices to test. If it still feels hot, it might be an electrical fault, such as a short circuit or a burnt plug. Don’t ignore this to prevent a potential fire. I solved the issue by replacing the cable at a repair shop, which wasn’t too expensive but requires professional handling. During regular maintenance, always ask the technician to check the armrest box area to avoid similar hazards.

As a mechanic who frequently works with BMW models, I have to say that side heating of the center armrest is quite common, mostly caused by abnormal current in internal electrical components such as USB sockets or poor heat dissipation from the exhaust pipe. While driving, exhaust heat may transfer to the armrest area, especially in older models with worn insulation materials. The inspection method is simple: start the car and observe the heating situation. If the heat source comes from the bottom of the armrest, check the wiring fuses or insulation layer. I recommend finding a safe place to park, initially using a thermometer (or your finger if unavailable) to locate the hot spot, and avoid forcing the car to run. Most cases are minor issues, but delayed handling can lead to fire risks. Just take it to a 4S shop for a circuit check.

When driving with family, don't ignore a heated armrest box. I've encountered this issue with BMW - the heat source is often minor short circuits or battery thermal conduction. For safety, immediately pull over to ensure personal safety, then open doors for ventilation. Check if it's caused by sun exposure or recent parking in high-temperature environments. If it's electrical-related (e.g., overheating charging port), unplug devices and wait to cool before driving. Persistent heating indicates wiring faults requiring professional repair - don't skimp on this. Last time I discovered it, I went straight to BMW dealership where technicians diagnosed it as aged wiring and fixed it immediately for peace of mind.


