
has a brake pad wear reminder, which will alert when the brake pads reach their limit. The relevant introduction of BMW is as follows: Brand Introduction: BMW (abbreviated as BMW) is a German automobile brand under the BMW Group. It has four model series: i, X, Z, and pure numbers, as well as series like 2 and 3, and the M series (BMW's official high-performance modification department) based on improvements to each series. Logo Meaning: The B.M.W. in the BMW logo stands for Bavarian Motor Works, and the colors and combination of the logo come from the coat of arms of Bavaria, where BMW is located.

has designed electronic sensors on the brake pads that send a signal through the vehicle's circuit to illuminate a warning light on the dashboard when wear reaches the limit. The sensors, typically copper wires or resistive elements embedded within the brake pad material, gradually wear down with use. Once the contact point is exposed and the circuit is completed, the alarm is triggered. The system is integrated into the iDrive control unit, and some newer models can even display maintenance prompts, including mileage estimates, on the central screen. The principle is simple: it detects whether the circuit is open or shorted to issue a reminder. However, sensors may sometimes fail due to dirt or false alarms, so regular visual inspection of brake pad thickness is more reliable. Use a ruler or specialized tool to measure the thickness and ensure it remains within the safe range to avoid accidents.


