What is the fault indicated by the up and down arrows on the BMW X6?

[SanGrace]

BMW X6 up and down arrows indicate a fault in the vehicle height adjustment system. In the controller, navigate to the vehicle status, vehicle information, and enter the triangle symbol at the bottom to view detailed information. Components: Parts related to BMW's vehicle height adjustment system include: EHC control unit, air supply device (air pump, air hoses, etc.), air compressor, air dryer, valve body, EHC solenoid valve, EHC exhaust valve, 2 air springs, and 2 height sensors. Brief principle: The BMW vehicle height is detected by height sensors installed on both sides of the rear axle. The EHC control unit obtains the height information of the left and right sides of the vehicle from the two height sensors and then automatically adjusts it based on various conditions such as vehicle speed and road conditions. Causes of failure: Sensor damage or wiring issues that prevent the detection of vehicle height, thereby failing to send height information to the EHC, is a relatively common cause.