What is the reason for the alarm of BMW 7 Series body height adjustment function?

It is also a common reason that the sensor is damaged or its wiring problem prevents it from sensing the height of the vehicle body, so that it cannot send height information to EHC. Pump is not working properly: the pump is damaged or the relay is not working properly. Damaged gas pipe: For example, the gas pipe was bitten by a mouse, and there are many cases.

Tracheal wiring error: the gas springs on the left and right sides of the air correspond to their respective trachea. If the connection is incorrect, the height adjustment will be counterproductive. For example, the body height is 688 mm on the left and 7 15 mm on the right. EHC needs to increase the height of the left side, so the left side/

BMW body height adjustment related components include: EHC control unit, air supply device (air pump, air pipe, etc.). ).), air compressor, air dryer, valve body, EHC solenoid valve, EHC exhaust valve, 2 air springs and 2 height sensors. The BMW body has a standard height. Once it exceeds this range, such as 688 mm on the left and 7 15 mm on the right, the body height sensor will send information to EHC, who will control the air pump to inflate the air spring on the left until the body height on the left reaches 698-7 18 mm, and then stop inflating.

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