BMW 730d Rear Air Spring or Air Line Failure
Rear air springs and the air lines connecting them to the compressor are common failure points on E65/E66. The air lines run under the car and are susceptible to physical damage and corrosion. A leak causes the rear to sag progressively or overnight. The SLS compressor runs continuously to compensate before eventually overheating and burning out.
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No commonly reported misdiagnoses for this fault yet. If you have replaced a part that did not fix this BMW 7 Series 2002 problem, submit a wrong diagnosis report — it helps other drivers avoid the same costly mistake.
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