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I work with heavy trucks that do have these systems on, and it is known as certain as tires will wear out, that the parts on this suspension will. Of course, salt and cold speeds up the aging.
A steel suspension consist of a steel spring. An air suspension consists of a compressor, pipes and hoses leading the air, airbags made out of rubber, valves everywhere and then lots of electronics monitoring this. Any of these parts can fail.
My friends Mercedes Viano started leaking at about just 2 years old. When I bought my F15, it was very important to me that the car did not have air suspension. I like driving in the wilderness and last thing I need is a blown airbag out there.
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