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I found that when the air bags wear out, it's not really a hole per se, the bag it literally worn out and a whole area will become porous. When you spray the bag with soapy water, it may not just bubble up in one spot like it would with an obvious hole, it will kinda foam up in the area that has become porous.
How are you resetting the inactive warning? do you have DIS? If so, that will tell you why the message came on in the first place. Then you need to run through the test plans. It should have a test plan already loaded from the error. It tests compressor, Accumulator fill and vent and a few others if I remember correctly.
You can also test individual components.
Intermittent issues like you are having can be very frustrating. Our 4.8 has had the inactive warning for about 6 months. DIS reports that the error is an accumulator fill error. After extensive testing by me and BMW, we all *think* that the compressor may be weak but we're not willing to spend $500 to find out so I live with the error on the dash. All of the air bags have been replaced as they failed one right after the other.
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09-13-2012, 10:47 AM
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