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How long should air-compressor run ? when start engine


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every time when i start the engine, the air-compressor (for the air-suspension) runs for about 47 sec. is this normal ?

how long does your air-compressor run ?

i ask the Porsche Center, the service adviser tells me that, once the car stops, it will release some pressure in the system.
when start the engine, it will re-charge the pressure to certain level, and that is normal to have the air-compressor run for a while.
i am skeptical. is it true ?

Please tell how long your air-compressor runs, so that we have some numbers here. thx.

Vehicle = Cayenne V6, 3.6L, year 2007

Edited by boonewe
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