sweAudiQ7

I removed black battery cable and charged it to make sure its not battery

Hello, i recently bought an Audi Q7 from 2008 and i have this weird problem with the air suspension… The air suspension light Will most of the time come on but not always, maybe 95% of the time its blinking but sometime it dosen’t show neither any problems with selecting which height, i ran an OBD fault code today but no fault code at all came on. Thanks in advance