Mercedes w221 airmatic issue

Question by borisyonka posted 6 months 2 weeks ago in S-Class

After change airmatic pump car lift up. But when i drive slowly in trafic compressor does not turn on and i get malfunction on dash, if i drive like 30mph compressor turn on and car lifts. Compressor is new, no leaks from whole system ( checked) but still malfunctioning ? faulty ecu or the valve body where all hoses are going to ?