The Dynamic seats in The 2007 S600 are not holding air.
They work for maybe 5 minutes and then deflate.
When trying to adjust manually the number on each quadrant goes up then drops back to 0 immediately.
The Air pump was replaced and still not working?
Have same problem on my S420cdi (take at the end of february) and my friend (same car older than 2 months) had same problem one week later.
Any solutions ?
Take it to the dealer, thats why they have a warranty
The owner obviously had already visited the workshop, I would not expect him replacing the air pump himself.
It might well be that someone has had the same issue and had a dealer who was able to figure out the real problem. It would then be useful to spread that info for others who may have the same issue. They can then make their dealer learn how to fix it. In one way or another we very often need to advice our dealers, MB may give them the necessary info too but they don't have time (or are too lazy) to get familiar with all the stuff.