where is the air pump relay located on 2002 s500 mercedes?

Hello,

The air suspension relay is located under the hood on the right side here's a guide to help test when you find it from our diagram (below)

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (Below) it looks blank but its not!

Please let us know what happens.

Cheers, Ken