Where is the secondary air pump relay on a 2006 Mercedes cls 55 amg?

The secondary air pump relay on a 2006 Mercedes CLS 55 AMG is typically located in the engine compartment fuse box. You can find the fuse box near the driver's side, near the battery. The specific relay for the secondary air pump may be labeled in the fuse box cover, so it's advisable to consult the owner's manual for exact identification. If you're unsure, checking online forums or service manuals specific to the CLS 55 AMG can also provide guidance.