Section 17 (A/C System General Servicing)
WARNING: This page is about a different car, the 1997 Mercedes-Benz E420, 1997 Mercedes-Benz E320, 1997 Mercedes-Benz E300, 1997 Mercedes-Benz C280, and 1997 Mercedes-Benz C230. However, it is still accessible from the selected car via links, so may be relevant.