Mercedes-Benz 2000 C-Class - Manual (Page 113)

Manual Release of Fuel
Filler Flap
The manual release knob is located behind the right side trunk panel and felt pad.
In case the central locking system does not release the fuel filler flap, pull the manual
release knob while simultaneously opening the fuel filler flap.
Roof Rack
Use only those roof racks approved by Mercedes-Benz to avoid damage to the vehicle.
Follow manufacturer's installation instructions.
Mount supports only between markings on border of roof which
are visible when doors are opened.