Fuse for heated rear window on V Class.

Hi folks,
Does anyone know where the fuse or circuit breaker for the heater element of the rear window on a V class is located and what fuse number it is. I can't
find a reference to it in the handbook.
The switch is not a simple off/on does anyone know how it works or where any other associated relays or control circuitry is located. Can anyone recommend a workshop manual for these vehicles
Many thanks
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
Add image file

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.