[ours2012]

kav69, Fill your garage in, we need to know engine year petrol diesel.
Too many variants of Scenic

 

[ours2012]

Sorry Kav, what is your problem, just one side light bulb not working.
Or front and rear side lights not working, any thing else..

 

[ours2012]

Now I am confused, whats a off side position light,, ? Is that not a tail light.?,
Fuse 1 and Fuse 2. in the underbonnet fuse box...
These are the only power supplies to the rear lights....

 

[ours2012]

Hopefully some one will explain where your fuse box is, with pictures.
Open the bonnet, the fuse box is on the passenger side, and slightly obscured by the top of the outer wing,

Renault Megane II & Scenic II Fuse Box Cover New Genuine 8200294203 | eBay


renault scenic 00-08 1.5dci fuse box cover lid 8200438360 | eBay

RENAULT MEGANE / SCENIC 03-08 2.0 16v ENGINE BAY FUSE BOX / USM / 8200455424-F | eBay

Bottom link is what your fuse box looks like.
Top links are covers that go over it..

 

[ours2012]

I can usually save them, and open in paint and mark them. But these are too small to adjust with clarity, thats why I showed you the two covers that could be fitted to yours.
I never know where fuse boxes are fitted on any car, but all fuse boxes under the bonnet has to be fed from the battery.
So its easy, (if the battery can be seen under the bonnet.) Find the main red wire off the positive terminal of the battery, and follow it .
You will find your fuse box..

 

[ours2012]

So you have tested the fuses at this point marked in red.

 

[ours2012]

Your under bonnet fuse box is under the cover, not on the side, ,
Take the battery off, remove the cover its there.. the fuse box needs to come out to work on it, ..