The paint warranty is only for 2 things.
Physical damage doesnt come into it.
One is for the colour staying true, ,no laquer peel and so on in normal conditions.
The other /12 year thing is no corrosion/lifting from below.
Theyre really just ,if you park the car all year round in a atmospherically controlled temp garage ,wi no road salts/condensation etc ,you could be good for 12 years
Anything else forget it.Any accident damage,no matter how well its repaired,,bye.
Stone chips/underbody physical penetration/wheelarch wear n tear ..bye.
You also have to have a renault paint check at least once a year to maintain even the 3-4 year guarantee.