Warranty

I own a Toyota Land Cruiser model 2008 Chasses number JTEAU29J680003721
A month a go I have noticed that the color of the right side panel has faded and changed its hue. Only this part has changed color and the color of the rest of the car has not changed at all.
The Israeli dealer has checked the part and found no signs of any injury or impact to the part. The color faded evenly across the surface.
I own the car for two year and have drove it for 35, 000 Km. The car had gone through all scheduled maintenance at an authorized service garage.
I do think that all evidence support that there is a fault in the manufacturing process of this part and the warranty should cover the cost of replacing the defected parts.
The Israeli dealer refused so far to take any responsibility. I would like your intervention and investigation of this issue.

Best regards,
Ami Gur