Door cracking issue

[DocDee]

The entry door on our 20163401RL has some large cracks across the interior panel. I think the cause was uv light, as we often leave the door open on sunny days. Is there any way I can find just that panel? Looks like just a few screws hold it in place. Dealer tells me that I have to buy an entire new door. And, of course, the exterior paint and decals would have to be matched.
Any ideas would be helpful.
Thanks.

[r time soon]

Dealer may be correct on this one. If the door is constructed like sidewalls are, laminated and pressed together under vacuum, glued together, it might not be as simple as replacing the interior skin. Might be near impossible to remove without tearing the entire door to pieces. I would contact Lippert, the door manufacturer, at 574-537-8900 and see what they can offer. They might not be able to provide anything except the entire door. Which would need to be the correct color of gel coat and the required decals or stripes installed. Give them a call. Have the information from your door tag handy as you will need it. Date of manufacture, model, size etc..

[travelin' texans]

My suggestion would be remove the peep hole to see what the layers may be. On my previous Big Country the door inside was a thin sheet of aluminum covering about 2" of styrofoam.
If it has screws inside remove them to see what's there. Home improvement stores sell FRP, fiber reinforced panels, that come in colors that could work as replacement.
Most dealers don't repair anything, faster, easier, less knowledge required to just replace.