OH ------- MY ----------- GOD.............. you guys dont read the posts enough... I have been fighting over that rust for over a year. I have posted a few times about this.

If you dare to lie down and look under the plastic side skirts on the actual rocker panel, you will come out crying. the rust starts under there and when it creeps up the A-post it means it is getting ugly.

This is an absolute common area for rust on any xtype that has actually been driven in snow. ( ummmmmmmm duuuuuuuuuuh it is an awd car.. why else would you even buy one? lol )

Jag Canada has been totally avoiding dealing with the issue, driving any customer to fits of rage if they try to bring up the issue.

I have seen pictures of some cars that took $10,000 dollars of body shop work to fix them.

the entire car is well protected EXCEPT for the rockers. Not only is it a dumb design for rust, there is no corrosion protection there at all.

It will be the path that all X-types will end up in the scrapyard because Jag is unwilling to fix it.
If you get it claimed under surface rust they might get it sandblasted and re-sprayed, but they will never go inside the rocker where the rust started and is way worse. If they do the cosmetic repair then it will never reach the perforation level by the end of that warranty. If you let it go till the last year of perforation warranty, they will do everything in their power to avoid fixing it.

there is ZERO protection inside the rocker, it is a welded closed section before the car is painted. there is just some basic primer on the inside metal before the car is welded together.
on the outside there is primer, paint, clearcoat and maybe some other layers of protection in various places. then there are holes pierced in the rocker to attach the side skirts and that lets the area fill with salt water all winter long.

I will post my long long story about this whole thing soon.. I am waiting for the final chapter to close.

 

If it were me, and your rockers are in decent shape I would do the following... Probably best to wait till summer or have several days of heated garage access.

get down on your hands and knees or whatever and find there are some biggish access holes - about an inch in diameter on each side, one half way along the rocker, one at the rear. To do the job properly you need to remove the side skirts as there are many holes for the clips that are likely starting to rust around the holes.

Flood the big holes with water use full flow of garden hose and flush flush flush whatever salt etc.. is in there, there are rocker drain holes all along the bottom seam, you will see water running out all over the place.

once you are quite confident the inside is salt free...you need to dry it in there, that will be days of hot baking sun, no rain, etc... I dont think one day of drying is enough to get it dry in there.

meanwhile you need to find the right corrosion protection. I think a wax based product is the best final coat inside. Ask around, I dont think rust-check will be any good there and FOR SURE no oil spray. Since this is a closed area, you need good protection. I really think that a high end body shop has the best products. not the quick and dirty rust shops. There may be some rocker guard paint that a good body shop can spray in with a long wand, this stuff could be either the stuff that dries hard or remains sorta soft.
Once that is dried I would then get some wax undercoating sprayed in the same way.
Some how through all this you need to make sure the small drain holes are kept clear, maybe insert a mcdonalds drinking straw into each hole before you spray the stuff in there. then pull them out when you are done.

get the idea? you want it protected, you need to do it right, anything else will only buy a few months of protection.

 

keep in mind that the Jaguar owners manual clearly states that if you do anything to rust protect your car it VOIDs the warranty.

they are afraid that some of the oils or sprays have solvents in them that will melt wax type undercoating... THat makes good sense, and the Jag seems well protected almost everywhere.

But for them to say you cant do anything, and then not put a drop of protection inside the rockers is ****ing retarded. If I was a lawyer I would launch a class action lawsuit over this one. It is a clear defect in manufacturing.

the rocker area has rusted from the time of horse and buggies, to have a welded closed section with all kinds of pierced holes.... and NO PROTECTION is criminal ... lol