Had the same on my 5th gen. In my case, the lower door panels started rusting from the inside out due to water and salt sitting inside the door seam and not being able to drain properly as well as not enough wax sprayed into the seam.

At first it is bubbles, eventually it will show its ugly face. Painting the hood will last longer when done correctly. The doors though will come back because there is no way to remove or inactivate all the corrosion in the seam.

I did both 4 years ago, hood is still fine, rust on doors came back and I just redid it this year.

 

Had the same on my 5th gen. In my case, the lower door panels started rusting from the inside out due to water and salt sitting inside the door seam and not being able to drain properly as well as not enough wax sprayed into the seam.

At first it is bubbles, eventually it will show its ugly face. Painting the hood will last longer when done correctly. The doors though will come back because there is no way to remove or inactivate all the corrosion in the seam.

I did both 4 years ago, hood is still fine, rust on doors came back and I just redid it this year.

View attachment 86648

 

I have no rust at all, just the bubbling and the paint falling off.

 

Upload a photo.

 

 

Guess whats below and causing the paint to bubble.

You have these options:

• Go to a dealership and see if they can open an out of warranty, warranty claim or find a recall on this issue. Chances are low.
• Ignore it and keep driving. The corrosion will spread and break through eventually.
• Remove the corrosion and paint just that area. Will look ugly but stop the corrosion, at least for a while. It will bubble in other places eventually.
• Have the corrosion removed and paint / blend in the lower panels of the door.
• Have the corrosion and all paint on the door entirely removed, and paint the entire door. Best option and should prevent any future bubbling.

My minivan is a 2011 and I only paid 3 grand for it, 4 years ago. So I was not willing to pay for a proper paint job. It would be like putting lipstick on a pig. Hence why I did only the lower panels, and why I did it myself with rattle cans. Cost me half a day and maybe 80 bucks in paint, primer, sandpaper, corrosion deactivator.

Your van is likely in newer condition, so having the doors repainted by a body shop may be worth it to you. Don't pick the cheapest shop or the paint comes flying off with the first pressure washer wash.