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Corrosion under the hood?

79K views 300 replies 83 participants last post by  PaRtY_StArTeR  
#1 ·
Looking for some input. I noticed this after changing my oil yesterday. I know our hoods are aluminum, and it would make sense if steel was used in certain areas for rigidity and strength reinforcement. Problem is, to my knowledge, is that the two dissimilar metals can corrode if in constant contact with each other. I was looking at some things online, and I'm not sure what to call this, but it looks perhaps like galvanic corrosion? I live in AZ where it is generally very dry, but monsoon season is here in full force and it has been wet and very humid. What do you guys think?

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#2 ·
I'd like to know as well since I took delivery of mine with 30 miles on the clock, just like this... I cleaned it up and it comes back real quick... I thought it was water getting inside through the scoop and traveling inside the hood down to the loop...
 
#8 ·
UPDATE:

Finally had a chance to go to the dealership. Fortunately, the body shop guy who partners with the dealership was there, so he and the service rep were able to take a look at it together. I explained my theory - corrosion due to the two dissimilar metals somehow being in contact with each other, and the body shop guy agreed with me. He told the service rep it would need a hood replacement, not a re-spray since the corrosion is happening within the hood. The service rep took pictures and told me he would send them to Chrysler to see what they had to say, along with an estimate from the body shop. I should hear back in a few days.
 
#10 ·
Does the dealership plan on replacing the hood with the ordered replacement already factory painted or are they gonna have to paint it once it comes? Btw I just discovered this under my SP's hood as well.

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#14 ·
Wow, this will be another huge recall I bet. You could make a case that if the corrosion continues, the latch to detach from the hood, which would be pretty scary at highway speeds.
 
#15 ·
I never really paid attention to that area until I seen this thread and took a look. Now I'm annoyed as I have to deal with the dealership which is a huge headache. How could they actually fix that w/o replacing the whole hood?

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#17 ·
this is not cool. when i got mine, they didnt prep it so it was dirty and actually covered in what looked to be salt in many places where water typically goes; underhood, suspension, under the plastic skid plate under the car. assumed it was from transport from canada over the winter (its a feb build). hood latch area was pretty rough but i cleaned it up and it was like new. just went out and looked and while its not as bad as the pics in this thread, there is some bubbling under the paint. ugh. if the hood needs replacing, that means i need to have a section of my clear bra re-done so thats money out of my pocket...
 
#19 ·
A friend of mine that works for Ford said that the car frames are just sitting outside in the winter. He said to keep everything from freezing up and to keep a clear path for the forklifts the whole area is frosted with salt. I hope FCA didn't do that with our cars.

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#21 ·
Dealership called today. Chrysler is requesting more pictures -specifically, overall pictures of the entire hood so they can see that the hood hasn't been repainted since I've had the car. I have to go back down to the dealership on Tuesday so the pictures can be taken.
 
#24 ·
If they give you a new hood they can paint it and then call u when it's done and put it on in front of you.. I would want a new one just so you don't have to leave the car longer than a couple hours for there mistake ....


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#26 ·
If they give you a new hood they can paint it and then call u when it's done and put it on in front of you.. I would want a new one just so you don't have to leave the car longer than a couple hours for there mistake ....

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That's a good point. They'll probably want to keep the car to match the paint right though.

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#25 ·
That definitely looks like crap. This is a paint prep issue nothing more nothing less. My 2006 and a buddies 2005 are built the same way with the same materials. No corrosion and he drives year round in the winter salt dump..
 
#28 · (Edited)
If a lot of you SP are seeing this garbage, it's going to have to be a new hood. Someone should try to check this out with a scope. If the inside is corroded and they don't want to replace the hood' I'd want an extended warranty.
 
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#29 ·
Ugh, here is mine. The white that surrounds the striker and holes wipes off but within seconds comes back (I wiped the areas down prior to taking pictures). Possibly related to the issue?

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#34 ·
The white stuff is aluminium oxide (aluminium rust so to speak). Weak battery acid will clean it off. All of the Aluminiun panels and pieces are treated with an aluminium specific primer.
The brown is iron oxide or just plain old rust. The mild steel parts need to be treated differently.

One of the biggest problems with Aluminium is paint adhesion. If the surface and priming aren't perfect, the surface corrodes and the paint just peels off. Ford is having problems and have issued a 5 year guarantee on perforation and paint adhesion.
 
#38 · (Edited)
If they plan to hot dip the hood to remove all of the paint and primer and then reprime everything, that would work but would be more expensive than a new hood. I think you guys are going to have a battle on your hands. Like I said before, get an extended warranty for whatever they do including adhesion.
 
#40 ·
If they plan to hot dip the hood to remove all of the paint and primer and then reprime everything, that would work but would be more expensive than a new hood. I think you guys are going to have a battle on you hands. Like I said before, get an extended warranty for whatever they do including adhesion.
I thought it might possibly be a matter of repainting the underside of the hood only but this seems to be way more complex but maybe necessary. I bet they're going to try a quick fix just to shut us up.

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#46 ·
My theory would be that a new hood would have been prepped properly. I'm beginning to think that FCA knows about the problem and has corrected it on more recent production numbers.
 
#42 ·
It seems like my paint/corrosion issues are showing their ugly faces again. I'm new to Dodge and want to upgrade to a Hellcat in the next few years but all these problems (one mechanical) have me thinking again.


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