Hey there,

new to fitfreak. I recently noticed that the splash shield on my Gen 3 was all messed up. I have no idea how this happened because i do not recall ever hitting anything. Either way i plan on taking it in to the dealer, but while looking under the car i noticed a slight bit of rust on my crossmember / subframe (i think thats what its called) and was curious if this was any reason for concern?
When i touched it with my finger a bit of it flaked off. I have no idea how to tell of this is surface rust or rot?

 

Many had/have issues with those splash shields/undertray. Some go missing ... mysteriously.

I have spot rust in many places under my 2015's body. I always do a wd40 spray every half year or so ... or every oil change.... seems to keep things under control ... but I still have rust. Once it starts forming ... does not go away lol.

 

is that white crud salt? u need to wash your undercarriage without the lower shroud.

also that level of rust is pretty normal. just use a wire brush, clean it and spray some Duplicolor matte black engine enamel. thing does not need primer from experience and it sticks very well.

 

I would use a wire brush or fine emery cloth to clean it off, wash the dust off and then use some "rust converter primer" (various brands), let it dry good then use some automotive flat black paint to top it off.

 

I live in the salt belt. Mine is worse.

 

Good advice. I noticed some light corrosion on my Gen2's underside and worked the same solution as you suggested. It looks good and the corrosion has not reappeared.