Do you guys remember the scene where Megan Fox was leaning on the car hood on the movie Transformers? Of course you do. Now imagine how that scene would play out if Megan finishes the job and closes the hood, so far so good? What if the hood fails and completely bounces back, giving Megan an amazing uppercut? Still good because it's Megan, right? But most of us aren't Megan, and the uppercut can prove to be costly for our image and ego. Problems with the car hood are commonly experienced by car owners so there's a lot of know-how as to what causes them and how you can solve them, some of which are listed here.
The basic concern for car hoods is the latching. A faulty latch assembly would prevent your Toyota Sienna hood from closing completely, which causes noise and shakes every time you drive your car. Having this problem serviced is not exactly cheap so it's better to troubleshoot it yourself. In most cases, worn out parts and a loose cable are the causes for a bad latch. If you have a relatively old car, the parts of the hood assembly are likely rusted or worn out. This is unavoidable since the opening/closing of the hood and the constant shakes of your car are enough to roughen up the parts.
However, there are times when the problem isn't exactly in the hood assembly, which brings us to the case of the loose cable. If you take a look at the latch lever, there should a tiny wire loop in it. There is a chance that this part got disconnected or was loosened.
And where there is metal, there is bound to be rust. Most car hoods are made of metal (or at least made mostly of metal) so rusting is something that cannot be avoided. Premature rusting, however, is a different case. A good paint job and coating usually last a couple of years; seeing rust earlier than that would mean that the paint job was poorly done. Minor scratches or dents can also cause a faster buildup of rust.