Technique, The charcoa filters are under the passenger side dash and can be reached by removing the underneat cover. It is pretty simple from there, and they are (two of them) pulled down to remove after the covers are removed. You cannot clean them. However, if what you say is so, I wouldn't replace them either, since I did not. Cost is about 165+ and not worth it. Unfortunately you cannot tell if a charcoal filter is full of smells or not, except if it does not work. Therefore I left mine in as they are still working. Since they are not main line, they will not obstruct the flow of air unless turned on when they are full. However, WTHDIK. See the comment of Gilleybenztech. I will send you a copy of the manual for this. I will need your email since it won't attach. Regards, Harvey

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