Thanks for the information dd5087. I have heard of this previously, but I think maybe Damon wised up in '07. The '06 compartment (couldn't upload my picture ) doesn't have any visible openings, and houses a number of fuses. The panel is clearly sealed. Will leave it to the mechanic. I also hear that jacking up the rear tires and getting underneath accesses the canister. Might explain why the total cost of replacement is usually double the air filter cost alone. Thanks all for the feedback. Great as always.