First - take out the two screws at the bottom of the rear seat cover. Once these are out the cover snaps out down down.
Inside the seat back, there are two controllers, one is right there with the multi-colored small hose, the other is tucked down behind where you see the air filter in this image. You will see that a black hose and a blue hose are bound together with some black cloth/tape material. You want to disconnect both of those hoses from their end points. The blue has one (on mine, the far bottom of the top unit). The black has two end points with a junction that happens after the filter...DO NOT CUT or remove the ends of the lines after the filter (they will be re-used as is). With a small tip awl it is very easy to release the hose connection from the fittings. Once the fittings are out, feed the hoses (and filter) out towards the floor of the car.
You can see on the lower section of the filter the two connections - again, do not remove this from the filter. You will be removing the other side of the filters hose.
When you have the rear set - look under the front of the car. You can see the hoses come up the exterior side of the seat, around the pivot of the seat and to a zip tie that is accessible (to cut) from the side edge of the seat. You have to push the leather back a tad, it is there...
Under the front of the seat (put the seat all the way up and back) there is one more zip tie on the side rail on the exterior of the seat, one in the front. Use the small point to remove the blue hose from its connection, and the black hose from its connection - NOT ruining the U shaped portion of the hose.
Now, tape two pieces of hose to the old hose. I mark the "black" hose by wrapping some electrical tape on the "black hose" so I do not get confused as to what one is what. Pull the hose from under the seat to the seat pivot, then from the pivot to the rear of the car - slide the seat back forward.
Now, you can use a heat gun to SLIGHTLY warm the fittings and use a blade to cut of the remainder (be VERY careful to not melt or damage the fittings). You can see in this image I my hose marked with black tape connected to the filter....where the black hose goes...I never removed the fittings on the rest of the hose as there is no need to. Slide the filter back into position and plug it back into both connectors. Do the same with the blue.
Size the hose at the front of the seat, setup the connectors and plug them in. Tuck the hose into the pivot area of the seat to keep the blue out of sight, put the rear cover back onto the seat and get a massage!!!
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