I'm looking for the return air intake. I need to spray some Wurth A/C & Heating System Treatment into it. Does anybody know where it is on the Z? On the directions it states to look under the passanger side, but I cannot seem to find anything under that looks like a vent. The only thing I see are the vents where the air comes out from when you set it to come out from the bottom.

Did not know if this was the right section.

 

not sure about the z but most fords have the intake underneath the glove box compartment. get a light and lay on your back and take a look.

some cars you might have to drop the glove box to get access to the recirc door.

you'll have to put it in recirc mode when you do find the door to spray the stuff inside.

if you're doing this for odor, i don't think the spray is going to help much. odor's usually caused by moisture in the HVAC case or evaporator core. you can blow out the moisture by turning off the a/c 5-10 minutes before you get to your destination and turning up your blower speed. this gets rid of the condensation on your evap core.