The air filter is located on the passenger side of the car, in the engine compartment, next to the fender. You would first need to remove the intake tube from in front of the box. Then release the clasps that hold the air box cover in place. I've also included a video below in the "related links" section, that will show you exactly how to remove it. Hope this helps you out.
http://www.tobio.info/passat/howtos/passat_air_filter.html
http://www.tobio.info/passat/howtos/passat_air_filter.html
how to replace cabin air filter in 1999 Mercedes e320? how to replace cabin air filter in Mercedes e320?
A 1999 Dodge Caravan does not have a cabin filter.
http://www.tobio.info/passat/howtos/passat_air_filter.html
http://www.tobio.info/passat/howtos/passat_air_filter.html
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Click the link.
Click the link.
http://www.tobio.info/passat/howtos/passat_air_filter.html
It doesn't have one.
It's easy.Open the hood.Unlatch the air box.Pull out the old filter and put the new one in.