Now you confuse me ! There are two filters, Pollen Cabin filter and Charcoal filter. Im not sure about charcoal filter cause I dont have the button to activate the charcoal. But really bad smell when switch on the air cond . Car is year 2000 model , round headlights. Is this locally manufactured or China ? TQ
Sorry if i have confused you. Basically there are a few variety of filters i.e.
1. Standard (white paper/cotton/nylon) - just for filtering
2. Nano (blue paper) - treated with chemicals for anti-bacterial effect. Nano filter will prevent the build-up of bacteria which causes odor.
3. Charcoal/carbon - (grey paper/cotton) - eliminates foul odor.
What we have for W210 is only the Nano and Charcoal type. There's no need for any buttons to activate the charcoal filter.
All W210 models are with round headlights but unfortunately there are 2 versions of filter (rectangle and square shape) and I can't be sure which fits your model eventhough you mentioned year 2000.
Item is imported from Taiwan and not locally made.