Hello guy's How are to all
thanks for you and to this forum to help and guided me to buy my car
1997 E320 sedan
but i dont find the owner manual so i need your guys to explain the function of this button in picture below
Thanks.

moved for better answer.

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As a former owner of a '97 E320 (now a '06 E350) here goes:

First button is for the cabin air filter. When you press the button, outside air is passed through an activated carbon filter. Supposed to get rid of bad smells (like a dead skunk).

If you leave it on all the time you will have to replace the cabin filter more often. I rarely used the button so I don't even know where the filter is.

P.S. - the AC comressor would come on when the cabin air filter was in use so it will also affect your mileage.

The second "W/S" switch is for winter/summer mode for the transmission. Winter mode starts out in second gear to reduce wheel spin. Only used it on snow covered roads.

The third "knob" is not a knob. It's some sort of sensor.

Lou

The third knob is the sensor for the infared remote key.

Thanks

There's more to "W" than just 2nd gear start. It does 4 things: Second gear start, earlier shift points, higher reverse gear ratio, and prevents roll-back on steep hills("hill-hold"). You can use either "W" or "S" at any time or all the time. My main use for "W" is the hill-hold feature when driving in SF. It works great
Dan

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