Dust and Pollen Filter Element, Removing and Installing

Dust And Pollen Filter, Removing And Installing

NOTE:
The dust and pollen filter consists of two identical filter elements. Pay attention to correct installation position when installing (direction of flow is marked with arrows).
Clean plenum chamber after replacing dust and pollen filter. Pay particular attention to area beneath air intake unit.
Clean dust and pollen filter installation duct in air conditioner before installing new filter.

There are different versions of the dust and pollen filter and both filters have a different air resistance. Use the correct version. The control curve for controlling fresh air fan -V2- in the control and display unit, the Climatronic Control Module -J255-, is adapted accordingly.
- The filter insert without activated charcoal insert (AKF filter insert) is installed on vehicles with an operating and display unit, Climatronic Control Module -J255- "base" version. No Air Quality Sensors -G238- are installed in these vehicles.
- The filter insert with activated charcoal insert (AKF filter insert) is installed on vehicles with an operating and display unit, Climatronic Control Module -J255- "comfort" version. Air Quality Sensors -G238- are installed in these vehicles.

Removing






NOTE: Depending on vehicle equipment, it may be necessary on certain versions (with certain special features, such as taxis or police cars), to remove the glove compartment (eventually, certain other additional control modules installed in this area will have to be removed).

- Remove lid -A- from lower glove compartment cover -B-.

NOTE: The lid -A- is held by 4 latches on bottom glove compartment cover -B-. These latches may be difficult to release. Therefore, be careful that you do not damage the bottom glove compartment cover -B- when removal.

- Cover passenger-side floor mat in air under air conditioning unit duct for dust and pollen filter with paper.






- Loosen catches -B- and remove dust and pollen filter cover -A- from air conditioning unit.
- Remove first part of dust and pollen filter -A- from air conditioning unit.






NOTE: Two identical filter elements are installed one on top pf the other in the air conditioning unit.

- Reach into slot of Heating and A/C unit - C - and pull second section of dust and pollen filter - B - downwards (at tab) and then out of air conditioner slot.

Installing






- Clean air conditioning unit installation duct -C- for dust and pollen filter for leaves, dust and other contaminents with a commercially available vacuum and suction nozzle with brush -VAS 6288-

NOTE: Dust and other contamination can adhere to the air conditioning unit. A brush is attached to Suction Nozzle -VAS 6288- to remove these contaminants

- Place first part -B- of dust and pollen filter in air conditioning unit duct -C- and slide into upper installation position. Observe flow-through direction (arrows on filter -D- point to evaporator).
- Hold the first installed part of the dust and pollen filter -B- in upper installation position if necessary, for example, with a steel ruler
- Slide second part of dust and pollen filter -A- (under first part installed -B-) into slot of air conditioning unit duct. Observe flow-through direction (arrows on filter -D- point to evaporator).





- Check seal position -C- in groove -D-.
- Install cover -A-. Ensure proper seating in mount -E- and latch -B-.
- Install remaining components removed in reverse order.