Question

Read the procedural document.

Under normal use, a vehicle’s cabin air filter should be replaced every 8–12 months. Replacing the cabin air filter is a minor task, taking only a few minutes, but skipping it altogether is bad for your health. It can even reduce the life of your vehicle’s air-conditioning system.

To change your vehicle’s cabin air filter, follow these simple steps:

1. Open the glove box. Remove the screw and slide the hook out as shown.

2. Push in each side of the glove box to disconnect it.

3. Remove the filter case by holding both sides.

4. Remove the filter from the filter case.

5. Inspect the filter surface.

If the filter is just moderately dusty, you can clean it by blowing compressed air from the reverse side. Do not wash or oil the filter.

If the filter is dirty, it should be replaced.



Which revision would most make this document more helpful to someone replacing a cabin air filter?

labels indicating where a glove box and filter are located in a car
a list of the materials needed for changing a cabin air filter
a photo or graphic indicating what clean and dirty air filters look like
recommendations for where to purchase inexpensive cabin air filters

Answer 1

a photo or graphic indicating what clean and dirty air filters look like

Reason: the procedure tells you to inspect the filter and decide whether to blow it out or replace it — visual examples make that judgment far easier and reduce the chance of keeping a filter that’s actually too dirty.