Making this post as there is not really any posts on how to do this.

This will apply to a lot of Infiniti / Nissan Cars as they have a similar or identical setup to this.

I tried doing this from underneath the car and it is impossible to find the drain tube from underneath, plus even if you do, you will be wasting the extended length tube trying to snake it around.

You will need to remove the passenger side inner sill, lower dash panel, plastic BCM trim cover, and pull the carpet and insulation back to the left.





The drain tube will be in the floor, It will require a small amount of force to pull out, but once it is out, wipe down the outside of the hose with a cleaner as their will be dirt all over it.

Then take Klima Cleaner Pro, shake the can well. Use the extended length tube and feed the tube all the way into the drain tube. Then attach the top white cap (extend length tube attachment) to the can and dispense around 3/4 of the can or so. You will hear the foam expanding inside the system. Then quickly reinsert the drain tube back into the floor fully. Have some paper towels or towels handy as the product will drip from the tube.

Wait 20 minutes, then go back and dispense the remainder of the can into the drain tube. Then wait 20 minutes for product to drain. Once 20 minutes is up, start the car and put the AC on fresh air, all vents with fans set to high and lowest temperature. Run for 2 minutes with the windows down.

The evaporator has been cleaned and you are all set. Can air out the car for longer if wanted.

Can use another product besides NextZett Klima Cleaner Pro, but NextZett makes fairly good products and this is one of them.