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Toyota Yaris Engine Air Filter Replacement Guide
How to change the engine air filter element in a 3rd generation 2012 to 2016 Toyota Yaris with the 1NZ-FE 1.5L I4.

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2015 Yaris 1NZ-FE 1.5L
Pull Back Metal Latch
Release 2nd Metal Latch
This automotive maintenance tutorial was specifically written to assist owners of the third generation 2012, 2013, 2014, 2015 and 2016 Toyota Yaris in checking or changing a blown fuse or a faulty relay in either of the two engine bay electrical panels.

Owners of other Toyota, Lexus or Scion vehicles such as the Corolla, Matrix, Prius, Camry, RAV4, Sienna, Tacoma, Tundra, FJ Cruiser, Venza, Highlander, Avalon, Sequoia, Land Cruiser, IS 250, ES 350, GS 350, tC, xB, xD, iQ and FR-S may also find these DIY instructions to be helpful.

A few compatible replacement engine air filter elements with their part numbers include the following: Fram CA10190, Toyota 17801-21050, Toyota 17801-YZZ05Wix 49104, ACDelco A3103C, EPAuto # FP-004-1 and K&N 33-2360.

No tools are needed to access and replace the engine air filter.

Lift Open Air Box Cover
Remove Old Air Filter
Old Engine Filter Removed
The first two steps are to open the hood and then move to the right (driver) side of the engine bay.

The engine air box is located just behind the driver side headlight assembly and in front of the 12V automotive battery.

Locate the two silver metal latches on the right side of the air box.

Release the two latches by flipping them away from the air box cover.

The front latch will swing towards the left side of the car and the rear latch will swing towards the right side of the car.

Gently lift the top half of the air box to access the old filter.

Pull the old engine filter straight out of the lower half of the air box.

Inspect Both Sides
Clean With Vacuum
Remove Debris - Air Box
Inspect both sides of the old air filter.

If the old filter is dark grey or black and clogged with dirt, dust, soot, pollen, leaves, insects, twigs, hair and other debris, it should be replaced with a new element.

I recommend buying the Fram CA10190 engine air filter since it has excellent reviews on Amazon.

If you prefer to have an OEM filter, the part numbers are as follows: Toyota 17801-21050 and Toyota 17801-YZZ05.

If the old filter is relatively clean, just tap out the large debris and remove any fine dust with a vacuum cleaner.

Clean out any sand or debris in the bottom half of the air box.


Install New Air filter
Line Up Tabs & Slots
Close Air Box Cover
The new air filter has three rounded edges and one 90 degree angle corner.

Lower the new filter in to the bottom half of the air box with the 90 degree angle corner situated at the left rear of the air box.

Line up the top half of the air box and lower it down in to place over the bottom half.

Slide the two tabs on the left side of the air box cover in to their corresponding slots.

Flip Up Metal Latch
Secure Second Fastener
Engine Air Filter Replaced
Flip the two metal latches up over the top half of the air box cover to secure it in place.

Double check that the two halves of the air box are flush together with no part of the filter visible.

Be sure to record the engine air filter change in your vehicle's service records.

For more, check out all of my 2012-2016 Toyota Yaris DIY Repair & Maintenance Guides.

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