Firstly, undo the clip to release the MAF sensor plug
Undo the circular clip on the air intake, use a 7mm socket
Now release the air intake
Undo the 4 Torx-25 retaining fixings
View of the air filter cover
Clean off any debris on the surface of the filter. Replace with new filter if heavily contaminated
Check air filter box for debris. Clean if required. Replace the air filter
Reassemble the air filter housing