Installation [04/2013 - 08/2015]: Procedure

WARNING: This page is about a different car, the 2015 Lexus IS 250 and 2014 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

INSTALL PCV VALVE (VENTILATION VALVE SUB-ASSEMBLY)
1. Apply adhesive to 2 or 3 threads of the PCV valve (ventilation valve sub-assembly).
  Adhesive
  
  Toyota Genuine Adhesive 1324, Three Bond 1324 or equivalent
2. Using a 19 mm deep socket wrench, install the PCV valve (ventilation valve sub-assembly) to the cylinder head cover sub-assembly LH.
  Torque: 27 N.m (275 kgf/cm, 20 ft.lbf)
  
  NOTE:
  Do not start the engine for at least 1 hour after installation.
3. Connect the ventilation hose assembly to the PCV valve (ventilation valve sub-assembly) and slide the clip to secure it.
INSTALL V-BANK COVER SUB-ASSEMBLY
Refer to PROCEDURE - Step 104