MAP Disc cannot be Inserted

WARNING: This page is about a different car, the 2006 Lexus IS 350 and 2006 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.

CHECK MAP DISC
1. Check that the map disc is not deformed or cracked.
  OK: No deformations or cracks on the map disc.
  
  Fig 1: Ensure Map Disc Is Not Cracked Or Deformed
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE MAP DISC

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE