Voice Recognition Difficulty

WARNING: This page is about a different car, the 2006 Lexus GS 430 and 2006 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.

CHECK CONDITION
1. Check if the system's voice recognition ability is low with one person's voice.
  OK : System's voice recognition ability is low with only one person's voice.
NG : SYSTEM'S VOICE RECOGNITION LEVEL VARIES DEPENDING ON VOICE AND PRONUNCIATION. THIS IS NOT A MALFUNCTION

OK : GO TO NEXT STEP
CHECK MAP DISC
1. Check that the map disc is not deformed or cracked.
  OK : No deformations or cracks on map disc.
NG : REPLACE MAP DISC

Fig 1: Ensure Map Disc Is Not Cracked Or Deformed
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : GO TO NEXT STEP
CHECK MAP DISC
1. Check for dirt on the map disc surface.
  OK : No dirt is on map disc surface.
  
  NOTE: Do not use a conventional record cleaner or antistatic preservative.
  
  HINT:
  
  If the disc is dirty, clean the disc by wiping the disc's surface radially with a soft cloth.
NG : CLEAN MAP DISC

Fig 2: Cleaning Disc
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : GO TO NEXT STEP
CHECK MICROPHONE (NAVIGATION CHECK MODE)
1. Enter the "Navigation Check" mode (see NAVIGATION CHECK MODE ).
2. Follow the directions on the screen. Check that the word recognition indicator is displayed in green for each item.
  OK : All check items are recognized.
NG : PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

Fig 3: Cleaning Disc
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : NORMAL OPERATION