LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> IS 350 >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 (Navigation) >> Navigation System >> Cellular Phone cannot Send/Receive >> Inspection Procedure
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Inspection Procedure

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK BLUETOOTH SETTINGS 
    1. Check if the Bluetooth settings are correct

      OK: Bluetooth settings are correct. 

    NG: SET SETTINGS CORRECTLY 

    OK: Go to Next Step 

  2. CHECK CELLULAR PHONE 
    1. Check if the cellular phone is Bluetooth compatible

      HINT.

      Some versions of Bluetooth compatible cellular phones may not function.

      OK: The phone is Bluetooth compatible. 

    NG: END (ONLY A BLUETOOTH COMPATIBLE CELLULAR PHONE CAN BE USED) 

    OK: Go to Next Step 

  3. CHECK SETTINGS 
    1. Check if the cellular phone functions

      HINT.

      The cellular phone is unable to call under any of the following conditions

      • The cellular phone is locked
      • The directory is being transferred.
      • The line is crossed
      • Transmission is regulated
      • The power is off
      • The cellular phone is not connected to Bluetooth ("BT" is displayed while connected)

        OK: None of the above conditions exist. 

    NG: SET SETTINGS CORRECTLY 

    OK: Go to Next Step 

  4. CHECK CELLULAR PHONE 
    1. Check if the cellular phone can make a call

      HINT.

      When the battery is low, calls cannot be made or received

      OK: Cellular phone can make a call. 

    NG: REPAIR OR REPLACE CELLULAR PHONE 

    OK: Go to Next Step 

  5. CHECK RECEPTION 
    1. Set the cellular phone so that it can receive calls
    2. Place the cellular phone close to the multi-display
    3. Check if the cellular phone has reception according to the multi-display

      OK: Cellular phone has reception. 

    NG: REPLACE MULTI-DISPLAY  (See REMOVAL  )

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