HFL Does Not Work Properly

Diagnostic Procedure

• Do the HFT-Mic  in the System Diagnostic Mode

Also Check for

• Software not up to date
• Checking Cell Phone Compatibility 
• Most Bus Diagnostics Mode

  Refer to:

  Audio and Visual System Most Bus Diagnostics Mode (2019 2020 2021) 

  or

  Audio and Visual System Most Bus Diagnostics Mode (2022 2023)