Audio-Navigation Unit and HDD Replacement Troubleshooting
To protect client information and data from theft, the audio-navigation unit and the HDD have a passcode that prevents the HDD from being accessed by any audio-navigation unit. When the HDD is first installed in an audio-navigation unit, and the ignition switch to ON (II), the HDD writes the passcode from the audio-navigation unit to its memory, which is also known as mating. Every time the ignition switch to ON (II), the audio-navigation unit and HDD confirm the passcode against the other component. If the audio-navigation unit has a different passcode than the HDD, the audio-navigation unit cannot access the HDD.
When you order a new audio-navigation unit, it arrives able to mate one time to a new or previously mated HDD. When you mate the two components, the new audio-navigation unit overwrites the HDD's original passcode with the new one. If you try to install the HDD back into the original audio-navigation unit, the passcode is different, and the audio-navigation unit cannot mate to the HDD.
When you order a new HDD, it arrives able to mate to a new or a previously mated audio-navigation unit. Once the HDD is mated, it then can only mate with a new audio-navigation unit.
For more information, refer to AUDIO-NAVIGATION UNIT AND HDD SERVICE PRECAUTIONS . The outline of the audio-navigation unit and the HDD replacement and substitution is shown in the following table.
- Original units are known-good units that have been mated at least one time, and new units have never been mated.
- You can substitute a mated audio-navigation unit and HDD into another vehicle, but you cannot substitute known-good components individually.
| Audio-Navigation unit | HDD | Result |
|---|---|---|
| New | New | OK |
| Original | New | OK |
| New | Original | OK |
| Original | A HDD mated to a different audio-navigation unit | NG |
| An audio-navigation unit mated to a different HDD | Original | NG |
| Question | Answer |
|---|---|
| Can you turn the ignition switch from ON (II) to LOCK (0) while the navigation system is updating? | Yes, when the ignition switch is turn to LOCK (0), and then back to ON (II), the updating procedure continues automatically from the point where it stopped. |
| How long does the update take? |
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| What is the difference between the two update modes? Can I use the audio system and the navigation system during the update? |
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| How many digits is the passcode, and what happens if 1 enter it incorrectly? | The pass code is 16 digits which you need to manually enter. You cannot use the voice commands. There is no limit to the number of times you can attempt to enter the passcode. |
| Can the update DVD be inserted at any time? | Yes, if the navigation screen has timed out, "OK" needs to be selected, then follow screen prompts. |
| Can the client see the navigation update progress? |
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| Can music be transferred from one HDD to another? | No. Music can only be ripped to a HDD. |
| Can music be recovered from a damaged HDD? | If the HDD is damaged, there is no way to recover music, data, or personal information. |
| When transferring the HDD to a new audio-navigation unit, are the client settings also transferred? | Yes. When the HDD is installed in a new unit, all the ripped music, client data and settings are automatically transferred with the HDD. |