Audio-Navigation Unit and HDD Service Precautions

Contrary to previous generations of navigation units, the audio-navigation unit and the HDD cannot be substituted separately. You can substitute a combined audio-navigation unit and HDD with a known-good combined audio-navigation unit and HDD. When the audio-navigation unit and HDD are connected to a vehicle, and powered up for the first time, the audio-navigation unit and HDD go through a mating process where the HDD writes the audio-navigation unit's serial number to its memory. The audio-navigation unit and HDD are available separately.

When you get a replacement audio-navigation unit, the unit arrives able to mate one time to a HDD. When you connect the audio-navigation unit to the HDD and power it up for the first time, the two components are mated. Once the audio-navigation unit is mated, it does not accept an HDD that is already mated to another audio-navigation unit. It does accept a new HDD.

The HDD is removable from the audio-navigation unit. If the audio-navigation unit is replaced, install the original HDD into the new audio-navigation unit. When you transfer the HDD, all the client's settings, music, and photographs are transferred.

The HDD is able to mate more than once, allowing you to transfer the HDD with the client's information to a new audio-navigation unit. The HDD must mate to a new audio-navigation unit. It cannot mate to an audio-navigation unit that has been mated to another HDD.

If you need to replace the HDD, there is no way to transfer client data, music, or pictures to a new HDD. Explain to your client that their music and personal information is not transferable. The navigation system has the save users memory function available, but Acura does not recommend using it. If the HDD is OK, install it in the new audio-navigation unit and it will automatically transfer all the client's information and settings.

If you need to replace the HDD, you can try to back-up the navigation data (if possible) and transfer it to the new HDD. See the Save Users Memory - Refer to: Navigation System Diagnostic Mode (2015-17),  or Navigation System Diagnostic Mode (2018-19) . The save users memory function only copies client settings and phone information. There is no way to copy or transfer music and photographs that are saved on the HDD to a new HDD. Explain to your client that this information is not transferable and will be lost.

• When the battery is disconnected, the internal GPS clock resets to 0: 00. The internal clock resets to the correct time after the system finishes GPS initialization.
• Before disconnecting the battery, make sure you have the anti-theft code for the navigation system. Also obtain any PGM-FI or A/T DTCs and freeze frame data (which are lost when the PCM loses power).
• After reconnecting the battery, you have to wait to get the initial signal from the satellite. It will take from 5 to 45 minutes.
• Adjust the setup clock settings (time zone and daylight savings) in the navigation system.
• Before returning the vehicle to the client, enter the anti-theft code for the navigation system.
• Transfer any discs that were removed.